Skip to main content
John Heffernan, DO, Internal Medicine, Walla Walla, WA

John Casey Heffernan DO


Primary Care Physician

Join to View Full Profile
  • 380 Chase AveWalla Walla, WA 99362

  • Phone+1 509-897-5836

  • Fax+1 509-897-5743

Dr. Heffernan 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.

Education & Training

  • Hackensack University Medical Center (Palisades)
    Hackensack University Medical Center (Palisades)Residency, Internal Medicine, 2017 - 2020
  • Edward Via Virginia College of Osteopathic Medicine
    Edward Via Virginia College of Osteopathic MedicineClass of 2017

Certifications & Licensure

  • CA State Medical License
    CA State License 2022 - 2026
  • NJ State Medical License
    NJ State License 2020 - 2025
  • OR State Medical License
    OR State License 2024 - 2025
  • WA State Medical License
    WA State License 2023 - 2025

Professional Memberships

Other Languages

  • Spanish

Viewing the full profile is available to verified healthcare professionals only.

Find your profile and take control of your online presence: