Duncan Friedman, M.D.
NPI 1457512725 · Retina Specialist (Ophthalmology) Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duncan Friedman, M.D. is a Retina Specialist (Ophthalmology) Physician provider in San Antonio, TX (NPI 1457512725).
Provider details
- NPI number
- 1457512725
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- P5275 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
4,134 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Imaging of Retina92134 | 1,311 | $40 |
| Established Patient Complete Exam of Visual System92014 | 844 | $125 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 594 | $15 |
| Injection of Drug Into Eye67028 | 538 | $120 |
| Compounded Drug, Not Otherwise ClassifiedJ7999 | 245 | $90 |
| Established Patient Problem Focused Exam of Visual System92012 | 174 | $87 |
| New Patient Complete Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 268 | 91 |
| Timolol Maleate | 136 | 47 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 96 | 74 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 57 | 17 |
| Ketorolac Tromethamine | 38 | 16 |
| Brimonidine Tartrate | 35 | 14 |
| Dorzolamide Hcl | 23 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,415 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 931 E Main StUvalde, TX 78801-4855Phone: (210) 880-3000Fax: (210) 227-6056
Registry dates
- Enumerated
- 2008-06-19
- Last updated
- 2026-05-01
- Certified
- 2026-05-01
Frequently asked questions
- What is Duncan Friedman's NPI number?
- Duncan Friedman's National Provider Identifier (NPI) is 1457512725, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duncan Friedman's specialty?
- Duncan Friedman is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is Duncan Friedman located?
- Duncan Friedman's practice location on file with NPPES is 622 Isom Rd, San Antonio, TX 78216-4464.
- What is Duncan Friedman's phone number?
- The practice phone number listed in the NPPES registry for Duncan Friedman is (210) 880-3000.
- Does Duncan Friedman accept Medicare?
- Duncan Friedman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duncan Friedman's NPI active?
- Yes — Duncan Friedman's NPI (1457512725) is active in the NPPES registry as of the last update on 2026-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.