
John Castor, MD
Primary Practice Location:
Westerville Office
430 Altair Parkway, Suite 110
Westerville, Ohio 43082
Dr. John Castor joined Ohio Gastroenterology Group, Inc. in 2011. He earned his medical degree from Case Western Reserve University. He completed his residency and fellowship at Duke University. During his time at Duke University, he also completed an Esophageal Motility fellowship at the University of North Carolina.
Professional Training:
- Duke University – Gastroenterology Fellowship, 2008 – 2011
- University of North Carolina – Esophageal Motility Fellowship, 2010
- Duke University – Internal Medicine Residency, 2005 – 2008
Education:
- Case Western Reserve University School of Medicine – MD, 2005
- Duke University – MHS, 2010
- Otterbein University – BA, 1997
Board Certifications:
- American Board of Internal Medicine, Gastroenterology, 2011 – present
- American Board of Internal Medicine, 2008 – present
Special Interests:
- Esophageal Manometry
- 24-hour pH Impedance
- Interpretation of BRAVO pH Studies
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PATIENTS

Phone: 614-754-5500
Scheduling: 614-754-5600
Billing: 614-457-4220
Medical Records: 614-754-5455
Hours of Operation: 8:00am – 4:30pm