Physician

William M Tang, M.D.

According to 2025 Medicare claims, William Tang, M.D. (NPI: 1972540177) practices ophthalmology in the Cambridge-Newton-Framingham, MA market, with the plurality of this provider's patient population coming from Middlesex, MA. This provider's primary affiliated billing organization is RETINA EYE CARE P.C. (NPI: 1639236714; TIN: 043568119) and primary practice location at 01760-3756.

Tang's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,148 traditional Medicare patients, billed 27,266 HCPCS/CPT codes, and received $2,380,600 in Medicare payments. The top billing code was 67028 (Injection of drug into eye). Part D data shows 1,194 prescription claims across 247 beneficiaries totaling $69,079 in drug costs, led by Bromfenac Sodium (Bromfenac Sodium). Open Payments data shows 2 records totaling $47. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing has moved sharply higher in recent years, from $930,010 to $2,380,600. Similarly, Part D prescription costs have risen steadily, from $29,182 to $69,079. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.

Part B Carrier Billing Trend

Medicare payment trend, with N of patients and claim lines in the table.

Year	Patients	Clm Lines	Payment
2015	744	5,811	$930,010
2016	834	5,872	$1,061,550
2017	881	6,118	$952,594
2018	943	6,310	$1,014,722
2019	1,027	7,077	$1,073,143
2020	1,026	7,470	$1,176,633
2021	1,188	9,249	$1,814,625
2022	1,154	10,162	$1,986,585
2023	1,137	13,541	$1,925,217
2024	1,148	27,266	$2,380,600

Part D Events Trend

Drug cost trend, with N of patients and prescription claims in the table.

Year	Patients	Claims	Drug Cost
2015	117	622	$29,182
2016	163	915	$41,420
2017	138	781	$43,217
2018	166	939	$45,724
2019	195	904	$52,034
2020	245	1,146	$58,957
2021	301	1,510	$73,623
2022	254	1,350	$92,139
2023	245	1,186	$80,487
2024	247	1,194	$69,079

DME Billing Trend

Medicare payment trend, with N of patients and DME claim records in the table.

No connected DME records

* / # = suppressed by CMS; 0 = reported zero; N/R = not reported or blank.

Top 5 Part B carrier billing codes in 2024

By total payments.

Code	Description	Patients	Clm Lines	Total Payment
67028	Injection of drug into eye	253	1,440	$108
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	641	654	$102
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	589	813	$72
92134	Imaging of retina	646	1,063	$34
92250	Photography of the retina	711	730	$31

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Bromfenac Sodium	Bromfenac Sodium	71	2,232	$13,207
Prolensa	Bromfenac Sodium	34	1,377	$11,895
Vyzulta	Latanoprostene Bunod	23	942	$8,117
Prednisolone Acetate	Prednisolone Acetate	107	5,456	$6,998
Latanoprost	Latanoprost	313	18,001	$4,257

Top 5 DME services in 2024

No connected or detailed DME service-level records for 2024.

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	2	$47	EAGLE PHARMACEUTICALS, INC.
Research Payments	Reported research-related payment or transfer-of-value amount.	0	$0	N/R
Ownership / Investment Interests	Reported value of ownership or investment interests.	0	$0	N/R

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FAQ

What Medicare data is available for William M. Tang, M.D.?

Tedicare shows public-source Medicare data for William M. Tang, M.D. (NPI 1972540177), including provider identity, specialty, market context, Medicare Part B activity, Part D prescribing, DME records, Open Payments where available, billing organization details, and ACO affiliation signals where available. Profile data covers 2015-2024, with current attribution based on 2025 claims where available.

Does William M. Tang, M.D. have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to William M. Tang, M.D.?

William M. Tang, M.D. is linked to RETINA EYE CARE P.C. (billing NPI 1639236714) in the available physician profile data.

Does William M. Tang, M.D. have Open Payments data?

William M. Tang, M.D. has 2 connected Open Payments records in the available 2024 summary data.

Can I download physician-level Medicare data from Tedicare?

Yes. Tedicare provides sample physician export data and paid custom physician data exports for research, planning, outreach, and market analysis. Exports can include physician profile fields, market and specialty context, billing organization details, ACO affiliation signals where available, and Medicare utilization data.