Duncan Aesctun Friedman, M.D.
Retina Specialist (Ophthalmology) Physician · San Antonio, TX
Duncan Aesctun Friedman, M.D. is a retina specialist (ophthalmology) physician with a practice address in San Antonio, Texas, and NPI 1457512725, issued on Jun 19, 2008. Check the license (Texas P5275, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Duncan Aesctun Friedman
- Credential
- M.D.
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- P5275 TX
Self-reported in NPPES; status is on the state search - Practice location
- 622 Isom RD, San Antonio, TX 78216
- Phone
- (210) 880-3000
- Enumerated
- Jun 19, 2008
- Record last updated
- May 1, 2026
- Fax
- (210) 227-6056
- Medicare enrollment
- Enrolled (PECOS I20130709000138); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 2007
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 107 in Texas → Look up another NPI →
Also registered at 622 Isom RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tabitha Castillo, DPTPhysical Therapist1205517596
- John Hogg, MDDiagnostic Radiology Physician1407850209
- Josue Medina, MDPhlebology Physician1437311321
- Thomas Oei, MDRetina Specialist (Ophthalmology) Physician1861468530
- Brenda Villarreal, FNP-CNurse Practitioner1427767797
Verify Duncan Aesctun Friedman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P5275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% more Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
828 Medicare Part D claims for 256 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Latanoprost268 claims
- Timolol Maleate136 claims
- Neomycin-Polymyxin-Dexameth96 claims
- Dorzolamide-Timolol57 claims
- Ketorolac Tromethamine38 claims
- Brimonidine Tartrate35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,415.40
28 payments; by number, the most common kind was food and beverage; the largest payer was Genentech USA, Inc. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Duncan Aesctun Friedman among 107 retina specialist (ophthalmology) physician records in Texas
Duncan Aesctun Friedman, M.D. is one of 107 retina specialist (ophthalmology) physician records with a practice address in Texas. 96% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 48% newer
- In a Medicare fileYes · 96% of these records are
- In the CMS Doctors and Clinicians fileYes · 90% of these records are
- Graduated2007 · median 2006 among the 96 with a school on file
- Record last updated2026 · 30% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in Texas
There are 107 retina specialist (ophthalmology) physician records in Texas.
All 107 in Texas → Every provider in San Antonio → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Thomas Oei, MDSan Antonio, TX 782161861468530
- Dianne BarrettSan Antonio, TX 782151669850335
- Malvin Driver, M.D.San Antonio, TX 782131609800127
- Sepehr Bahadorani, MDSan Antonio, TX 782071306227335
- Michael Harrell, MDSan Antonio, TX 782071689092660
- Abumere Akinwale, MDSan Antonio, TX 782291083871818
- Corrina Azarcon, MDSan Antonio, TX 782291740031624
- Mehdi Emamverdi, M.D.San Antonio, TX 782291578361812
Common questions
What is Duncan Aesctun Friedman, M.D.'s NPI number?
Duncan Aesctun Friedman, M.D.'s National Provider Identifier (NPI) is 1457512725, issued on Jun 19, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Duncan Aesctun Friedman, M.D. located?
The NPPES record lists a practice address at 622 Isom RD, San Antonio, TX, 78216. Phone: (210) 880-3000. Providers update this record themselves, so call before visiting.
How can I verify Duncan Aesctun Friedman, M.D.'s license?
NPPES lists Texas license number P5275, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Duncan Aesctun Friedman, M.D. prescribe under Medicare Part D?
In 2024, Duncan Aesctun Friedman, M.D. had 828 Medicare Part D claims for 256 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Duncan Aesctun Friedman, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.