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

John C Leatherman, MD

Individual provider Internal Medicine Physician · NPI 1295779460

John C Leatherman, MD is an Internal Medicine Physician in Ramona, Oklahoma. Licensed in Oklahoma. Registered with an NPI since 2006.

Licensed in
OK
In the registry since
2006
Specialties on file
2
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

400 Wyandotte Pl
Ramona, OK 74061-3678
Phone: (918) 287-1310
Fax: (918) 287-1727
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 17649 (OK)
Internal Medicine Physician Taxonomy 207R00000X · Licence 17649 (OK)

Record details

NPI number1295779460
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2006
Last updated in NPPESMarch 6, 2020
Certification dateMarch 6, 2020
Mailing addressPo Box 420, Ramona, OK 74061-0420