Summary

Dr. Ohollaren graduated from the Oregon Health & Science University School of Medicine in 1980. He works in Portland, OR and 1 other location and specializes in Allergy & Immunology and Internal Medicine. Dr. Ohollaren is affiliated with Oregon Health And Science University Hospital.

Quick Facts

  • 3.8
  • 46 years of experience
  • Oregon Health & Science University School Of Medicine
  • 2 specialties
  • 13 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Male

Office Locations

Dr. Mark Thomas Ohollaren has 2 locations

Oregon Health And Science University Hospital

3181 Sw Sam Jackson Park RdPortland, OR 97239

Allergy Clinic

511 SW 10th Ave Ste 1301Portland, OR 97205

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Dr. Mark Thomas Ohollaren, MDColumbia AllergyDr. Jennifer Christine Thompson, MDDr. Ryan Jeffrey Fink, MD
Allergy & ImmunologyAllergy & ImmunologyHospital MedicineAnesthesiology
Accepts New Patients Accepts New Patients
3.8 
46 Years of Experience 22 Years of Experience 19 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English
Portland , ORFremont , CASeattle , WAPortland , OR
Med School: Oregon Health & Science University School Of Medicine Med School: David Geffen School Of Medicine At Ucla Med School: University Of Michigan Medical School
Current Profile
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Insurance Plans Accepted by Dr. Mark Thomas Ohollaren

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Mark Thomas Ohollaren has the following 2 specialties

Specialty Expertise

Dr. Mark Thomas Ohollaren has the following 13 areas of expertise

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

Certifications, License, & Education

46 Years Experience

EDUCATION & TRAINING

Medical School

Oregon Health & Science University School Of MedicineGraduated in 1980

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Frequently Asked Questions

Is Dr. Mark Ohollaren accepting new patients?
Dr. Mark Ohollaren has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Mark Ohollaren?
You can find contact information for Dr. Mark Ohollaren here on Vitals.
Does Dr. Mark Ohollaren accept my insurance?
You can see the insurance plans that Dr. Mark Ohollaren accepts on their Vitals profile.
Does Dr. Mark Ohollaren accept virtual/telehealth appointments?
Dr. Mark Ohollaren has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. Mark Ohollaren affiliated with?
Dr. Mark Ohollaren is affiliated with Oregon Health And Science University Hospital.

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