The Vitals website is provided for your informational use only. Nothing contained or offered by, on or through Vitals should be construed as medical advice or relied upon for medical diagnosis or treatment. Vitals does not recommend or endorse any particular healthcare provider whose information or ratings appear on this website. We encourage you to read our full Terms of Service.

Dr. Mark T Ohollaren Is this you?

About Dr. Mark T Ohollaren

Dr. Mark T Ohollaren, MD is a Doctor primarily located in Portland, OR, with another office in Portland, OR. His specialties include Allergy & Immunology. He speaks English.

Rating Overview

5 Ratings

The overall average patient rating of Dr. Mark T Ohollaren is Great. Dr. Mark T Ohollaren has been rated by 5 patients. From those 5 patients 0 of those left a comment along with their rating. The overall rating for Dr. Mark T Ohollaren is 3.7 of 5.0 stars.

Mapbox Map of Dr. Mark T Ohollaren

Primary Address

Ohsu Hospitals And Clinics

3181 SW Sam Jackson Park Rd
Portland, OR 97239
Get Directions

Mapbox Map of Dr. Mark T Ohollaren

Allergy Clinic

511 SW 10th Ave Ste 1301
Portland, OR 97205
Get Directions


Dr. Mark T Ohollaren has the following 1 specialty

  • Allergy & Immunology
  • Expertise

    12 Expertise

  • Asthma
  • Hay Fever
  • Sinusitis
  • Rash
  • Allergies
  • Hay Fever (Seasonal Allergic Rhinitis)
  • Food Allergies
  • Nasal Allergy (Rhinitis)
  • Itching
  • Watery Eyes
  • Desensitization
  • Nasal Allergies


Showing 5 of 5

One Star
Five Stars
Five Stars
Two Stars
Five Stars
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
  • Accepted Insurance

    Dr. Mark T Ohollaren accepts the following insurance providers.

  • Aetna
    • Aetna Choice POS II
    • Aetna Signature Administrators PPO
  • First Health
    • First Health PPO
  • Multiplan
    • Multiplan PPO
  • UHC West
    • UHC West SignatureValue HMO
  • View by Location

Locations & Directions

  • Nearby Doctors

    Dr. Mark T Ohollaren is similar to the following 3 Doctors near Portland, OR.