Male 69 years


Dr. Mark T O'hollaren, MD



Allergy & Immunology   -  Oregon,  Portland

 Overview

Dr. Mark T O'hollaren, MD works in Portland, Oregon is a specialist in Allergy & Immunology, Internal Medicine and graduated Oregon Health And Science University School Of Medicine in 1980. Dr. O'hollaren is affiliated with Legacy Emanuel Hospital and practicing for 43 years

 Specialties

  • Allergy & Immunology
  • Internal Medicine

 Conditions

• Aspiration or Injection of Thyroid Cyst
• Cancer Treatment
• Cognitive Behavioral Therapy for Insomnia (CTB-I)
• COPD (Chronic Obstructive Pulmonary Disease)
• Device Implantation and Extraction
• Epilepsy, X - Linked - Learning Disabilities - Behavior Disorders
• Leber Hereditary Optic Neuropathy
• Lung Spirometry
• Primitive Reflex Integration
• Prism Lenses
  ...
• Vaginal Candidiasis
 more details

 Procedures

• Allergy Shots
• Allergy Skin Testing

 Board Certifications

  • Board Certified by the American Board of Allergy & Immunology

 Years Since Graduation

  • 43

 State License

  • Oregon

 Education & Training

Medical School

Oregon Health And Science University School Of Medicine

Portland, OR, United States

Graduated: 1980

 Awards

Awards for Dr. Mark T O'hollaren, MD are not present.

 Dr. O'hollaren Reviews

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 Office Locations


Primary location

 Allergy Clinic LLC
1130 North West 22ND Avenue Suite 1301
Oregon (OR)
Portland
97210
 Phone:(503) 222-1966

Accepting New Patients

  • Yes
* Please verify this information when scheduling an appointment.

 Map & Directions



Allergy Clinic LLC, 1130 North West 22ND Avenue Suite 1301, Portland, Oregon (OR), 97210




 Insurances Accepted (check insurance plans)

  • Aetna
  • Assurant Health
  • Blue Card PPO
  • Blue Cross Blue Shield
  • Choice Plus POS
  • Choice Plus POS II
  • Cigna
  • Cigna PPO
  • Commercial Insurance Company
  • Connect
  • First Choice Health
  • First Choice Health PPO
  • Great West Healthcare-Cigna PPO
  • Health Net
  • Health Plan of Oregon PPO
  • Heritage Plus
  • Heritage Signature
  • Humana
  • LifeWise
  • MedHealthInsurance
  • Medicare
  • Medicare Advantage PFFS
  • Medicare MCR
  • MultiPlan
  • MultiPlan PPO
  • Navigate HMO
  • Navigate POS
  • ODS Health Plan
  • Open Access Plus
  • Options PPO
  • PacifiCare HMO
  • Personal Option EPO
  • PHCS Network PPO
  • Preferred PPO
  • Premera Blue Cross
  • Providence Health Plans
  • Tricare
  • United Healthcare
  • UnitedHealthCare

* Please verify this information when scheduling an appointment.

 Blog Posts

Blog Posts for Dr. Mark T O'hollaren, MD are not present.

 Patients Questions

Patients questions for Dr. Mark T O'hollaren, MD are not present.

 Affiliated Hospitals


Legacy Emanuel Hospital photo


Legacy Emanuel Hospital

2801 North Gantenbein Avenue Oregon OR, Portland, 97227

Legacy Emanuel Hospital is a hospital located in Portland, OR. Procedures/Diagnosis costs are at the state average in 5 of 14 procedures. Length of Stay is at the state average in 1 of 14 procedures.



  •  Latest reviews for Allergy & Immunology specialists

  • Dr. C. is a pleasant, professional caring and fun doctor. Answered all my questions on a keep it simple level and explained everything. He took his time. I will refer them when needed. What a great group!
    07 February 2024
    (6)
  • He is the best if you need help with panic attacks. He fixed up my medication and I feel better.
    31 January 2024
    (40)
  • Dr. Jungblut and staff are all professional, fun, conscientious. Been going here for a long time. My children and grandchildren now see Dr. Jungblut too.
    24 January 2024
    (7)
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