Internist, Hematology Specialist
38 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Joseph Holahan is Excellent. Dr. Holahan has been reviewed by 1 patients who have provided 0 comments. The rating is 5 out of 5 stars.

Specialties & Research

Dr. Joseph Holahan, MD is board certified in Internal Medicine and Hematology.

  • He has special expertise in 11 areas:
  • Acute Myeloid Leukemia
  • Anemia
  • Chronic B-Cell Lymphocytic Leukemia
  • Deep Vein Thrombosis
  • Hepatitis C
  • Leukemia
  • Lymphoma
  • Multiple Myeloma (Cancer of Plasma Cells)
  • Myelodysplastic Syndromes
  • Myeloid Leukemia
  • Myeloproliferative Disorders

Education & Awards

Dr. Holahan graduated from University of Florida, Gainesville. He has 1 awards.

Castle Connolly's Top Doctors™ (2013)


Dr. Holahan has 15 hospital affiliations:

  • Texas Heart Hospital 
  • Northeast Baptist Hospital 


  • Spanish
  • English

> > > > Dr. Joseph Holahan, MD

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Additional Information
Dr. Joseph R Holahan MD is a male Internist, has 38 years of experience and practices in Internal Medicine and Hematology.
Where does Dr. Joseph R. Holahan practice?
Dr. Joseph Holahan has 6 office locations.
Dr. Joseph Holahan practices Internal Medicine and Hematology near San Antonio, TX.
Additional practice locations include: Boerne, TX.
See San Antonio Internists and San Antonio Hematologists.