Active NPI 1972540177 Individual Practitioner Male Practitioner

Dr. William M Tang , MD

Ophthalmology • Natick, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. William Tang, MD is a certified Ophthalmology practicing in Natick, MA. With approximately 33 years of clinical experience since graduating from Johns Hopkins University School Of Medicine in 1993, Dr. Tang delivers high-quality medical care to the local community at 182 W CENTRAL ST STE 102.

Dr. Tang accepts Medicare assignment.

Frequently performed procedures and clinical services include injection, faricimab-svoa, 0.1 mg, injection of drug into eye, injection, aflibercept, 1 mg. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

182 W Central St Ste 102
Retina Eye Care, P.c.

Natick, MA 017603756

Telephone 5089030003

Associated Practice Facility / Clinic

🏢 Massachusetts Eye Surgery Llc Facility NPI 1881429306

Medicare Profile & Education

Medical School

Johns Hopkins University School Of Medicine

Graduation Year

1993

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Ophthalmology in Natick, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

33 Yrs +1.0 yrs vs City Avg

City Avg: 32.0 Yrs

State Avg: 30.8 Yrs

Regional Practice Density

3 Specialists

Practicing in Natick, MA (841 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

63.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Tang (33 Years) 33 Yrs

Natick Specialty Average (32.0 Years) 32.0 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
J2777 Injection, faricimab-svoa, 0.1 mg	18,660	68	$55.00	$34.53
67028 Injection of drug into eye	1,440	253	$409.98	$142.99
J0178 Injection, aflibercept, 1 mg	1,372	101	$1650.00	$825.58
J0177 Injection, aflibercept hd, 1 mg	1,120	37	$500.00	$332.52
92134 Imaging of retina	1,063	646	$250.00	$46.29
99213 Established patient office or other outpatient visit, typically 15 minutes	813	589	$274.78	$102.25
92250 Photography of the retina	730	711	$245.00	$42.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	654	641	$377.41	$144.08
J9035 Injection, bevacizumab, 10 mg	527	87	$140.00	$72.19
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	217	217	$450.00	$186.59
J3490 Unclassified drugs	84	48	$4100.00	$2660.78
92133 Imaging of optic nerve	70	68	$250.00	$40.66
92083 Exam of visual field with extended testing	45	42	$250.00	$74.03
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$350.00	$125.28
76514 Ultrasound scan of cornea to determine thickness	36	36	$140.00	$12.03
67145 Photocoagulation treatment to prevent detachment of retina	24	17	$1650.00	$278.10
92020 Examination of cornea and iris using lens device and slit lamp	24	23	$130.00	$31.19
76512 Ultrasound of eye disease, growth, or structure	22	19	$327.27	$60.10
67036 Removal of eye fluid (vitreous) between the lens and retina	15	13	$4000.00	$764.10
67108 Repair of detached retina and drainage of eye fluid between lens and retina	14	14	$4750.00	$1322.18
66821 Removal of recurring cataract in lens capsule using a laser	13	12	$810.00	$384.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J2777 Injection, faricimab-svoa, 0.1 mg	5,460	24	$48.08	$36.43
J0178 Injection, aflibercept, 1 mg	1,802	140	$1799.17	$868.88
67028 Injection of drug into eye	1,645	245	$403.00	$139.20
92134 Imaging of retina	1,118	735	$243.69	$45.48
J9035 Injection, bevacizumab, 10 mg	979	151	$140.00	$70.78
99213 Established patient office or other outpatient visit, typically 15 minutes	635	483	$256.69	$99.47
92250 Photography of the retina	551	548	$245.00	$41.88
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	376	368	$348.59	$140.42
92014 Established patient complete exam of visual system	306	306	$375.00	$142.21
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	173	173	$432.37	$181.23
92012 Established patient problem focused exam of visual system	98	97	$295.00	$102.00
92133 Imaging of optic nerve	63	60	$244.29	$40.56
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	54	54	$350.00	$123.54
92083 Exam of visual field with extended testing	30	28	$250.00	$71.69
76512 Ultrasound of eye disease, growth, or structure	20	19	$345.00	$62.33
67145 Photocoagulation treatment to prevent detachment of retina	18	16	$1650.00	$272.17
92020 Examination of cornea and iris using lens device and slit lamp	16	16	$130.00	$30.82
76514 Ultrasound scan of cornea to determine thickness	16	16	$140.00	$11.83
67036 Removal of eye fluid (vitreous) between the lens and retina	16	14	$4000.00	$900.01
J3490 Unclassified drugs	16	13	$4100.00	$2660.49
67108 Repair of detached retina and drainage of eye fluid between lens and retina	11	11	$4750.00	$1292.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0178 Injection, aflibercept, 1 mg	1,880	101	$1567.45	$902.53
67028 Injection of drug into eye	1,729	257	$390.36	$143.62
92134 Imaging of retina	1,445	736	$205.00	$46.90
J9035 Injection, bevacizumab, 10 mg	1,143	169	$140.00	$68.28
92250 Photography of the retina	546	539	$237.95	$42.77
92012 Established patient problem focused exam of visual system	427	382	$295.00	$103.67
99213 Established patient office or other outpatient visit, typically 15 minutes	407	307	$217.76	$102.59
92014 Established patient complete exam of visual system	407	407	$375.00	$146.12
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	236	230	$304.85	$144.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	216	216	$425.00	$186.47
92133 Imaging of optic nerve	76	71	$205.00	$42.31
76514 Ultrasound scan of cornea to determine thickness	57	57	$140.00	$12.44
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	34	34	$350.00	$126.19
76512 Ultrasound of eye disease, growth, or structure	33	29	$354.55	$65.60
92020 Examination of cornea and iris using lens device and slit lamp	30	28	$130.00	$32.14
67145 Photocoagulation treatment to prevent detachment of retina	29	27	$1650.00	$276.26
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	24	$150.00	$64.53
67036 Removal of eye fluid (vitreous) between the lens and retina	20	20	$4000.00	$964.50
92083 Exam of visual field with extended testing	18	17	$250.00	$73.82
67108 Repair of detached retina and drainage of eye fluid between lens and retina	15	15	$4420.00	$1326.28
67042 Removal of membrane of retina with removal of internal limiting membrane of retina	13	12	$4400.00	$1249.06
66985 Insertion of prosthetic lens	11	11	$2000.00	$470.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92134 Imaging of retina	1,689	866	$205.00	$47.67
67028 Injection of drug into eye	1,615	256	$364.64	$145.40
J0178 Injection, aflibercept, 1 mg	1,606	94	$1550.00	$918.58
J9035 Injection, bevacizumab, 10 mg	1,149	177	$140.00	$72.16
92012 Established patient problem focused exam of visual system	673	553	$295.00	$105.04
92014 Established patient complete exam of visual system	626	621	$375.00	$147.68
92250 Photography of the retina	531	528	$210.00	$45.64
99213 Established patient office or other outpatient visit, typically 15 minutes	334	287	$203.58	$103.85
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	230	230	$425.00	$188.85
92133 Imaging of optic nerve	107	96	$205.00	$42.82
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	102	102	$285.00	$145.93
92020 Examination of cornea and iris using lens device and slit lamp	70	59	$130.00	$32.22
76514 Ultrasound scan of cornea to determine thickness	70	70	$140.00	$12.69
92083 Exam of visual field with extended testing	58	54	$250.00	$75.07
76512 Ultrasound of eye disease, growth, or structure	46	39	$352.17	$64.88
92004 New patient complete exam of visual system	40	40	$405.00	$174.70
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	32	30	$150.00	$64.73
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$350.00	$127.64
67036 Removal of eye fluid (vitreous) between the lens and retina	16	15	$4000.00	$983.09
67145 Photocoagulation treatment to prevent detachment of retina	15	13	$1650.00	$596.97
67108 Repair of detached retina and drainage of eye fluid between lens and retina	13	12	$4200.00	$1317.22
92235 Exam of retinal blood vessels using a special camera after injection of a dye	13	13	$325.00	$140.85
67042 Removal of membrane of retina with removal of internal limiting membrane of retina	13	13	$4400.00	$1266.81
66821 Removal of recurring cataract in lens capsule using a laser	12	11	$810.00	$391.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92134 Imaging of retina	1,391	732	$205.00	$47.19
67028 Injection of drug into eye	1,178	213	$355.01	$125.80
J9035 Injection, bevacizumab, 10 mg	907	162	$140.00	$78.13
J0178 Injection, aflibercept, 1 mg	828	66	$1550.00	$930.63
92014 Established patient complete exam of visual system	598	597	$356.47	$145.63
92012 Established patient problem focused exam of visual system	505	409	$234.66	$102.76
92250 Photography of the retina	430	424	$208.43	$52.32
99213 Established patient office or other outpatient visit, typically 15 minutes	268	221	$195.00	$85.50
J0179 Injection, brolucizumab-dbll, 1 mg	234	15	$400.00	$315.75
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	197	197	$423.17	$185.78
92133 Imaging of optic nerve	130	123	$205.00	$42.88
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	95	94	$275.53	$122.89
92020 Examination of cornea and iris using lens device and slit lamp	79	68	$130.00	$31.77
76512 Ultrasound of eye disease, growth, or structure	70	52	$338.57	$67.73
92004 New patient complete exam of visual system	59	59	$405.00	$172.72
92083 Exam of visual field with extended testing	36	35	$250.00	$73.05
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	29	23	$150.00	$52.50
67145 Photocoagulation treatment to prevent detachment of retina	19	17	$1439.47	$574.47
67036 Removal of eye fluid (vitreous) between the lens and retina	16	14	$4000.00	$920.87
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$350.00	$122.69
67042 Removal of membrane of retina with removal of internal limiting membrane of retina	15	15	$4400.00	$1316.76
92235 Exam of retinal blood vessels using a special camera after injection of a dye	14	13	$325.00	$123.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92134 Imaging of retina	1,431	763	$205.00	$46.64
67028 Injection of drug into eye	1,090	191	$344.31	$122.97
J9035 Injection, bevacizumab, 10 mg	832	136	$138.49	$79.93
J0178 Injection, aflibercept, 1 mg	756	51	$1550.00	$943.04
92014 Established patient complete exam of visual system	598	598	$325.67	$143.80
92012 Established patient problem focused exam of visual system	562	448	$209.13	$100.49
99213 Established patient office or other outpatient visit, typically 15 minutes	271	231	$182.27	$83.30
92250 Photography of the retina	261	256	$193.89	$57.73
92004 New patient complete exam of visual system	167	167	$389.91	$170.14
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	105	105	$396.05	$182.83
76512 Ultrasound of eye disease, growth, or structure	79	61	$349.37	$77.72
92133 Imaging of optic nerve	78	73	$205.00	$42.01
92020 Examination of cornea and iris using lens device and slit lamp	65	53	$130.00	$30.94
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	43	38	$150.00	$51.21
92083 Exam of visual field with extended testing	33	30	$250.00	$74.10
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	25	$265.00	$117.54
67145 Photocoagulation treatment to prevent detachment of retina	25	24	$1400.00	$595.04
67036 Removal of eye fluid (vitreous) between the lens and retina	20	18	$4000.00	$934.80
92235 Exam of retinal blood vessels using a special camera after injection of a dye	17	17	$325.00	$105.89
92242 Exam of retinal blood vessels and blood vessels between the white part of eye and retina using a special camera after injection of a dye	13	13	$650.00	$271.18
67041 Removal of membrane from the retina	11	11	$4400.00	$1234.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92134 Imaging of retina	1,192	665	$185.77	$49.12
67028 Injection of drug into eye	971	189	$345.73	$127.98
J0178 Injection, aflibercept, 1 mg	732	60	$1540.16	$953.48
J9035 Injection, bevacizumab, 10 mg	718	130	$120.00	$76.69
92014 Established patient complete exam of visual system	565	562	$289.78	$148.20
92012 Established patient problem focused exam of visual system	454	369	$195.00	$103.32
99213 Established patient office or other outpatient visit, typically 15 minutes	269	209	$170.00	$84.73
92250 Photography of the retina	250	249	$185.00	$66.65
92004 New patient complete exam of visual system	154	154	$375.00	$175.99
92020 Examination of cornea and iris using lens device and slit lamp	83	67	$130.00	$31.30
92133 Imaging of optic nerve	75	70	$158.80	$44.06
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	74	74	$375.00	$187.99
76512 Ultrasound of eye disease, growth, or structure	65	51	$336.92	$98.00
92083 Exam of visual field with extended testing	39	37	$250.00	$76.97
92235 Exam of retinal blood vessels using a special camera after injection of a dye	38	38	$325.00	$102.95
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	35	35	$265.00	$124.35
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	24	$150.00	$51.66
67145 Photocoagulation treatment to prevent detachment of retina	22	20	$1400.00	$617.22
92242 Exam of retinal blood vessels and blood vessels between the white part of eye and retina using a special camera after injection of a dye	17	17	$650.00	$279.62
67036 Removal of eye fluid (vitreous) between the lens and retina	17	17	$4000.00	$1004.84
92002 New patient problem focused exam of visual system	11	11	$275.00	$97.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92134 Imaging of retina	1,104	607	$180.00	$45.21
67028 Injection of drug into eye	945	160	$339.37	$117.94
J0178 Injection, aflibercept, 1 mg	720	56	$1450.00	$962.54
J9035 Injection, bevacizumab, 10 mg	665	106	$120.00	$73.04
92012 Established patient problem focused exam of visual system	467	352	$195.00	$94.43
92014 Established patient complete exam of visual system	425	424	$265.00	$136.60
99213 Established patient office or other outpatient visit, typically 15 minutes	224	170	$170.00	$79.46
92250 Photography of the retina	188	184	$185.00	$74.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	162	161	$265.00	$116.21
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	136	136	$375.00	$175.56
92133 Imaging of optic nerve	61	56	$150.00	$41.02
92004 New patient complete exam of visual system	53	53	$375.00	$163.82
92235 Exam of retinal blood vessels using a special camera after injection of a dye	50	49	$338.00	$90.48
76512 Ultrasound of eye disease, growth, or structure	45	37	$333.33	$112.94
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	24	$150.00	$47.92
92020 Examination of cornea and iris using lens device and slit lamp	31	26	$130.00	$29.42
92242 Exam of retinal blood vessels and blood vessels between the white part of eye and retina using a special camera after injection of a dye	28	27	$650.00	$259.41
92083 Exam of visual field with extended testing	27	26	$250.00	$70.70
67145 Photocoagulation treatment to prevent detachment of retina	23	17	$1400.00	$571.05
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	17	17	$350.00	$117.17

Medical Specialties & State Licenses

CMS Verified: 2021-11-21

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

State License MA 153637

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 182 W CENTRAL ST STE 102, RETINA EYE CARE, P.C., NATICK, MA 017603756 (Tel: 5089030003)

📍

Updated Business Mailing Address July 08, 2007

Registered at 182 W CENTRAL ST, SUITE 102, NATICK, MA 017603756 (Tel: 5089030003)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as WILLIAM TANG, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Ophthalmology (License #153637 in MA)

🟢

Initial NPI Registration & Enumeration May 31, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1972540177

Entity Type:

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

Enumeration Date: May 31, 2006

Last Update: November 21, 2021

Sole Proprietor: No

Update or Correct Profile

Mailing Address

182 W Central St, Suite 102

Natick, MA 017603756

Phone: 5089030003

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.