Dr. Duncan Friedman, M.D.
What this data tells you about Dr. Friedman
Dr. Duncan Friedman is an ophthalmology specialist in San Antonio, TX, with 17 years of NPI registration. Based on federal Medicare data, Dr. Friedman performed 4,896 Medicare services across 2,466 unique beneficiaries.
Between the years covered by Open Payments, Dr. Friedman received a total of $7,348 from 27 pharmaceutical and/or device companies across 94 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in ophthalmology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Friedman is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Retinal imaging (OCT scan) | 1,387 | $28 | $65 |
| Comprehensive eye exam, established patient | 857 | $85 | $155 |
| Extended exam of the back part of the eye with optic nerve drawing | 640 | $11 | $80 |
| Aflibercept eye injection (Eylea) | 564 | $683 | $2,000 |
| Eye injection for retinal disease | 500 | $87 | $916 |
| Eye exam, established patient, focused | 316 | $61 | $107 |
| Compounded drug, not otherwise classified | 190 | $68 | $463 |
| Comprehensive eye exam, new patient | 175 | $96 | $173 |
| Visual field test, extended | 94 | $44 | $105 |
| Optic nerve imaging (OCT scan) | 60 | $24 | $65 |
| 2d ultrasound scan of eye tissue and structures | 22 | $34 | $200 |
| Ultrasound scan of cornea to determine thickness | 19 | $8 | $20 |
| Exam of retinal blood vessels using a special camera after injection of a dye | 17 | $95 | $225 |
| Exam of the internal drainage system of eye | 16 | $20 | $63 |
| Photocoagulation treatment to prevent detachment of retina | 14 | $188 | $1,636 |
| Removal of recurring cataract in lens capsule using a laser | 13 | $238 | $1,000 |
| Removal of membrane of retina with removal of internal limiting membrane of retina | 12 | $881 | $6,500 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
Associated products mentioned in payments ›
Most payments (79%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
2.8 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Friedman is a mixed practice specialist, with above-average Medicare volume (top 17% in TX), with low-engagement industry engagement in the top 16% of TX peers, with 17 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
Is Dr. Friedman experienced with retinal imaging (oct scan)?
Does Dr. Friedman receive payments from pharmaceutical companies?
How do Dr. Friedman's costs compare to other ophthalmologists in San Antonio?
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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