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Gregory R Johnston, DO

  • General Surgery
  • Minimally Invasive General Surgery
  • Bariatric Surgery
  • Bariatric Medicine

Accepting New Patients

Virtual Visits Available

Mercy Health Physicians

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.

Places of Care

Insurances Accepted

Gregory R Johnston, DO, accepts a variety of health insurance types, including Medicare, commercial and Medicaid, to better serve our communities. To check if your insurance is accepted, search for your plan below. Please know this list is subject to change and it is always a good idea to confirm coverage and restrictions with your insurance provider before scheduling visits and procedures.

Ratings & Reviews

We support your choice for the best care and believe it's vital you have all the information when making an appointment. Understanding the Patient Satisfaction Rating is key. Learn about our survey process.

Overall Score

4.8 out of 5 178 ratings, 21 reviews

Patient Reviews

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July 2026
Dr Johnston is a Great guy! He listens and doesn't ever make you feel stupid. Explains everything very well. I really appreciate him AND his staff.
July 2026
Informed through conversation connections- not a list of facts as I've experienced with physicians in the past.
July 2026
EXCELLANT doctor
July 2026
I would recommend Dr Johnson to others. He was very patient and listened to me and wasn't in a hurry to get to the next patient. He had a good understanding of my problem and was very knowledgeable ...Show more
July 2026
I absolutely adore Dr. Johnston's passion and dedication to helping others. He is a good listener and is very encouraging and progress made. He is able to explain things at multi-levels, which I appre...Show more
June 2026
First time meeting doctor Johnson. He was very friendly and easy to talk to and trust. Great bedside manner
June 2026
My experience with doctor Johnson is that he's a trustworthy doctor, he gets right to the point about your health and explains every aspect of one's condition about the possibility of what is going on...Show more
May 2026
Nothing but good things to say about my experience!
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