Browse Health
Gastroenterologist (digestive)
24 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (13)

The overall average patient rating of Dr. John Ahn is Good. Dr. Ahn has been reviewed by 52 patients who have provided 13 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.8
Promptness 4.3
Courteous Staff 4.8
Accurate Diagnosis 4.7
Bedside Manner 4.7
Spends Time with Me 4.9
Follows Up After Visit 5.0

Specialties & Research

Dr. John Ahn, DO is board certified in Gastroenterology.

  • He has special expertise in 7 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Colonoscopy
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Sigmoidoscopy
  • Ulcerative Colitis

Education & Awards

Dr. Ahn graduated from New York Institute of Technology, Old Westbury. He has 2 awards.

Compassionate Doctor Recognition (2012 - 2013, 2015)
On-Time Doctor Award (2015)


Dr. Ahn has 7 hospital affiliations:

  • Mease Countryside Hospital 
  • Largo Medical Center 


  • Korean

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Additional Information
Dr. John H Ahn DO is a male Internist, has 24 years of experience and practices in Gastroenterology.
Where does Dr. John H. Ahn practice?
Dr. John Ahn has 1 office location.
Dr. John Ahn practices Gastroenterology near Safety Harbor, FL.
See Safety Harbor Gastroenterologists.