Active NPI 1841230976 Individual Practitioner Male Practitioner

Dr. William T. Ko , MD

Dermatology • Phoenix, AZ

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. William Ko, MD is a certified Dermatology practicing in Phoenix, AZ. With approximately 32 years of clinical experience since graduating from Northeastern Ohio University College Of Medicine in 1994, Dr. Ko delivers high-quality medical care to the local community at 2224 W NORTHERN AVE STE D300.

Dr. Ko is affiliated with Center For Dermatology Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include aminolevulinic acid hcl for topical administration, 10% gel, 10 mg, destruction of precancer skin growth, 2-14 growths, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2224 W Northern Ave Ste D300

Phoenix, AZ 85021

Telephone 6022771449

Fax 6022779984

Associated Practice Facility / Clinic

🏢 Arizona Skin And Laser Therapy Institute, Llc Facility NPI 1790732832

Medicare Profile & Education

Medical School

Northeastern Ohio University College Of Medicine

Graduation Year

1994

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Dermatology in Phoenix, AZ

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

32 Yrs +11.2 yrs vs City Avg

City Avg: 20.8 Yrs

State Avg: 18.6 Yrs

Regional Practice Density

75 Specialists

Practicing in Phoenix, AZ (369 Statewide)

Telehealth Adoption Rate

4.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

62.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Ko (32 Years) 32 Yrs

Phoenix Specialty Average (20.8 Years) 20.8 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7345 Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg	16,000	70	$3.10	$1.67
17003 Destruction of precancer skin growth, 2-14 growths	4,467	532	$15.00	$6.43
99213 Established patient office or other outpatient visit, typically 15 minutes	1,068	623	$197.00	$88.24
17000 Destruction of skin growth	1,065	589	$151.00	$45.48
11103 Biopsy of related skin growth, each additional growth	678	301	$113.00	$48.47
11102 Tangential biopsy of single skin lesion	660	442	$227.00	$91.88
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	302	214	$1516.00	$566.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	201	154	$277.00	$124.54
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	164	127	$1038.00	$229.76
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	155	119	$926.00	$398.27
17110 Destruction of up to 14 skin growths	140	129	$259.00	$107.31
17004 Destruction of precancer skin growth, 15 or more growths	105	84	$376.00	$162.07
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	92	77	$942.00	$240.78
96574 Application of light with debridement to destroy precancer skin growth	75	66	$640.00	$267.67
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	60	49	$399.00	$142.84
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	60	52	$1428.00	$613.31
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	53	50	$124.00	$54.83
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	45	34	$18.00	$0.97
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	43	42	$1670.00	$735.65
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	42	35	$457.00	$180.61
69100 Biopsy of ear	39	37	$213.00	$53.25
11900 Injection into skin growth, 1-7 growths	37	32	$128.00	$34.56
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	35	32	$431.00	$176.56
96405 Administration of chemotherapy into growth, 1-7	30	21	$189.00	$68.14
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	27	27	$883.00	$291.20
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	27	26	$421.00	$156.04
17273 Destruction of malignant growth (2.1 to 3.0 centimeters) of scalp, neck, hands, feet, or genitals	23	20	$465.00	$198.87
J9260 Injection, methotrexate sodium, 50 mg	21	14	$15.00	$2.65
13122 Complicated repair of wound of scalp, arms, or legs, each additional 5.0 cm or less	20	17	$276.00	$121.88
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks	19	17	$889.00	$381.88
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	18	18	$1681.00	$745.17
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	17	15	$385.00	$127.55
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	15	15	$545.00	$142.31
13152 Complicated repair of wound of eyelids, nose, ears, or lip, 2.6-7.5 cm	13	13	$1090.00	$240.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7345 Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg	19,800	88	$5.94	$1.63
17003 Destruction of precancer skin growth, 2-14 growths	4,639	574	$9.65	$6.47
99213 Established patient office or other outpatient visit, typically 15 minutes	1,168	698	$129.27	$87.51
17000 Destruction of skin growth	1,115	638	$95.83	$45.76
11102 Tangential biopsy of single skin lesion	715	476	$146.48	$93.25
11103 Biopsy of related skin growth, each additional growth	696	316	$72.98	$48.83
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	336	232	$959.77	$540.85
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	252	158	$573.14	$397.48
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	166	131	$687.61	$233.45
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	157	123	$187.03	$122.84
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	127	111	$78.56	$54.68
17110 Destruction of up to 14 skin growths	121	106	$160.58	$106.22
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	119	94	$616.47	$252.09
17004 Destruction of precancer skin growth, 15 or more growths	115	98	$244.80	$163.91
96574 Application of light with debridement to destroy precancer skin growth	91	82	$397.35	$271.96
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	57	56	$1024.56	$736.50
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	56	49	$953.62	$617.51
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	54	48	$265.37	$155.86
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	47	16	$342.02	$259.83
77401 Radiation treatment delivery, superficial	46	16	$51.96	$39.46
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks	41	33	$589.06	$382.25
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	35	32	$312.49	$170.37
69100 Biopsy of ear	33	32	$134.47	$58.32
13122 Complicated repair of wound of scalp, arms, or legs, each additional 5.0 cm or less	28	27	$189.83	$123.65
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	28	25	$324.20	$189.55
11900 Injection into skin growth, 1-7 growths	28	27	$78.39	$34.64
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	26	26	$577.46	$327.39
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	24	20	$4.15	$1.06
96405 Administration of chemotherapy into growth, 1-7	22	12	$123.51	$73.75
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	21	20	$347.25	$124.46
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	21	21	$1083.38	$744.95
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	20	17	$267.72	$178.13
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	17	16	$392.44	$135.50
14021 Tissue transfer repair of wound (10.1 to 30.0 sq centimeters) of the scalp, arms, and/or legs	12	12	$1304.53	$840.16
14041 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm	12	12	$1181.07	$893.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7345 Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg	23,000	94	$1.88	$1.56
17003 Destruction of precancer skin growth, 2-14 growths	3,563	522	$8.65	$6.61
99213 Established patient office or other outpatient visit, typically 15 minutes	1,177	690	$116.21	$88.75
17000 Destruction of skin growth	1,044	603	$86.19	$44.98
11102 Tangential biopsy of single skin lesion	759	507	$131.65	$93.03
11103 Biopsy of related skin growth, each additional growth	735	343	$65.70	$50.15
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	485	329	$861.24	$517.21
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	357	215	$524.03	$400.63
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	281	219	$164.16	$125.64
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	223	183	$610.30	$235.72
17110 Destruction of up to 14 skin growths	167	145	$145.39	$108.81
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	149	35	$341.89	$261.69
77401 Radiation treatment delivery, superficial	125	35	$52.16	$39.90
17004 Destruction of precancer skin growth, 15 or more growths	121	98	$216.44	$164.36
96574 Application of light with debridement to destroy precancer skin growth	115	94	$366.15	$278.31
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	110	99	$72.27	$55.16
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	86	76	$550.82	$283.99
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	62	58	$970.27	$742.75
69100 Biopsy of ear	60	58	$124.62	$52.44
14041 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm	58	53	$1177.05	$900.55
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	49	43	$515.15	$336.97
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	47	42	$248.40	$185.85
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	45	29	$1.50	$1.14
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	43	33	$808.70	$617.60
11900 Injection into skin growth, 1-7 growths	40	30	$72.81	$37.53
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	40	35	$229.63	$155.83
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	37	27	$264.28	$169.23
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	35	35	$981.79	$751.83
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	33	28	$242.80	$166.45
J9260 Injection, methotrexate sodium, 50 mg	30	15	$2.92	$2.22
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	29	29	$314.56	$120.21
96405 Administration of chemotherapy into growth, 1-7	28	13	$108.37	$66.46
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks	27	19	$501.38	$382.80
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	24	22	$358.22	$136.74
17273 Destruction of malignant growth (2.1 to 3.0 centimeters) of scalp, neck, hands, feet, or genitals	16	14	$268.57	$204.99
15260 Relocation of patient skin to nose, ears, eyelids, and/or lips (20 sq centimeters or less)	16	16	$1275.35	$974.35
14061 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.1-30.0 sq cm	15	15	$1267.64	$970.40
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	15	14	$231.61	$177.23
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	14	13	$222.26	$121.86
13122 Complicated repair of wound of scalp, arms, or legs, each additional 5.0 cm or less	13	13	$164.05	$125.19
14021 Tissue transfer repair of wound (10.1 to 30.0 sq centimeters) of the scalp, arms, and/or legs	12	12	$1107.68	$846.69
13131 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 1.1-2.5 cm	11	11	$502.31	$210.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7345 Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg	24,600	108	$1.88	$1.55
17003 Destruction of precancer skin growth, 2-14 growths	3,514	531	$8.29	$6.42
99213 Established patient office or other outpatient visit, typically 15 minutes	1,142	702	$116.89	$90.66
17000 Destruction of skin growth	1,005	606	$84.50	$44.82
11103 Biopsy of related skin growth, each additional growth	789	365	$67.59	$52.55
11102 Tangential biopsy of single skin lesion	777	528	$133.07	$96.86
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	456	304	$865.31	$520.66
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	307	254	$165.92	$129.06
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	299	188	$524.98	$408.75
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	296	151	$71.91	$55.78
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	274	56	$359.78	$280.04
77401 Radiation treatment delivery, superficial	237	56	$54.43	$42.32
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	205	155	$616.83	$244.67
17110 Destruction of up to 14 skin growths	141	128	$145.11	$112.01
17004 Destruction of precancer skin growth, 15 or more growths	141	117	$211.71	$163.78
96574 Application of light with debridement to destroy precancer skin growth	123	108	$368.45	$285.00
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	109	99	$558.26	$264.39
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	78	71	$970.15	$755.50
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	70	61	$811.61	$604.98
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	62	52	$228.68	$157.89
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	53	47	$247.53	$180.12
69100 Biopsy of ear	52	45	$127.08	$57.05
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	47	29	$1.66	$1.28
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	46	43	$521.57	$335.39
14041 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm	44	44	$1179.89	$919.43
11900 Injection into skin growth, 1-7 growths	40	31	$73.08	$42.82
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	36	35	$231.80	$180.61
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks	34	31	$501.70	$390.95
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	33	32	$983.69	$764.98
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	32	26	$241.86	$147.09
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	31	31	$361.21	$140.75
J9260 Injection, methotrexate sodium, 50 mg	26	16	$2.80	$2.16
17273 Destruction of malignant growth (2.1 to 3.0 centimeters) of scalp, neck, hands, feet, or genitals	23	21	$269.01	$191.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$143.55	$111.42
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	20	19	$222.02	$129.74
96405 Administration of chemotherapy into growth, 1-7	19	13	$109.27	$73.95
13122 Complicated repair of wound of scalp, arms, or legs, each additional 5.0 cm or less	18	17	$167.10	$130.25
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	17	13	$264.30	$181.73
15260 Relocation of patient skin to nose, ears, eyelids, and/or lips (20 sq centimeters or less)	15	15	$1277.90	$995.82
14061 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.1-30.0 sq cm	11	11	$1270.82	$990.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7345 Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg	8,000	40	$1.73	$1.44
17003 Destruction of precancer skin growth, 2-14 growths	3,662	531	$7.74	$5.98
99213 Established patient office or other outpatient visit, typically 15 minutes	1,029	615	$96.40	$74.65
17000 Destruction of skin growth	1,012	603	$84.20	$44.36
11102 Tangential biopsy of single skin lesion	818	550	$128.77	$93.11
11103 Biopsy of related skin growth, each additional growth	711	361	$68.58	$53.07
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	654	456	$140.01	$108.53
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	418	299	$857.24	$506.05
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	276	168	$513.57	$396.17
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	211	45	$354.94	$274.93
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	188	158	$618.31	$251.26
17110 Destruction of up to 14 skin growths	167	141	$143.72	$109.33
77401 Radiation treatment delivery, superficial	162	45	$31.06	$24.03
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	91	81	$556.45	$272.26
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	76	58	$58.29	$45.20
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	65	56	$227.96	$156.02
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	63	39	$1.93	$1.47
11900 Injection into skin growth, 1-7 growths	63	44	$71.57	$39.74
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	59	51	$803.16	$611.79
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	57	54	$981.72	$759.63
17004 Destruction of precancer skin growth, 15 or more growths	53	52	$203.72	$154.80
69100 Biopsy of ear	50	46	$126.74	$52.96
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	48	46	$518.46	$322.21
14041 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm	46	41	$1201.58	$920.26
96574 Application of light with debridement to destroy precancer skin growth	40	40	$343.26	$260.35
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	39	38	$997.87	$772.86
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	32	32	$363.90	$145.38
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	30	25	$241.99	$165.53
J9260 Injection, methotrexate sodium, 50 mg	25	12	$3.05	$2.33
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	25	21	$247.96	$180.13
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks	23	20	$490.85	$379.90
13122 Complicated repair of wound of scalp, arms, or legs, each additional 5.0 cm or less	23	22	$170.11	$131.89
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	23	17	$219.27	$136.65
15260 Relocation of patient skin to nose, ears, eyelids, and/or lips (20 sq centimeters or less)	21	20	$1299.06	$1002.61
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$138.37	$101.32
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	16	11	$18.28	$14.15

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J7345 Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg	5,000	25	$1.50	$1.41
17003 Destruction of precancer skin growth, 2-14 growths	4,434	596	$7.27	$5.58
99213 Established patient office or other outpatient visit, typically 15 minutes	1,490	802	$95.95	$73.71
17000 Destruction of skin growth	1,081	649	$84.47	$45.33
11102 Tangential biopsy of single skin lesion	776	546	$127.70	$93.74
11103 Biopsy of related skin growth, each additional growth	701	348	$68.89	$52.93
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	358	261	$865.89	$499.86
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	311	176	$513.58	$394.56
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	301	235	$140.61	$108.05
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	261	43	$357.36	$274.54
77401 Radiation treatment delivery, superficial	222	43	$31.79	$24.42
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	153	127	$623.36	$251.98
96920 Laser treatment (total area less than 250 sq centimeters) for inflammatory skin disease	148	11	$212.26	$162.53
17110 Destruction of up to 14 skin growths	135	117	$142.77	$106.85
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	105	76	$58.18	$44.70
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	91	78	$559.38	$302.25
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	80	68	$228.66	$160.31
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	66	36	$2.13	$1.62
11900 Injection into skin growth, 1-7 growths	65	41	$70.32	$41.98
14041 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm	58	55	$1221.10	$938.14
69100 Biopsy of ear	57	53	$127.32	$60.06
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	46	36	$243.28	$156.43
17004 Destruction of precancer skin growth, 15 or more growths	45	43	$196.72	$151.13
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	45	42	$519.57	$341.52
J9260 Injection, methotrexate sodium, 50 mg	44	20	$3.28	$2.49
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	42	39	$809.78	$599.91
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	42	40	$1009.78	$775.77
96405 Administration of chemotherapy into growth, 1-7	35	18	$105.60	$71.86
11604 Removal of cancer skin growth of body, arms, or legs, 3.1-4.0 cm	35	33	$408.25	$156.82
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	34	33	$990.72	$761.14
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks	31	20	$490.31	$376.68
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	26	24	$217.95	$135.25
96574 Application of light with debridement to destroy precancer skin growth	25	25	$330.86	$254.19
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	23	19	$266.59	$178.12
13122 Complicated repair of wound of scalp, arms, or legs, each additional 5.0 cm or less	22	22	$172.38	$132.43
14021 Tissue transfer repair of wound (10.1 to 30.0 sq centimeters) of the scalp, arms, and/or legs	15	14	$1131.13	$869.02
14061 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.1-30.0 sq cm	15	15	$1313.30	$1008.95
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	12	12	$249.68	$183.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	5,560	736	$10.84	$5.15
99213 Established patient office or other outpatient visit, typically 15 minutes	1,420	944	$91.34	$71.52
17000 Destruction of skin growth	1,216	819	$83.33	$48.70
11100 Biopsy of single growth of skin and/or tissue	759	570	$130.13	$100.26
11101 Biopsy of each additional growth of skin and/or tissue	600	330	$42.87	$31.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	437	360	$125.35	$105.76
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	295	230	$823.19	$465.76
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	213	125	$485.36	$381.60
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	114	98	$592.59	$246.16
17110 Destruction of up to 14 skin growths	109	96	$138.99	$108.96
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	103	61	$6.13	$1.80
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	97	83	$54.82	$43.00
11900 Injection into skin growth, 1-7 growths	89	66	$69.40	$41.22
17004 Destruction of precancer skin growth, 15 or more growths	80	73	$192.73	$141.95
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	73	59	$217.51	$144.20
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	66	58	$529.14	$314.59
14041 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm	56	48	$1183.07	$922.03
J9260 Injection, methotrexate sodium, 50 mg	54	21	$6.30	$2.38
69100 Biopsy of ear	52	47	$124.64	$61.90
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	51	34	$235.86	$146.70
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	47	44	$985.71	$740.73
88305 Pathology examination of tissue using a microscope, intermediate complexity	46	30	$89.25	$67.70
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	46	46	$136.77	$105.81
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	31	26	$256.03	$184.76
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	27	27	$968.42	$735.10
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	25	24	$490.19	$341.98
96405 Administration of chemotherapy into growth, 1-7	24	15	$104.53	$68.06
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks	22	19	$752.55	$593.00
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	22	21	$345.38	$140.08
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	20	15	$33.75	$20.07
99202 New patient office or other outpatient visit, typically 20 minutes	19	19	$95.10	$72.64
14061 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.1-30.0 sq cm	17	15	$1310.85	$998.14
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	14	13	$194.21	$134.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	5,313	608	$25.00	$5.45
17000 Destruction of skin growth	1,040	660	$75.00	$47.25
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	881	630	$110.00	$104.24
99213 Established patient office or other outpatient visit, typically 15 minutes	868	546	$75.00	$70.89
11100 Biopsy of single growth of skin and/or tissue	706	504	$105.00	$96.67
11101 Biopsy of each additional growth of skin and/or tissue	673	335	$45.00	$31.73
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	295	229	$670.00	$497.00
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks	153	93	$395.00	$377.63
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	130	116	$45.00	$42.33
11900 Injection into skin growth, 1-7 growths	127	81	$55.00	$40.48
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	124	107	$485.00	$233.24
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	89	63	$30.00	$1.78
17004 Destruction of precancer skin growth, 15 or more growths	89	75	$220.00	$145.81
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	85	57	$225.00	$166.05
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	81	72	$175.00	$142.17
17110 Destruction of up to 14 skin growths	69	62	$115.00	$106.04
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	66	50	$175.00	$138.40
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs	46	43	$430.00	$333.70
J9250 Methotrexate sodium, 5 mg	43	21	$40.00	$0.25
14041 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm	39	35	$1000.00	$919.25
13101 Complicated repair of wound of trunk, 2.6-7.5 cm	36	35	$400.00	$352.46
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less	36	36	$1000.00	$756.59
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	30	29	$195.00	$137.78
J9260 Injection, methotrexate sodium, 50 mg	29	15	$30.00	$2.61
69100 Biopsy of ear	26	23	$104.62	$54.60
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less	26	26	$900.00	$741.57
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	20	20	$110.00	$103.51
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	19	17	$165.00	$88.87
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	16	15	$75.00	$24.71
14061 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.1-30.0 sq cm	12	11	$1250.00	$989.01

Medical Specialties & State Licenses

Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

State License AZ 26333

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Dermatology - MOHS-Micrographic Surgery

NUCC Taxonomy Code: 207ND0101X

State License AZ 26333

The highly-trained surgeons that perform Mohs Micrographic Surgery are specialists both in dermatology and pathology. With their extensive knowledge of the skin and unique pathological skills, they are able to remove only diseased tissue, preserving healthy tissue and minimizing the cosmetic impact of the surgery. Mohs surgeons who belong to the American College of Mohs Surgery (ACMS) have completed a minimum of one year of fellowship training at one of the ACMS-approved training centers in the U.S.

Dermatology - Procedural Dermatology

NUCC Taxonomy Code: 207NS0135X

State License AZ 26333

Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers).

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

686868 (AZ)

Commercial Insurance / Payer ID Blue Cross

AZ0873220 (AZ)

Commercial Insurance / Payer ID Cigna

8009018002 (AZ)

Commercial Insurance / Payer ID Aetna

007180050 (AZ)

Commercial Insurance / Payer ID Railroad Medicare

070015308 (AZ)

Commercial Insurance / Payer ID Healthnet

2Z2527 (AZ)

Hospital & Practice Group Affiliations

Center For Dermatology Pllc

4835 E Cactus Rd, Scottsdale, AZ 852544195

Phone: 6029963050

Secondary Practice Locations

2224 W Northern Ave Ste D300

Phoenix, AZ 85021

Phone: 6022771449

2121 W Indian School Rd

Phoenix, AZ 850154908

Phone: 6022771449

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

7 Associated Practitioners

Marlene Wright , FNP

Nurse Practitioner - Family

NPI 1215977467

Family Nurse Practitioner

Meghan Day

Physician Assistant

NPI 1285345140

Dr. Glenn Zellman , MD

Dermatology - Procedural Dermatology

NPI 1285611582

Doctor of Medicine (M.D.)

Dr. John Ebner , DO

Dermatology - MOHS-Micrographic Surgery

NPI 1295927788

Doctor of Osteopathic Medicine (D.O.)

Aubrey Downey , PA-C

Physician Assistant

NPI 1639759525

Physician Assistant (Certified)

Karla Horton , PA

Physician Assistant

NPI 1710934823

Physician Assistant

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location October 25, 2018

Registered at 2224 W NORTHERN AVE STE D300, PHOENIX, AZ 85021 (Tel: 6022771449)

📍

Updated Business Mailing Address October 25, 2018

Registered at 2224 W NORTHERN AVE STE D300, PHOENIX, AZ 850215099 (Tel: 6022771449)

✅

NPI Profile Active December 12, 2013

NPI status registered as active in NPPES database

📍

Updated Practice Location December 12, 2013

Registered at 2121 W INDIAN SCHOOL RD, PHOENIX, AZ 850154908 (Tel: 6022771449)

📍

Updated Business Mailing Address December 12, 2013

Registered at 2121 W INDIAN SCHOOL RD, PHOENIX, AZ 850154908 (Tel: 6022771449)

👤

Provider Name / Credentials Updated December 12, 2013

Recorded as WILLIAM KO, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 12, 2013

Dermatology (License #26333 in AZ)

🟢

Initial NPI Registration & Enumeration June 07, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. William Ko. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1841230976

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 07, 2006

Last Update: October 25, 2018

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2224 W Northern Ave Ste D300

Phoenix, AZ 850215099

Phone: 6022771449

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.