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John Callaghan, MD, Internal Medicine, Indianapolis, IN, Richard L. Roudebush Veterans Affairs Medical Center


Internal Medicine Indianapolis, IN

Associate Professor, Medicine, Indiana University School of Medicine

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Education & Training

  • University of Minnesota Medical School
    University of Minnesota Medical SchoolResidency, Internal Medicine, 1971 - 1971
  • University of Minnesota Medical School
    University of Minnesota Medical SchoolInternship, Internal Medicine, 1969 - 1970
  • University of Kentucky College of Medicine
    University of Kentucky College of MedicineClass of 1969

Certifications & Licensure

  • IN State Medical License
    IN State Medical License 1979 - 2023
  • MN State Medical License
    MN State Medical License 1972 - 2022
  • American Board of Internal Medicine Internal Medicine

Publications & Presentations


Journal Articles

  • Pharmacogenetic Testing in the Veterans Health Administration (VHA): Policy Recommendations from the VHA Clinical Pharmacogenetics Subcommittee  
    Jason L Vassy, Steven A Schichman, John T Callaghan, Nature

Hospital Affiliations