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Ronald Mathiasen, MD

Medical doctor (MD)
ENT (otolaryngology) (board certified)
Medical Group
Sharp Rees-Stealy

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Accepting new patients
Virtual visits available

Location and phone

  1. Sharp Rees-Stealy Scripps Ranch
    10670 Wexford St.
    Floor 1
    San Diego, CA 92131-3940
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    Fax: 858-621-4044

Care schedule


About Ronald Mathiasen, MD

I am a board-certified otolaryngologist - which is a head and neck surgeon. A Phi Beta Kappa graduate from UCLA with highest honors, I graduated with distinction from the UCSD School of Medicine in 1996. I had my "calling" at age five when my newborn sister was born with a congenital condition. I was so impressed with the care she received from her physicians, that I made a vow to become a doctor so I could help other people in the way the doctors helped my sister. I have authored several publications and have given many presentations in the field of otolaryngology. I have a special interest and expertise in thyroid and parathyroid surgery, endoscopic sinus surgery and nasal surgery, otologic microsurgery and facial plastic and reconstructive surgery. In my spare time, I race cars, travel extensively, attend musicals, concerts and cultural events and try to enjoy San Diego for all it has to offer.
In practice since:
English, Spanish
Cedars-Sinai Medical Center:
Kaiser Permanente Oakland Medical Center:
University of California, San Diego:
 Medical School
Hospital affiliation
Areas of focus
To confirm coverage for specific treatments and procedures, contact your physician or health plan.
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Insurance plans accepted

Ronald Mathiasen, MD, accepts 37 health insurance plans.

Ratings and reviews


180 ratings
Patient ratings
Explanations the care provider gave you about your problem or condition
Concern the care provider showed for your questions or worries
Care provider’s efforts to include you in decisions about your care
Likelihood of your recommending this care provider to others
Provider discussed treatment options
Patient reviews
Verified Patient
April 18, 2024


Dr. Mathieson was great.
Verified Patient
April 16, 2024


Dr. Mathiasen is a very good dr. Very empathetic.
Verified Patient
April 14, 2024


He didn't spend any time with me. I did not feel heard, so I stopped talking. I know he didn't believe me when I described my symptoms, because there was nothing on the scan, I knew he wouldn't. If a symptom is not screaming at them in the face you're a liar or at least that is the way it feels. No one is interested in helping me with this sinus issue. That is painfully clear. There was nothing for the Dr. Mathisen to operate on he had no interest in me. Plus his son was visiting so his focus certainly wasnt on me.
Verified Patient
April 14, 2024


Dr Mathiasen Is always extremely kind and caring and always explains to me in detail what my condition is and what procedure he's he's doing. HE'S THE BEST!!!!
Reviews are collected through nationally recognized Press Ganey patient satisfaction surveys. Learn more about ratings and reviews.


Special recognitions

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Guardian Angel recognitions
Ronald Mathiasen, MD, has received Guardian Angel recognitions from grateful patients and families. Have you and your family received exceptional care from Ronald Mathiasen, MD? Consider paying tribute with a Guardian Angel gift.

Featured in Sharp Health News

Ronald Mathiasen, MD, has been featured as a medical expert in Sharp Health News.
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