Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ryan Joseph Duff, MD

Individual provider General Practice Physician · NPI 1043802929

Ryan Joseph Duff, MD is a General Practice Physician in San Antonio, Texas. Licensed in Missouri. Registered with an NPI since 2021.

Licensed in
MO
In the registry since
2021
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3551 Roger Brooke Dr
San Antonio, TX 78234-4504
Phone: (210) 916-2153
Fax: (210) 916-0709
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2022041862 (MO)
General Practice Physician Taxonomy 208D00000X · Licence 2022041862 (MO)

Record details

NPI number1043802929
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 11, 2021
Last updated in NPPESJune 19, 2026
Certification dateJune 19, 2026
Mailing address3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234-4504

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