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

Dr. John Gilbert Oas, MD

Individual provider Neurology Physician · NPI 1336146638

Dr. John Gilbert Oas, MD is a Neurology Physician in Gahanna, Ohio. Licensed in Ohio. Registered with an NPI since 2005.

Licensed in
OH
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

920 N Hamilton Rd Ste 500
Gahanna, OH 43230-1757
Phone: (614) 293-4969
Fax: (614) 293-6111
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence 35.074548 (OH)

Record details

NPI number1336146638
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 30, 2005
Last updated in NPPESNovember 10, 2020
Certification dateNovember 10, 2020
Mailing address700 Ackerman Rd Ste 2120, Columbus, OH 43202-1559

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