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
Mailing address8800 Tall Oaks Dr, Guthrie, OK 73044-6139