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

Dr. Joseph R. Holahan, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1114942414

Dr. Joseph R. Holahan, MD is a Hematology (Internal Medicine) Physician in San Antonio, Texas. Licensed in Texas. Registered with an NPI since 2006.

Licensed in
TX
In the registry since
2006
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

4383 Medical Dr
San Antonio, TX 78229-3307
Phone: (210) 593-5700
Fax: (210) 593-5998
Show map & directions

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

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence E9236 (TX)

Record details

NPI number1114942414
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 13, 2006
Last updated in NPPESFebruary 14, 2020
Certification dateFebruary 14, 2020

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