Skip to main content
Gianna O'Hara, DO, Internal Medicine, Pomona, CA

GiannaO'HaraDO

Internal Medicine Pomona, CA

Geriatric Medicine

Director of Geriatric Medicine

Dr. O'Hara is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
  • Connect with colleagues in the same hospital or clinic.
  • Read the latest clinical news, personalized to your specialty.

See Dr. O'Hara's full profile

Already have an account?

  • Office

    1770 N Orange Grove Ave
    Ste 101
    Pomona, CA 91767
    Phone+1 909-469-9494
    Fax+1 909-469-2120

Education & Training

  • University of Washington
    University of WashingtonFellowship, Geriatric Medicine (Internal Medicine), 2020 - 2021
  • University of Arizona College of Medicine-Tucson
    University of Arizona College of Medicine-TucsonResidency, Internal Medicine, 2017 - 2020
  • College of Osteopathic Medicine of the Pacific
    College of Osteopathic Medicine of the PacificClass of 2017
  • College of Osteopathic Medicine of the Pacific
    College of Osteopathic Medicine of the PacificClass of 2017

Certifications & Licensure

  • CA State Medical License
    CA State License 2020 - 2025
  • OR State Medical License
    OR State License 2024 - 2025
  • WA State Medical License
    WA State License 2020 - 2021
  • AZ State Medical License
    AZ State License 2017 - 2020
  • American Board of Internal Medicine Internal Medicine
  • American Board of Internal Medicine Geriatric Medicine