Procedures and Conditions I Treat

  • Dizziness
  • Vestibular Diseases
  • Arnold-Chiari Malformation
  • Labyrinthitis
  • Neurotology
  • Meniere Disease
  • Vertigo
  • Vestibular Neuronitis
  • Migraine Disorders

Locations Where I Practice

Please note: Not all physicians schedule patients at each listed location. Please call the “Schedule an appointment” number shown above for scheduling assistance.

Education and Training

Education History

Medical School

University of Texas Medical Branch, Galveston, TX
9/1/1982 - 5/31/1986


St. Elizabeth's Medical Center, Boston, MA

6/1/1986 - 6/30/1987


University of Texas Medical Branch, Galveston, TX

7/1/1987 - 6/30/1990


UCLA Medical Center, Los Angeles, CA

7/1/1990 - 6/30/1992

Board Certification

American Board of Psychiatry & Neurology (Subspecialty: Neurology)

Academic Information

My Department



The overall patient satisfaction rating is an average of all patient responses to the six doctor communication related questions shown below from the Clinician and Group Consumer Assessment of Healthcare Providers and Systems survey. For additional information about the patient satisfaction survey, please visit our Patient Satisfaction Survey page.

The comments are submitted by patients and reflect their view and opinions. The comments are not endorsed by and do not necessarily reflect the views of Ohio State Wexner Medical Center.

111 Patient Satisfaction Reviews

  • Overall
    4.1 out of 5
  • Explains Things Clearly
    4 out of 5
  • Listens Carefully
    4.1 out of 5
  • Gives Understandable Instructions
    4.1 out of 5
  • Knows My Medical History
    4.4 out of 5
  • Shows Respect
    4.2 out of 5
  • Time Spent Together
    4.7 out of 5
  • Reviewed on May 25, 2020

    very good.he was super informative and clear about the possibilities of my outcome or cause for my illness

  • Reviewed on Apr 08, 2020

    While sometimes insulting, he was very professional thorough, explained things well. I felt very confident in his diagnosis.

  • Reviewed on Mar 29, 2020

    detailed and seemed concerned about me

  • Reviewed on Mar 08, 2020

    Dr. Oas appeared to be very knowledgeable but talked too much about irrelevant matters, such as the minds of engineers and astronauts. In the end, he was rather dismissive of my medical condition and referred me to another specialist. I didn't get a straight answer to my condition until I read after-visit summary and saw a mention of ataxia. That prompted me to research the condition and decide what form of ataxia I probably have.

  • Reviewed on Mar 07, 2020

    Dr. Oas is an exceptionally knowledgable physician who diagnosed me after a decade of other doctors missing it. For that, I am tremendously grateful. His condescending manner of speaking was upsetting however. He did not care about my concerns nor did he let me talk. He expressed the uniqueness of my case to the medical student but continued to treat me as though I was stupid. I was a paramedic previously & would have given him a piece of my mind, had I not been desperate for his help. I suspect that he is well aware of having the upper hand, therefore doesn't mind belittling his patients. If another physician had his level of expertise, I would never see him again. But, I will continue because I have no choice if I want adequate care. To receive that care, the trade off is leaving feeling as though your an ignorant half-wit. He could also explain your diagnosis to you directly rather than the student. I grabbed bits and pieces through their conversations. I had to google the diagnosis to grasp a better understanding.

  • Reviewed on Mar 05, 2020

    I felt he was a very bad communicator. He corrected my answers, was very hard for me to talk to him. he cut me off mid sentence, was intimidating, I don't feel I can tellhim my concerns or clarify instructions.

  • Reviewed on Feb 20, 2020

    John Oas is the best, in his field. Hands down, for my problem. I was seen @ the best hospitals in PA and they couldn't do anything to help me! John Oas laid it on the line my problem & my OPTIONS and his knowledge was correct on my problem. His treatment works for me and I have a LIFE again. He's the best in his field!

  • Reviewed on Feb 15, 2020

    During the interview the doctor shot questions to me at a very rapid pace. If my response was hesitant or I tried to clarify a question he became impatient, irritated and sometimes rude. This behavior was almost intolerable, and I could see his recognition of my discomfort.

  • Reviewed on Feb 13, 2020

    FANTASTIC. My personal dr. set me up with this dr. I didn't realize I needed to go to a nurse dr. but I so glad I listened to my personal dr. I know after seeing Dr. Oas that I will be a healthier person doing what he has set up for me. I thought I was having problems because of being 74, but I learned I can not have these problems. I am going to do everything he has told me to do.

  • Reviewed on Feb 09, 2020

    Dr. Oas is brilliant and amazing. For the first time in my life I feel like a doctor listened to me. Ever since I was little I've had my vertigo and headaches kind of ignored by doctors, and through luck I somehow to Dr. Oas. At the end he showed me how much he wrote in my chart and told me that doctors wouldn't be able to say I'm lying anymore (that's what they said when I was a child) and I felt hope for the first time in so long. I got to my car and saw on my paperwork that I have a otoneurology team and I just started crying because I felt like someone finally listened to me and finally I was going to get help and start feeling better. So I owe Dr. Oas a million thank yous.

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Consulting and Related Relationships

At The Ohio State University Wexner Medical Center, we support a faculty member’s research and consulting in collaboration with medical device, research and/or drug companies because a faculty member’s expertise can guide important advancements in the practice of medicine and improve patient care. In order to provide effective management of these relationships, the University requires annual disclosures from all faculty members with external interests related to their University responsibilities.

As of 11/01/2020, Dr. Oas has reported no relationships with companies or entities.