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Dr. John McCahan, MD

Dr. John McCahan, MD

Age 56 Internal Medicine M
Star rating icon (17) 17 reviews
Accepting New Patients


Dr. John McCahan, MD is a internal medicine specialist in Westborough, MA. He currently practices at UMass Memorial Medical Group and is affiliated with Marlborough Hospital. He accepts multiple insurance plans. Dr. McCahan is board certified in Internal Medicine.


  • Baystate Med Center, Internship Hospital

Insurance Accepted

  • Aetna
  • Anthem
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Massachusetts
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • First Health (Coventry Health Care)
  • Harvard Pilgrim Health Care
  • MultiPlan
  • Tufts Health Plan

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Had Dr McCahan as my primary care physician for several years while in Massachusetts. I've now been in Florida for 6 years and come to realize how fortunate I was to have him. Steady, professional and personable.
JWK — Jul 31, 2021
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Photo: Dr. John McCahan, MD
Dr. John McCahan, MD
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Frequently Asked Questions

Dr. McCahan frequently treats Sinus Tachycardia, Irritable Bowel Syndrome, and Electrocardiogram (EKG).  

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Hospital Affiliations

  • Marlborough Hospital
  • Umass Memorial Medical Center


  1. UMass Memorial Medical Group

    1. 1
      Umass Memorial Medical Group Westboro
      33 E Main St, Westborough, MA 1581 (508) 836-4884