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

Individual provider Hospitalist Physician · NPI 1124089396

Dr. Gary Michael Breen, MD practises Internal Medicine in Englewood, Colorado. Graduated from University of Minnesota Medical School in 1994, 32 years ago. Practices with Yampa Valley Medical Center, a 126-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
32
Trained at
University of Minnesota Medical School
Licensed in
CO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

501 E Hampden Ave
Englewood, CO 80113-2702 Not confirmed with CMS for 13 years — call before visiting
Phone: (303) 338-4545
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 37128 (CO)

Record details

NPI number1124089396
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 29, 2006
Last updated in NPPESOctober 23, 2013

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1994 (32 years in practice)
Group practice Yampa Valley Medical Center — 126 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients232
Services billed 534 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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 Yampa Valley Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 126 clinicians in the practice; 12 are shown here.

Other providers in Englewood