GARY WARREN HILLMAN D.O.
NPI 1760444160
Emergency Medicine in Oklahoma City, OK
About Gary Warren Hillman D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GARY WARREN HILLMAN D.O. (NPI 1760444160) is an individual emergency medicine provider in Oklahoma City, Oklahoma, licensed in Oklahoma (3957) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Pawhuska Hospital, Inc, and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 7
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Gary Warren Hillman D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
9Medicare enrollment records show Gary Hillman reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73102
- Reassigned Medicare billing, Oklahoma enrollment
- Medicare enrollment name: Emergency Physicians Of Mid-America PC
- 310 clinicians in this Medicare group
Norman, OK 73071
- Reassigned Medicare billing, Oklahoma enrollment
- 418 clinicians in this Medicare group
Seiling, OK 73663
- Reassigned Medicare billing, Oklahoma enrollment
- 23 clinicians in this Medicare group
Sulphur, OK 73086
- Reassigned Medicare billing, Oklahoma enrollment
- 66 clinicians in this Medicare group
Mooreland, OK 73852
- Reassigned Medicare billing, Oklahoma enrollment
- Also billed through NPI 1083617807 (Oklahoma)
- 62 clinicians in this Medicare group
Mcalester, OK 74501
- Reassigned Medicare billing, Oklahoma enrollment
- 82 clinicians in this Medicare group
Hooker, OK 73945
- Reassigned Medicare billing, Oklahoma enrollment
- 11 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Oklahoma enrollment
- 33 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Oklahoma enrollment
- 30 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Pawhuska Hospital, Inc
Critical Access Hospitals · Pawhuska, OKMemorial Hospital Of Texas County Authority
Critical Access Hospitals · Guymon, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OKLAHOMA CITY, OK 73120
OKLAHOMA CITY, OK 73120
OKLAHOMA CITY, OK 73120
OKLAHOMA CITY, OK 73120
OKLAHOMA CITY, OK 73120
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gary Hillman's NPI number?
The NPI number for Gary Hillman is 1760444160. It was assigned to this individual provider in the NPPES registry on April 3, 2006.
Where is Gary Hillman located?
Gary Hillman practices at 4050 W Memorial Rd ER Dept., Oklahoma City, OK 73120. The listed phone number is (405) 608-3402.
What is Gary Hillman's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gary Hillman enrolled in Medicare?
Yes. Gary Hillman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Gary Hillman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Hillman reassigns Medicare benefits to 9 organizations: Emergency Physicians Of Mid-America, P.C. (Oklahoma City, OK), Emergency Services Of Oklahoma PC (Norman, OK), Seiling Municipal Hospital Authority (Seiling, OK), Arbuckle Memorial Hospital (Sulphur, OK), Newman Memorial Hospital, Inc (Mooreland, OK) and 4 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gary Hillman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gary Hillman accept?
Health plans from Blue Cross and Blue Shield of Oklahoma list Gary Hillman as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Gary Hillman affiliated with any hospitals?
According to CMS data, Gary Hillman is affiliated with Pawhuska Hospital, Inc and Memorial Hospital Of Texas County Authority.
When was this NPI record last updated?
The NPPES record for Gary Hillman was last updated on May 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Gary Warren Hillman, D.O. · NPI 1760444160
Emergency Medicine physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since April 3, 2006.
## Identity
- **NPI:** 1760444160 (Entity type: Individual)
- **Enumerated:** April 3, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 3957 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 4050 W MEMORIAL RD, ER DEPT., Oklahoma City, OK 73120-8382
- **Phone:** (405) 608-3402 · **Fax:** (405) 749-4561
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): Emergency Physicians Of Mid-America, P.C. (NPI 1063825297, Oklahoma City, OK); Emergency Services Of Oklahoma PC (NPI 1215249891, Norman, OK); Seiling Municipal Hospital Authority (NPI 1740698109, Seiling, OK); Arbuckle Memorial Hospital (NPI 1700869492, Sulphur, OK); Newman Memorial Hospital, Inc (NPI 1497639181, Mooreland, OK); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** May 23, 2008
- **Other identifiers:** Medicare PIN 247226801 (OK); Medicaid 100846140A (OK); Medicare PIN 930126274 (OK); and 4 more
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Source: [NPI Profile](https://npiprofile.com/npi/1760444160) · Data from the CMS NPPES public registry.