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Dr. Mark O'Hollaren, MD

Dr. Mark O'Hollaren, MD

Internal Medicine*
40+ years of experience

Dr. Mark O'Hollaren, MD is an internist in Portland, OR and has over 40 years of experience in the medical field. He graduated from Oregon Health & Science University in 1980.

5 Star Rating
Based on 1 review 5 Star Rating (1 review)

Practice

3181 SW Sam Jackson Park Rd Portland, OR 97239

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Dr. O'Hollaren's Reviews

Likelihood to recommend Dr. O'Hollaren

5.0
1 rating, 1 with written review
5 star
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Excellent Physician and Immunologist. Extremely well trained and one of the best Physicians in the area. Great bed side manner with excellent diagnostic skills and treatments. I would highly recommend Dr. O'Hollaren MD to patients seeking a physician who is very well trained, compassionate and has Excellent Diagnostic skills and treatments. He is one of the top physicians in his Specialty.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
MICHAEL GRAEFF – Nov 12, 2020
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About Me

biography

Dr. Mark O'Hollaren, MD is an internist in Portland, OR and has over 40 years of experience in the medical field. He graduated from Oregon Health & Science University in 1980.
  • Internal Medicine

  • Allergy & Immunology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Oregon Health & Science University

    Medical School, 1980
American Board of Medical Specialties®
American Board of Allergy & Immunology®
Allergy & Immunology
American Board of Internal Medicine®
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

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Locations

Practice

Oregon Health & Science University3181 SW Sam Jackson Park Rd Portland, OR 97239
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