Dr. John O Connor MD

Colorectal Surgeons (Proctologists) in Rockville, MD

2.5  Fair based on 3 reviews | Rate Dr. O Connor

Dr. O Connor has been compared

416 times

Dr. John O Connor specializes in colorectal surgery (formerly proctology), general surgery in Rockville, Maryland.

Dr. John O Connor has been compared 416 times. Details of Dr. O Connor's 49 years experience as an MD, his 2 hospital affiliations and education at State University of New York at Buffalo are available on your free doctor report.


Primary Location for Dr. O Connor

Dr. John O Connor
11125 Rockville Pike
Suite 308
Rockville, MD 20852
North Bethesda

Patient Ratings and Reviews


Dr. John O Connor has an average rating of 2.5 stars (out of 5) with a rating of Fair based on 3 reviews.

Have you visited Dr. John O Connor? Rate you experience below.


 Board Certification, Specialty and Expertise

Dr. John O Connor has been identified as specializing in Colorectal Surgery (formerly Proctology) and General Surgery.

Accepted Insurance

Insurance plans and networks accepted by a doctor are not necessarily universal across all locations at which the doctor practices. This can be affected by many factors such as different group practices, hospital affiliations and working arrangements at those locations. Checking that the doctor you are visiting and the facility they are at are in-network providers for your insurance plan can save you money and headaches later from surprise medical bills.

Dr. John O Connor accepts the following plans at 11125 Rockville Pike, Rockville, MD

  • Humana
  • Cigna
  • Great-West Healthcare
  • Evercare

See additional insurance networks accepted by Dr. O Connor

 Hospital Affiliation

A hospital affiliation covers any doctor who has an affiliation, association or admitting privilege with a hospital. A doctor's particular affiliation to a specific hospital can translate to the overall quality of that provider.


Dr. O Connor attended medical school at State University of New York at Buffalo School of Medicine and Biomedical Sciences and graduated in 1966 having 49 years experience.

While there is no proven correlation between the quality of one's educational institution and the quality of one's professional competence, it is often an indicator. Medical schools have various levels of selectivity (some are harder to get into than others), and both the quality of their clinical training and level of research are measured. Additional medical training in both residency and fellowships and the facilities they are conducted at also provide a history of the doctors' level of training and experience.


Patients may also know Dr. John O Connor MD as:

  • General Surgery, Colorectal Surgery (formerly Proctology)

    9715 Medical Center Dr, Suite 233 Rockville, MD 20850

    • General Info
    • Years Experience
      22 Years Experience
    • Accepted Insurance
      Great-West Healthcare
      see more…
    • Hospital Affiliation
      Adventist Rehabilitation Hospital Of Maryland
      Rockville, Maryland
    • Education
      Cornell University
    • Gender


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