Mercy Health Provider

Gregory R Johnston, DO

Bariatric Medicine, Bariatric Surgery, Colon and Rectal Surgery, General Surgery, Minimally Invasive General Surgery

4.9 out of 5

Accepting New Patients

Virtual Visits Available

Meet Gregory

As a native from of the Midwest I am proud to serve the northwest corner of Ohio in the Toledo region. My passion is Bariatric Surgery, where weight loss can help patients medically, but also improve their day to day lives. I also have great interest in Robotic and Minimally Invasive general surgery where we can improve patient outcomes in GERD treatments, hernia repair, cancer treatments and colon surgery.

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Insurances Accepted

Information is subject to change without notice. Please contact your insurance provider for confirmation.

  • Aetna
  • Anthem BlueCross Blue Shield Ohio
  • Buckeye Health Plan (Medicaid Ohio)
  • CareSource
  • Cigna
  • Communicare Advantage
  • Devoted Health
  • Frontpath
  • Health Alliance Plan of Michigan
  • HealthSmart
  • Immergrun, Inc
  • Lutheran Preferred
  • Medicaid Michigan
  • Medicaid Ohio
  • Medical Mutual of Ohio
  • Medicare Ohio
  • Medigold
  • Mercy Health Select, LLC
  • Meridian Health Plan of Michigan
  • Molina Healthcare of Michigan
  • Multiplan, Inc.
  • Ohio Health Choice
  • Ohio Health Group
  • Paramount
  • Parkview – Signature Care
  • Perennial Advantage
  • Quality Care Partners
  • RELIANCE Medicare Advantage
  • SummaCare Health Plan
  • The Health Plan
  • United Healthcare
  • Valor Health Plan
  • WellCare of Kentucky

Ratings & Reviews

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Overall Score

4.9 out of 5 104 ratings, 12 reviews

Patient Reviews

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March 2022
They are all very thoughtful and care about you and your situation!!!
January 2022
Great care
December 2021
Mercy has always been the best!
December 2021
Very happy with Dr. Johnson. He is an excellent caring doctor. The staff is great as well.
November 2021
Dr Johnston was fabulous, he didn't make me feel like just a number he was attentive and very personable
November 2021
Dr Johnston is by far the best doctor I've ever come across. His bedside manner is more than anyone can desire. He shows compassion and answers all of the questions you may have.
September 2021
Dr Johnston has the best bedside manner of any physician I've ever seen! He is very concerned for the health and well being of his patients.
August 2021
I saw Dr. Johnston for a post-op visit. This surgeon has saved my life, quite literally, three times. He's absolutely amazing. He's extremely professional but every once in awhile I'm able to get a little smile or chuckle. I wouldn't trust anyone else with an abdominal surgery.