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

Dr. John Thomas Gregg, MD

Individual provider Emergency Medicine Physician · NPI 1184605917

Dr. John Thomas Gregg, MD is an Emergency Medicine Physician in Alva, Oklahoma. Practices as a sole proprietor and works from 3 locations. Licensed in Oklahoma and Texas.

Licensed in
OK, TX
In the registry since
2005
Specialties on file
4
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 Partly verified

Some contact details are missing from the federal record.

Share Medical Ctr
Alva, OK 73717
Phone: (806) 346-1468
Show map & directions

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

Additional practice locations (2)

  • 8800 Tall Oaks Dr, Guthrie, OK 73044-6139 — (806) 348-1468
  • Perry Memorial Hospital, Perry, OK 73077 — (806) 346-1468

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 17854 (OK)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 17854 (OK)
Emergency Medicine Physician Taxonomy 207P00000X · Licence H5890 (TX)
Surgery Physician Taxonomy 208600000X · Licence H5890 (TX)

Record details

NPI number1184605917
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 9, 2005
Last updated in NPPESAugust 31, 2021
Certification dateJune 29, 2021