Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
RYAN JOSEPH DUFF, MD
ActiveRYAN JOSEPH DUFF, MD is a Internal Medicine healthcare provider located in SAN ANTONIO, Texas. NPI 1043802929 is currently active in the NPPES registry. Verify at CMS.
Internal Medicine · SAN ANTONIO, TX
Registration Details
- NPI Number
- 1043802929
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Feb 11, 2021 (5.5125701858662 yrs)
- Last Updated
- Oct 20, 2025
- Licenses
-
2022041862 (MO)2022041862 (MO)
Practice Information
- Address
-
3551 ROGER BROOKE DRSAN ANTONIO, TX, 782344504Browse TX providers · Browse ZIP 78234
- Phone
- 2109162153
- Fax
- 2109160709
- Primary Specialty
-
Internal Medicine
207R00000X
- Additional Specialty
- General Practice
Other Internal Medicine Providers in SAN ANTONIO, TX
| Name | Credential | NPI |
|---|---|---|
| DR. FEDERICO ROMAN NG | MD | 1528061488 |
| JAMES LEE VOSBERG | MD | 1235132747 |
| DR. SHANKAR C SANKA | M.D. | 1851395495 |
| DR. HUGO CASTANEDA | M.D. | 1730183179 |
| JEREMIAS M. ABUEME | M.D. | 1891790960 |
| DR. ROBERT GREEN NOBLES III | M.D. | 1467457937 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.