Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Matthew Castor, MD

Individual provider Gastroenterology Physician · NPI 1093987257

John Matthew Castor, MD is a Gastroenterology in Columbus, Ohio. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2005, 21 years ago. Practices with Ohio Gastroenterology Group, Inc, a 117-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Ohio.

Years since qualifying
21
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
OH
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3400 Olentangy River Rd
Columbus, OH 43202-1523
Phone: (614) 754-5500
Fax: (614) 457-9519
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 35097145 (OH)

Record details

NPI number1093987257
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 27, 2008
Last updated in NPPESNovember 2, 2023
Certification dateNovember 2, 2023
Mailing address3400 Olentangy River Rd, Columbus, OH 43202-1523

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 2005 (21 years in practice)
Group practice Ohio Gastroenterology Group, Inc. — 117 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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