Dr. John Ahn, D.O.

john ahn do Dr. Ahn was born in Seoul, South Korea and immigrated to the United States in his early teens. He is a graduate of Colgate University in New York, and completed his medical degree from New York Institute of Technology/ New York College of Osteopathic Medicine. Dr. Ahn completed internal medicine training and gastroenterology fellowship training in Long Island Jewish Medical Center in New York and subsequently finished one additional year of advanced therapeutic endoscopy fellowship at Allegheny General Hospital in Pittsburgh. Dr. Ahn is board certified in Gastroenterology by the American Board of Internal Medicine and also certified in Board of Osteopathic Medical Examiners. Furthermore, he is also trained in acupuncture and alternative medicine. Dr. Ahn is currently interested in integrating his holistic training background and advanced technical therapeutic endoscopy skills in conjunction with alternative medicine to treat his patients. Dr. Ahn has been in practice for over 20 years and he prizes commitment to quality and aims to provide compassionate patient centered care.

General Gastroenterology and Weight Loss
Advanced Endoscopic Retrograde Cholangiopancreatography (ERCP)
Endoscopic Ultrasonography (EUS)
Acupuncture & Related Complementary Treatment


Allegheny Hospital in Pittsburgh
Long Island Jewish Medical Center
New York College of Osteopathic Medicine

Morton Plant Hospital
Mease Countryside Hospital
Mease Dunedin Hospital

Countryside Surgery Center
North Pinellas Surgery Center

1840 Mease Drive
Suite 305
Safety Harbor, FL 34695

Phone: (727) 796-4166

Web Links
Coming Soon

What Patients Are Saying

“Had an excellent experience with Dr. Ahn’s office from the moment I walked in till the time I walked out. Dr. Ahn is very kind compassionate listens to what you have to say. Did not feel rushed. Would recommend my family and friends to schedule an appointment with Dr. Ahn.”
- Anonymous’ 2021 Patient Survey Comment

“This was my first time to see Dr. Ahn, but I was impressed by him and his staff. They were all professional and courteous, and seemed genuinely concerned about my well-being. I will be returning.”
- Crosby’s 2020 Healthgrades Review

“I have been seeing Dr. Ahn for 20 years. He has the best bed side manor that I have ever seen from a Doctor. He is always professional, and curious. I trust him totally which I never do. I would drive 2 hours if I had to. It’s very hard to find wonderful Doctors that truly care. His staff has been with him for 20 years that says something. Great management in an office is a happy office.”
- Garofalo’s 2020 Google Review

“Dr. Ahn provides excellent care starting with a detailed consult, performing procedures, post procedure consults and after care follow-up visit. I refer all my family and friends to Dr. Ahn. Everyone in his office is so friendly and helpful. I have the utmost confidence in Dr. Ahn.”
- Downing’s 2020 Healthgrades Review