DR. BRIAN MATTHEW ZIMMER D.O.
NPI 1447589056
Emergency Medicine in Oklahoma City, OK
About Dr. Brian Matthew Zimmer D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRIAN MATTHEW ZIMMER D.O. (NPI 1447589056) is an individual emergency medicine provider in Oklahoma City, Oklahoma, licensed in Mississippi (26432) and active in the NPI registry since December 2009. He is enrolled in Medicare PECOS and maintains a secondary practice location in Hannibal.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Brian Matthew Zimmer D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
16Medicare enrollment records show Brian Zimmer reassigns Medicare billing to 16 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73120
- Reassigned Medicare billing, Oklahoma enrollment
- 975 clinicians in this Medicare group
Norman, OK 73071
- Reassigned Medicare billing, Oklahoma enrollment
- 418 clinicians in this Medicare group
Gainesville, TX 76240
- Reassigned Medicare billing, Texas enrollment
- 1,193 clinicians in this Medicare group
Cassville, MO 65625
- Reassigned Medicare billing, Missouri enrollment
- 151 clinicians in this Medicare group
Aurora, MO 65605
- Reassigned Medicare billing, Missouri enrollment
- 171 clinicians in this Medicare group
Branson, MO 65616
- Reassigned Medicare billing, Missouri enrollment
- 143 clinicians in this Medicare group
Austin, TX 78705
- Reassigned Medicare billing, Texas enrollment
- 547 clinicians in this Medicare group
Orange, TX 77630
- Reassigned Medicare billing, Texas enrollment
- 205 clinicians in this Medicare group
Hannibal, MO 63401
- Reassigned Medicare billing, Missouri enrollment
- 196 clinicians in this Medicare group
Hazlehurst, MS 39083
- Reassigned Medicare billing, Mississippi enrollment
- 159 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OKLAHOMA CITY, OK 73109
OKLAHOMA CITY, OK 73109
OKLAHOMA CITY, OK 73109
OKLAHOMA CITY, OK 73109
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 Brian Zimmer's NPI number?
The NPI number for Brian Zimmer is 1447589056. It was assigned to this individual provider in the NPPES registry on December 9, 2009.
Where is Brian Zimmer located?
Brian Zimmer practices at 4200 S Douglas Ave Suite 306, Oklahoma City, OK 73109. The listed phone number is (405) 481-9515.
What is Brian Zimmer's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Brian Zimmer enrolled in Medicare?
Yes. Brian Zimmer is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Brian Zimmer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Zimmer reassigns Medicare benefits to 16 organizations: Mercy Clinic Oklahoma Communities (Oklahoma City, OK), Emergency Services Of Oklahoma PC (Norman, OK), Acs Primary Care Physicians Southwest, PA (Gainesville, TX), Mercy Hospital Cassville (Cassville, MO), Mercy Hospital Aurora (Aurora, MO) and 11 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 Brian Zimmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brian Zimmer accept?
Health plans from Oscar Health, Oscar Health Maintenance Organization of Florida and Oscar Insurance Company list Brian Zimmer 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.
When was this NPI record last updated?
The NPPES record for Brian Zimmer was last updated on February 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.
# Dr. Brian Matthew Zimmer, D.O. · NPI 1447589056
Emergency Medicine physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since December 9, 2009.
## Identity
- **NPI:** 1447589056 (Entity type: Individual)
- **Enumerated:** December 9, 2009
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 26432 (Mississippi)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4200 S DOUGLAS AVE, SUITE 306, Oklahoma City, OK 73109-3223
- **Phone:** (405) 481-9515
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 16 organizations under Medicare reassignment (form CMS-855R): Mercy Clinic Oklahoma Communities (NPI 1386874550, Oklahoma City, OK); Emergency Services Of Oklahoma PC (NPI 1215249891, Norman, OK); Acs Primary Care Physicians Southwest, PA (NPI 1538101019, Gainesville, TX); Mercy Hospital Cassville (NPI 1285676932, Cassville, MO); Mercy Hospital Aurora (NPI 1467543090, Aurora, MO); and 11 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 16, 2026
- **Other identifiers:** Medicaid 200267650A (OK)
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Source: [NPI Profile](https://npiprofile.com/npi/1447589056) · Data from the CMS NPPES public registry.