Are you a healthcare professional?

Dr. Mark O'Hollaren, MD

Allergy & Immunology*MaleAge 69

Allergy & Immunology*

Dr. Mark O'Hollaren, MD is an allergy & immunology specialist in Portland, OR and has over 43 years of experience in the medical field. He graduated from Oregon Health & Science University in 1980.

Dr. Mark O'Hollaren, MD

Practice

3181 SW Sam Jackson Park Rd Portland, OR 97239
ADVERTISEMENT

Get better prescription prices

Optum Perks and Healthgrades are subsidiaries of RVO Health.

Experience and Background Checks

Search for experience in a specific area

Background Check

Healthgrades does not collect malpractice claims information for
Background check information is undergoing a refresh. Please check back later.
Learn more about background checks

*The information displayed here is sourced from independent information providers, such as state board websites, as of November 2023, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Insurance Check

Search for your insurance carrier and choose your plan type

Dr. O'Hollaren's Reviews

Likelihood to recommend Dr. O'Hollaren

5.0

1 rating, 1 with written review
5 Star
100%
100%
4 Star
0%
0%
3 Star
0%
0%
2 Star
0%
0%
1 Star
0%
0%
What went well
No reviews yet
What could be improved
No reviews yet

Your trust is our top concern.

We strive to keep the reviews trustworthy, honest & fair.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

Reply
What went well
  • 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
×Post a ResponseAre you Dr. Mark O'Hollaren, MD?

Leave a review

How was your experience with Dr. O'Hollaren?

About Me

Biography

Dr. Mark O'Hollaren, MD is an Allergy & Immunology Specialist in Portland, OR and has over 43 years of experience in the medical field. He graduated from Oregon Health & Science University in 1980.

Specialties*

  • 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.

Board Certifications

American Board of Medical Specialties®
American Board of Allergy & Immunology®
Allergy & Immunology
American Board of Internal Medicine®
Internal Medicine

Oregon Health & Science University

Medical School, 1980

Common Questions and Answers

    Please call the office to learn more. (503) 494-1204

    What is the best way to schedule an appointment with Dr. Mark O'Hollaren, MD?

    View contact information to make an appointment.

    Can I use my insurance at Dr. Mark O'Hollaren, MD?

    Dr. Mark O'Hollaren, MD accepts various insurance plans. You can easily check if your insurance provider is accepted by using the Healthgrades insurance check. We recommend verifying your insurance coverage before scheduling an appointment to ensure a seamless experience.

    What is Dr. Mark O'Hollaren, MD's office address?

    Dr. O'Hollaren's office is located at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. You can find other locations and directions on Healthgrades.

    Focus on Nasal Polyps

    Locations

    Practice

    Ohsu Hospital3181 SW Sam Jackson Park Rd Portland, OR 97239
    1