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

John B Marlar, DO

Individual provider Emergency Medical Services (Emergency Medicine) Physician · NPI 1316923576

John B Marlar, DO is an Emergency Medicine in Holdenville, Oklahoma. Qualified in 1992, 34 years ago. Practices with Holdenville Hospital Authority, a 10-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
34
Licensed in
OK
In the registry since
2005
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

100 McDougal Dr
Holdenville, OK 74848-2899
Phone: (405) 379-4200
Show map & directions

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

Specialties & licences

Emergency Medical Services (Emergency Medicine) Physician (primary) Taxonomy 207PE0004X · Licence 3037 (OK)

Record details

NPI number1316923576
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedDecember 20, 2005
Last updated in NPPESAugust 13, 2021
Certification dateAugust 13, 2021
Mailing addressPo Box 17, Suite 100, Tulsa, OK 74101-0017

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Holdenville Hospital Authority — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount