Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John Seagraves, DO

Individual provider Emergency Medicine Physician · NPI 1811208622

John Seagraves, DO practises Emergency Medicine in Oklahoma City, Oklahoma. Qualified in 2009, 17 years ago. Practices with Hannibal Regional Healthcare System Inc, a 259-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri and Oklahoma.

Years since qualifying
17
Licensed in
MO, OK
In the registry since
2010
Specialties on file
2
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.

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Practice location Address checks out

4200 S Douglas Ave Ste 306
Oklahoma City, OK 73109-3215
Phone: (405) 636-7195
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 6000 Hospital Dr, Hannibal, MO 63401-6887 — (573) 248-5100

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 4954 (OK)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 2026000297 (MO)

Record details

NPI number1811208622
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJune 25, 2010
Last updated in NPPESMarch 3, 2026
Certification dateMarch 3, 2026

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Hannibal Regional Healthcare System Inc — 259 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients680
Services billed 738 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hannibal Regional Healthcare System Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 259 clinicians in the practice; 12 are shown here.

Other providers in Oklahoma City