Skip to main content
Mark O'Hollaren, MD, Allergy & Immunology, Portland, OR, Providence St. Vincent Medical Center

MarkThomasO'HollarenMD

Allergy & Immunology Portland, OR

Asthma & Allergic Conditions

Associate Professor, Medicine, Oregon Health and Science University School of Medicine

Dr. O'Hollaren is on Doximity

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

  • Connect with other colleagues in the same hospital or clinic
  • Search all U.S. specialist profiles and refer a patient
  • Read the latest clinical news and earn CME/CEU credits

See Dr. O'Hollaren's full profile

Already have an account?

Education & Training

  • Mayo Clinic College of Medicine and Science (Rochester)
    Mayo Clinic College of Medicine and Science (Rochester)Fellowship, Allergy and Immunology, 1984 - 1986
  • Stanford Health Care-Sponsored Stanford University
    Stanford Health Care-Sponsored Stanford UniversityResidency, Internal Medicine, 1980 - 1983
  • Oregon Health and Science University School of Medicine
    Oregon Health and Science University School of MedicineClass of 1980

Certifications & Licensure

  • OR State Medical License
    OR State Medical License 1983 - 2025
  • WA State Medical License
    WA State Medical License 1986 - 2008
  • MN State Medical License
    MN State Medical License 1984 - 1987
  • WI State Medical License
    WI State Medical License 1984 - 1985
  • American Board of Allergy and Immunology Allergy & Immunology
  • American Board of Internal Medicine Internal Medicine

Awards, Honors, & Recognition

  • Top MD Consumers Checkbook

Publications & Presentations

PubMed

Press Mentions

  • Staffing Emergency Departments Across Oregon
    Staffing Emergency Departments Across OregonFebruary 21st, 2019

Hospital Affiliations