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

John Josiah Harrison, DO

Individual provider Emergency Medicine Physician · NPI 1386630499

John Josiah Harrison, DO is an Emergency Medicine in Duncan, Oklahoma. Graduated from Oklahoma State University College of Osteopathic Medicine in 1999, 27 years ago. Practices with Healthcare Express, LLP, a 69-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
27
Trained at
Oklahoma State University College of Osteopathic Medicine
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

1407 N Whisenant Dr
Duncan, OK 73533-1650
Phone: (580) 251-8458
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 3914 (OK)

Record details

NPI number1386630499
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedSeptember 23, 2005
Last updated in NPPESJanuary 16, 2024
Certification dateJanuary 11, 2024
Mailing addressPo Box 408, Lindsay, OK 73052-0408

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOKLAHOMA STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1999 (27 years in practice)
Group practice Healthcare Express, Llp — 69 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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