BRETT THOMAS ZIMMERMAN DO
NPI 1770576571
Obstetrics & Gynecology in Granbury, TX
About Brett Thomas Zimmerman Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRETT THOMAS ZIMMERMAN DO (NPI 1770576571) is an individual obstetrics & gynecology provider in Granbury, Texas, licensed in Texas (U3763) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Lake Granbury Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Brett Thomas Zimmerman Do 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 Reassignment
Medicare enrollment records show Brett Zimmerman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Granbury, TX 76048
- Reassigned Medicare billing, Texas enrollment
- 78 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
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lake Granbury Medical Center
Acute Care Hospitals · Granbury, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 76048 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRANBURY, TX 76048
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 Brett Zimmerman's NPI number?
The NPI number for Brett Zimmerman is 1770576571. It was assigned to this individual provider in the NPPES registry on August 26, 2005.
Where is Brett Zimmerman located?
Brett Zimmerman practices at 1212 Medical Plaza Ct, Granbury, TX 76048. The listed phone number is (817) 279-1776.
What is Brett Zimmerman's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Brett Zimmerman enrolled in Medicare?
Yes. Brett Zimmerman 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 organization bills Medicare for Brett Zimmerman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett Zimmerman reassigns Medicare benefits to Hood Medical Group (Granbury, TX). The 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 Brett Zimmerman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brett Zimmerman accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Brett Zimmerman 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 Brett Zimmerman affiliated with any hospitals?
According to CMS data, Brett Zimmerman is affiliated with Lake Granbury Medical Center.
When was this NPI record last updated?
The NPPES record for Brett Zimmerman was last updated on July 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Brett Thomas Zimmerman, DO · NPI 1770576571
Obstetrics & Gynecology physician in Granbury, Texas. Individual provider, active in the CMS NPPES registry since August 26, 2005.
## Identity
- **NPI:** 1770576571 (Entity type: Individual)
- **Enumerated:** August 26, 2005
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** U3763 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 1212 MEDICAL PLAZA CT, Granbury, TX 76048-5653
- **Phone:** (817) 279-1776 · **Fax:** (817) 573-2239
## 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:** Hood Medical Group (NPI 1225096472, Granbury, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Michigan State University College Of Osteopathic Medicine, class of 1997
## Record status
- **NPPES last updated:** July 5, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1770576571) · Data from the CMS NPPES public registry.