Gregory R Johnston, DO | Bariatric Medicine | Mercy Health - Weight Management Solutions and Surgical Specialties
Mercy Health Provider

Gregory R Johnston, DO

Bariatric Medicine, Bariatric Surgery, General Surgery, Minimally Invasive General Surgery

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.

Find Locations Near You

Insurances Accepted

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

  • Aetna Better Health OH
  • Aetna Commercial & Aetna Medicare OH
  • Aetna Medicare Advantage ACO OH
  • Aetna Whole Health ACO OH
  • Align Senior Care OH
  • AmeriHealth Caritas Medicaid OH
  • Anthem KY & OH
  • Buckeye Health Plan OH
  • CareSource OH
  • Cigna Healthspring Medicare Advantage OH
  • Cigna OH
  • CIN-MHS NON-MSSP
  • CommuniCare Medicare Advantage OH
  • Devoted Health Medicare Advantage OH
  • Frontpath Health Coalition OH
  • Health Alliance Plan of Michigan
  • HealthSmart OH
  • Humana OH
  • Immergrun OH
  • Lutheran Preferred OH
  • McLaren Health Plan OH
  • Medicaid MI
  • Medicaid OH
  • Medical Mutual of Ohio
  • Medicare OH
  • Medigold OH
  • Molina Healthcare MI
  • Molina Medicare & Medicaid OH
  • Multiplan OH
  • Ohio Health Choice
  • Ohio Healthy
  • Paramount Elite Medicare Advantage OH
  • Parkview-Signature One OH
  • Payer Provider
  • Perennial Medicare Advantage OH
  • Quality Care Partners PPO OH
  • SummaCare OH
  • The Health Plan OH
  • TRICARE Prime-Humana Military KY & OH
  • United Healthcare OH
  • Valor Health Plan OH
  • Wellcare Meridian MI

Ratings & Reviews

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Overall Score

4.8 out of 5 139 ratings, 17 reviews

Patient Reviews

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January 2024
Loved it!
January 2024
Dr Johnston is excellent. He doesn't make you feel rushed, he takes the time to explain everything and answer any questions you may have. I highly recommend Dr. I feel wonderful and I follow what the Dr says and I am seeing great results.
December 2023
Dr. Johnston listens to concerns and answers questions. I have appreciated being under his care and would highly recommend him from a surgical standpoint.
November 2023
Dr. Johnston is the absolute best!!
October 2023
Excellent staff and doctor. Office is sun very efficiently, I have recommended several people to Mercy Health because of the positive experience I have had with Dr. Johnston and staff.
October 2023
Dr Johnston and all of his staff are absolutely amazing. I highly recommend them to anyone considering surgery
September 2023
Took time with me to make sure I understood the options I had
September 2023
I was very satisfied with this new doctor. He made me feel at ease and listened to every thing I had to say.