Active NPI 1720055833 Individual Practitioner Male Practitioner

Dr. Mark David Koone , MD

Dermatology • Sherman, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Koone, MD is a certified Dermatology practicing in Sherman, TX. With approximately 44 years of clinical experience since graduating from Baylor College Of Medicine in 1982, Dr. Koone delivers high-quality medical care to the local community at 230 E SYCAMORE ST STE 305.

Dr. Koone is affiliated with Pdp Of Texas, Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include destruction of precancer skin growth, 2-14 growths, destruction of skin growth, 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

230 E Sycamore St Ste 305

Sherman, TX 750905013

Telephone 9037714613

Fax 9036986376

Associated Practice Facility / Clinic

🏢 Center For Dermatology, Pllc Facility NPI 1194792416

Medicare Profile & Education

Medical School

Baylor College Of Medicine

Graduation Year

1982

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Dermatology in Sherman, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

44 Yrs +19.0 yrs vs City Avg

City Avg: 25.0 Yrs

State Avg: 20.2 Yrs

Regional Practice Density

3 Specialists

Practicing in Sherman, TX (1210 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

59.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Koone (44 Years) 44 Yrs

Sherman Specialty Average (25.0 Years) 25.0 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
17003 Destruction of precancer skin growth, 2-14 growths	4,497	564	$15.00	$6.61
17000 Destruction of skin growth	1,029	663	$151.00	$54.97
99213 Established patient office or other outpatient visit, typically 15 minutes	866	622	$197.00	$91.52
17110 Destruction of up to 14 skin growths	458	363	$259.00	$110.31
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	286	224	$124.00	$56.74
11102 Tangential biopsy of single skin lesion	274	238	$227.00	$89.44
17004 Destruction of precancer skin growth, 15 or more growths	191	133	$376.00	$166.83
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	134	134	$241.00	$111.94
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	77	62	$399.00	$165.27
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	56	$277.00	$129.29
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	57	46	$401.00	$158.80
11103 Biopsy of related skin growth, each additional growth	40	31	$113.00	$50.31
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	39	34	$334.00	$131.88
11104 Punch biopsy, first skin growth	33	32	$282.00	$124.96
99202 New patient office or other outpatient visit, typically 20 minutes	32	32	$158.00	$72.61
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	24	24	$457.00	$200.85
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	23	23	$680.00	$283.76
17271 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm	20	15	$372.00	$155.53
10060 Simple or single drainage of skin abscess	19	17	$283.00	$127.59
69100 Biopsy of ear	19	17	$213.00	$70.45
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	19	16	$421.00	$174.49
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	11	11	$595.00	$135.33

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	4,047	512	$14.00	$6.49
17000 Destruction of skin growth	936	625	$136.00	$52.78
99213 Established patient office or other outpatient visit, typically 15 minutes	586	421	$186.00	$87.60
17110 Destruction of up to 14 skin growths	353	304	$236.00	$107.87
11102 Tangential biopsy of single skin lesion	269	236	$217.00	$90.37
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	248	200	$115.00	$54.47
17004 Destruction of precancer skin growth, 15 or more growths	239	154	$343.00	$163.89
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	173	173	$228.00	$108.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	77	63	$253.00	$124.32
99202 New patient office or other outpatient visit, typically 20 minutes	73	73	$149.00	$70.25
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	63	53	$371.00	$151.87
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	61	47	$307.00	$159.83
11103 Biopsy of related skin growth, each additional growth	50	43	$110.00	$48.98
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	43	40	$307.00	$122.39
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	39	37	$639.00	$281.03
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	36	30	$425.00	$181.17
11104 Punch biopsy, first skin growth	26	26	$270.00	$120.28
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	24	21	$390.00	$176.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$340.00	$161.91
17271 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm	22	22	$343.00	$140.27
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	18	17	$358.00	$83.64
10060 Simple or single drainage of skin abscess	14	13	$254.00	$122.30
69100 Biopsy of ear	13	11	$205.00	$72.35
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	13	13	$399.00	$188.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	2,487	302	$14.00	$6.67
17000 Destruction of skin growth	512	352	$136.00	$52.99
99213 Established patient office or other outpatient visit, typically 15 minutes	368	278	$186.00	$88.81
17110 Destruction of up to 14 skin growths	175	151	$236.00	$107.49
17004 Destruction of precancer skin growth, 15 or more growths	136	92	$343.00	$165.54
11102 Tangential biopsy of single skin lesion	133	121	$217.00	$87.58
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	122	110	$115.00	$55.21
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	61	$253.00	$125.83
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	64	64	$228.00	$109.38
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	43	38	$307.00	$161.95
11103 Biopsy of related skin growth, each additional growth	37	27	$110.00	$50.60
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	33	28	$371.00	$152.07
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	24	19	$425.00	$190.03
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	23	20	$390.00	$178.15
99202 New patient office or other outpatient visit, typically 20 minutes	21	21	$149.00	$71.15
17271 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm	16	13	$343.00	$132.85
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	16	15	$639.00	$271.88
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	14	13	$307.00	$124.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	3,047	405	$16.82	$6.42
17000 Destruction of skin growth	628	464	$167.41	$54.36
99213 Established patient office or other outpatient visit, typically 15 minutes	328	279	$227.93	$89.46
11102 Tangential biopsy of single skin lesion	192	166	$256.08	$92.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	186	171	$291.87	$127.13
17004 Destruction of precancer skin growth, 15 or more growths	175	133	$407.64	$162.72
17110 Destruction of up to 14 skin growths	173	158	$285.42	$110.03
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	131	111	$137.24	$55.17
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	45	40	$372.23	$162.77
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	42	32	$498.89	$179.39
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	40	40	$228.00	$110.10
11103 Biopsy of related skin growth, each additional growth	34	28	$127.94	$52.37
99202 New patient office or other outpatient visit, typically 20 minutes	34	34	$149.00	$71.51
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	29	20	$419.96	$167.40
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	25	25	$420.84	$170.53
11104 Punch biopsy, first skin growth	18	15	$310.56	$128.52
12052 Repair of wound (2.6 to 5.0 centimeters) of face, ears, eyelids, nose, lips, and/or mouth	16	16	$701.13	$313.37
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	16	16	$637.41	$133.80
69100 Biopsy of ear	14	13	$270.23	$73.25
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	13	13	$357.95	$140.87
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	12	12	$725.79	$305.15

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	8,263	1,096	$17.56	$5.64
17000 Destruction of skin growth	1,747	1,254	$155.42	$51.30
99213 Established patient office or other outpatient visit, typically 15 minutes	1,095	868	$176.44	$70.55
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	562	463	$109.35	$42.60
17004 Destruction of precancer skin growth, 15 or more growths	457	317	$365.10	$148.19
17110 Destruction of up to 14 skin growths	456	411	$266.39	$103.36
11102 Tangential biopsy of single skin lesion	417	342	$238.57	$84.71
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	104	77	$430.42	$141.23
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	90	79	$424.09	$155.15
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	71	57	$521.80	$177.12
11103 Biopsy of related skin growth, each additional growth	61	50	$126.87	$49.72
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	44	40	$349.82	$119.39
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	42	40	$741.67	$265.60
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	41	39	$421.46	$163.35
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	38	33	$652.28	$126.44
11104 Punch biopsy, first skin growth	35	35	$290.29	$116.69
12051 Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.5 cm or less	33	33	$634.67	$243.53
12052 Repair of wound (2.6 to 5.0 centimeters) of face, ears, eyelids, nose, lips, and/or mouth	31	27	$725.29	$262.87
69100 Biopsy of ear	20	18	$231.15	$61.30
17271 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm	18	16	$374.44	$128.56
11641 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm	18	18	$584.08	$111.53
11622 Removal of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	17	15	$665.24	$126.67
17263 Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm	13	13	$500.08	$181.22
12042 Intermediate repair of wound of neck, hands, feet, or genitals, 2.6-7.5 cm	13	12	$722.54	$282.37
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	11	11	$555.27	$115.13
10060 Simple or single drainage of skin abscess	11	11	$287.18	$109.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	10,293	1,287	$13.67	$5.36
17000 Destruction of skin growth	2,103	1,481	$133.00	$53.33
99213 Established patient office or other outpatient visit, typically 15 minutes	1,345	1,043	$151.00	$71.17
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	701	573	$92.00	$43.22
17004 Destruction of precancer skin growth, 15 or more growths	504	324	$311.00	$145.63
17110 Destruction of up to 14 skin growths	487	428	$226.00	$103.18
11102 Tangential biopsy of single skin lesion	463	403	$202.00	$85.65
96910 Skin application of tar and ultraviolet B or petrolatum and ultraviolet B	190	12	$234.00	$107.73
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	128	90	$361.00	$151.98
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	101	88	$367.00	$162.60
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	65	61	$421.00	$192.85
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	55	52	$296.00	$121.05
11103 Biopsy of related skin growth, each additional growth	54	44	$109.00	$50.83
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	53	47	$384.00	$164.82
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	34	33	$623.00	$276.04
11104 Punch biopsy, first skin growth	32	32	$254.00	$116.63
17271 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm	32	32	$337.00	$150.37
69100 Biopsy of ear	29	25	$201.00	$86.14
99202 New patient office or other outpatient visit, typically 20 minutes	26	26	$155.00	$73.66
12051 Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.5 cm or less	22	21	$544.00	$214.15
12042 Intermediate repair of wound of neck, hands, feet, or genitals, 2.6-7.5 cm	18	17	$606.00	$253.73
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	16	15	$557.00	$171.17
12052 Repair of wound (2.6 to 5.0 centimeters) of face, ears, eyelids, nose, lips, and/or mouth	16	16	$616.00	$252.53
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	15	14	$509.00	$127.00
11622 Removal of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	15	14	$526.00	$139.56
10060 Simple or single drainage of skin abscess	15	15	$243.00	$114.39
11641 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm	12	12	$489.00	$114.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	10,450	1,269	$37.37	$5.02
17000 Destruction of skin growth	2,097	1,447	$144.02	$54.35
99213 Established patient office or other outpatient visit, typically 15 minutes	1,179	905	$105.40	$70.15
17004 Destruction of precancer skin growth, 15 or more growths	548	363	$377.20	$138.14
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	541	451	$68.50	$42.00
17110 Destruction of up to 14 skin growths	484	428	$195.68	$104.86
11100 Biopsy of single growth of skin and/or tissue	403	357	$185.17	$92.09
96910 Skin application of tar and ultraviolet B or petrolatum and ultraviolet B	177	12	$177.20	$106.59
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	107	84	$282.90	$149.81
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	94	81	$312.79	$156.08
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	83	65	$326.06	$182.34
99202 New patient office or other outpatient visit, typically 20 minutes	49	49	$116.66	$70.23
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	49	47	$344.23	$167.59
11101 Biopsy of each additional growth of skin and/or tissue	45	38	$85.65	$31.55
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	34	32	$547.38	$269.22
17271 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm	34	31	$294.98	$143.46
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	33	29	$256.90	$125.81
69100 Biopsy of ear	21	20	$196.11	$73.79
12051 Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.5 cm or less	21	20	$481.38	$200.69
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	21	21	$435.41	$201.25
10060 Simple or single drainage of skin abscess	18	18	$207.36	$105.05
12052 Repair of wound (2.6 to 5.0 centimeters) of face, ears, eyelids, nose, lips, and/or mouth	15	15	$549.25	$226.34
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	14	14	$439.91	$139.57
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	13	13	$284.31	$80.10
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	13	11	$498.54	$170.60
11641 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm	12	12	$423.21	$114.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	12,064	1,454	$10.24	$5.26
17000 Destruction of skin growth	2,412	1,668	$76.02	$55.53
99213 Established patient office or other outpatient visit, typically 15 minutes	1,536	1,235	$75.46	$69.26
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	1,376	1,112	$43.76	$41.48
17004 Destruction of precancer skin growth, 15 or more growths	553	360	$179.70	$142.07
11100 Biopsy of single growth of skin and/or tissue	499	427	$111.62	$90.55
17110 Destruction of up to 14 skin growths	432	392	$119.45	$103.18
96910 Skin application of tar and ultraviolet B or petrolatum and ultraviolet B	241	11	$74.71	$65.78
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth	108	97	$190.79	$162.47
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	91	80	$190.71	$152.19
99202 New patient office or other outpatient visit, typically 20 minutes	83	83	$75.02	$71.12
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	64	59	$209.00	$169.41
17282 Destruction of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	57	50	$212.34	$188.84
11101 Biopsy of each additional growth of skin and/or tissue	55	44	$40.49	$30.88
17271 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm	41	41	$189.51	$141.78
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	36	35	$316.39	$259.05
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	35	32	$161.57	$117.82
12051 Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.5 cm or less	32	31	$284.87	$182.89
10060 Simple or single drainage of skin abscess	29	26	$136.21	$107.60
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	19	19	$261.11	$218.73
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	17	17	$276.20	$212.50
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	17	14	$773.75	$620.72
12052 Repair of wound (2.6 to 5.0 centimeters) of face, ears, eyelids, nose, lips, and/or mouth	17	16	$315.08	$221.42
11641 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm	16	15	$263.85	$112.62
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm	14	14	$177.54	$84.04

Medical Specialties & State Licenses

CMS Verified: 2025-07-29

Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

State License TX H1976

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.

Hospital & Practice Group Affiliations

Pdp Of Texas, Pllc

230 E Sycamore St, Sherman, TX 750905000

Phone: 9037714613

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Matthew Helm , MD

Dermatology

NPI 1346583150

Doctor of Medicine (M.D.)

Hollis Adams , FNP-BC

Nurse Practitioner - Family

NPI 1962188839

Family Nurse Practitioner (Board Certified)

Career & Practice History Timeline

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

14 Historical Events

📍

Updated Business Mailing Address July 29, 2025

Registered at 9900 N CENTRAL EXPY STE 500, DALLAS, TX 752310928 (Tel: 2149873376)

📍

Updated Practice Location June 25, 2024

Registered at 230 E SYCAMORE ST STE 305, SHERMAN, TX 750905013 (Tel: 9037714613)

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Updated Business Mailing Address June 25, 2024

Registered at 12700 PARK CENTRAL DR STE 1210, DALLAS, TX 752511522 (Tel: 2149873376)

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NPI Profile Active July 26, 2017

NPI status registered as active in NPPES database

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Updated Practice Location July 26, 2017

Registered at 815 E PECAN GROVE RD, SHERMAN, TX 750901768 (Tel: 9038922126)

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Updated Business Mailing Address July 26, 2017

Registered at 815 PECAN GROVE RD E, SHERMAN, TX 750901768 (Tel: 9038922126)

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Provider Name / Credentials Updated July 26, 2017

Recorded as MARK KOONE, MD

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Medical Taxonomy / Specialty Registered (Primary Specialty) July 26, 2017

Dermatology (License #H1976 in TX)

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NPI Profile Active June 05, 2015

NPI status registered as active in NPPES database

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Updated Practice Location June 05, 2015

Registered at 815 E PECAN GROVE RD, SHERMAN, TX 750901768 (Tel: 9038922126)

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Updated Business Mailing Address June 05, 2015

Registered at 815 PECAN GROVE RD E, SHERMAN, TX 750901768 (Tel: 9038922126)

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Provider Name / Credentials Updated June 05, 2015

Recorded as MARK KOONE, M.D.

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Medical Taxonomy / Specialty Registered (Primary Specialty) June 05, 2015

Dermatology (License #H1976 in TX)

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Initial NPI Registration & Enumeration March 07, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1720055833

Entity Type:

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

Enumeration Date: March 07, 2006

Last Update: July 29, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

9900 N Central Expy Ste 500

Dallas, TX 752310928

Phone: 2149873376

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.