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

Bret M Birrer, MD

Individual provider Emergency Medicine Physician · NPI 1902069131

Bret M Birrer, MD practises Emergency Medicine in Bozeman, Montana. Graduated from University of Washington School of Medicine in 2008, 18 years ago. Practices with Bozeman Health Deaconess Hospital, a 313-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona and Montana.

Years since qualifying
18
Trained at
University of Washington School of Medicine
Licensed in
AZ, MT
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

915 Highland Blvd
Bozeman, MT 59715-6902
Phone: (406) 414-5000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1501 N Campbell Ave, Tucson, AZ 85724-0001 — (520) 694-6093

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence MED-PHYS-LIC-48465 (MT)
Emergency Medicine Physician Taxonomy 207P00000X · Licence R70580 (AZ)

Record details

NPI number1902069131
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 8, 2008
Last updated in NPPESApril 10, 2025
Certification dateApril 10, 2025

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice Bozeman Health Deaconess Hospital — 313 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients170
Services billed 197 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 Bozeman Health Deaconess Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 313 clinicians in the practice; 12 are shown here.

Other providers in Bozeman