Michael J. Breyer, MD
Emergency Medicine Physician · Denver, CO
Michael J. Breyer, MD is an emergency medicine physician with a practice address in Denver, Colorado, and NPI 1063490878, issued on Jan 3, 2006. Check the license (Colorado DR.0049474, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael J. Breyer
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- DR.0049474 CO
C10007162 DE
MD228106 OR
Self-reported in NPPES; status is on the state search - Practice location
- 660 Bannock St, Denver, CO 80204
- Phone
- (303) 739-1211
- Enumerated
- Jan 3, 2006
- Record last updated
- Nov 19, 2025
- Fax
- (303) 602-4560
- Medicaid ID
- 1000028561 DE
- Medicare enrollment
- Enrolled (PECOS I20251203003540); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,434 in Colorado → Look up another NPI →
Also registered at 660 Bannock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael J. Breyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0049474Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average emergency medicine physician in 2024
55 Medicare Part D claims for 33 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Denver Health And Hospital AuthorityDenver, CO
- Legacy Clinics LLCGresham, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Breyer among 1,434 emergency medicine physician records in Colorado
Michael J. Breyer, MD is one of 1,434 emergency medicine physician records with a practice address in Colorado. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 57% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2000 · median 2011 among the 810 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Colorado
There are 1,434 emergency medicine physician records in Colorado.
All 1,434 in Colorado → Every provider in Denver → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Kerry Broderick, MDDenver, CO 802041073526331
- Richard Byyny, MDDenver, CO 802041578517082
- Stephen Cantrill, MDDenver, CO 802041821018011
- Katherine Hurlbut, MDDenver, CO 802041518971662
- Michael LiaoDenver, CO 802041336174101
- Lisa Maccormack, MDDenver, CO 802041245289834
- Vincent Markovchick, MDDenver, CO 802041144239088
- Kerri Mason, MDDenver, CO 802041275567711
Common questions
What is Michael J. Breyer, MD's NPI number?
Michael J. Breyer, MD's National Provider Identifier (NPI) is 1063490878, issued on Jan 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Breyer, MD located?
The NPPES record lists a practice address at 660 Bannock St, Denver, CO, 80204. Phone: (303) 739-1211. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Breyer, MD's license?
NPPES lists Colorado license number DR.0049474, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael J. Breyer, MD prescribe under Medicare Part D?
In 2024, Michael J. Breyer, MD had 55 Medicare Part D claims for 33 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Michael J. Breyer, MD's MIPS final score?
The 2023 MIPS final score is 91.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.