Gary Warren Hillman, D.O.
Emergency Medicine Physician · Oklahoma City, OK
Gary Warren Hillman, D.O. is an emergency medicine physician with a practice address in Oklahoma City, Oklahoma, and NPI 1760444160, issued on Apr 3, 2006. Check the license (Oklahoma 3957, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Gary Warren Hillman
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 3957 OK
Self-reported in NPPES; status is on the state search - Practice location
- 4050 W Memorial RD, Oklahoma City, OK 73120
- Phone
- (405) 608-3402
- Enumerated
- Apr 3, 2006
- Record last updated
- May 23, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (405) 749-4561
- Medicaid IDs
- 100846140B OK
100846140A OK - Medicare enrollment
- Enrolled (PECOS I20031121000736); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 748 in Oklahoma → Look up another NPI →
Also registered at 4050 W Memorial RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alicia Abla, PHARM.D., CDEPharmacist1083995294
- Philip Adamson, M.D.Cardiovascular Disease Physician1407840689
- Kathryn Bachman, PA-CPhysician Assistant1225427040
- Anna Barbato, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1740592468
- Coty Barlow, APRN, CNPAdult Health Nurse Practitioner1265853758
- Matthew Bertus, P.A.Physician Assistant1093706368
Verify Gary Warren Hillman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 3957Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average emergency medicine physician in 2024
100 Medicare Part D claims for 64 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Memorial Hospital OF Texas County AuthorityGuymon, OK · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Gary Warren Hillman among 748 emergency medicine physician records in Oklahoma
Gary Warren Hillman, D.O. is one of 748 emergency medicine physician records with a practice address in Oklahoma. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 70% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1998 · median 2016 among the 438 with a school on file
- Record last updated2008 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Oklahoma
There are 748 emergency medicine physician records in Oklahoma.
All 748 in Oklahoma → Every provider in Oklahoma City → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Brandon Brown, M.D.Oklahoma City, OK 731201497071609
- Robert Crane, MDOklahoma City, OK 731201033344437
- Timothy Hill, MDOklahoma City, OK 731201447211461
- Colby Mayo, DOOklahoma City, OK 731201154383297
- Brent Mefford, MDOklahoma City, OK 731201497774293
- Mary Mustain, MDOklahoma City, OK 731201235384355
- Juan Nalagan, MDOklahoma City, OK 731201841259876
- Paul Orcutt, MDOklahoma City, OK 731201306806898
Common questions
What is Gary Warren Hillman, D.O.'s NPI number?
Gary Warren Hillman, D.O.'s National Provider Identifier (NPI) is 1760444160, issued on Apr 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Warren Hillman, D.O. located?
The NPPES record lists a practice address at 4050 W Memorial RD, Oklahoma City, OK, 73120. Phone: (405) 608-3402. Providers update this record themselves, so call before visiting.
How can I verify Gary Warren Hillman, D.O.'s license?
NPPES lists Oklahoma license number 3957, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gary Warren Hillman, D.O. prescribe under Medicare Part D?
In 2024, Gary Warren Hillman, D.O. had 100 Medicare Part D claims for 64 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.