MICHAEL J BREYER MD
NPI 1063490878
Emergency Medicine in Denver, CO
About Michael J Breyer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL J BREYER MD (NPI 1063490878) is an individual emergency medicine provider in Denver, Colorado, licensed in Colorado (DR.0049474) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Gresham, and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Michael J Breyer Md 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 Reassignments
3Medicare enrollment records show Michael Breyer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Denver, CO 80204
- Reassigned Medicare billing, Colorado enrollment
- 2,259 clinicians in this Medicare group
Denver, CO 80202
- Reassigned Medicare billing, Colorado enrollment
- 14 clinicians in this Medicare group
Sandy, OR 97055
- Reassigned Medicare billing, Oregon enrollment
- 1,248 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80204 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENVER, CO 80204
DENVER, CO 80204
DENVER, CO 80204
DENVER, CO 80204
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 Michael Breyer's NPI number?
The NPI number for Michael Breyer is 1063490878. It was assigned to this individual provider in the NPPES registry on January 3, 2006.
Where is Michael Breyer located?
Michael Breyer practices at 660 Bannock St, Denver, CO 80204. The listed phone number is (303) 739-1211.
What is Michael Breyer's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michael Breyer enrolled in Medicare?
Yes. Michael Breyer 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 organizations bill Medicare for Michael Breyer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Breyer reassigns Medicare benefits to 3 organizations: Denver Health And Hospital Authority (Denver, CO), Denver Health And Hospital Authority (Denver, CO) and Legacy Clinics LLC (Sandy, OR). 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 Michael Breyer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Breyer was last updated on November 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Michael J Breyer, MD · NPI 1063490878
Emergency Medicine physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since January 3, 2006.
## Identity
- **NPI:** 1063490878 (Entity type: Individual)
- **Enumerated:** January 3, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** DR.0049474 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 660 BANNOCK ST, Denver, CO 80204-4506
- **Phone:** (303) 739-1211 · **Fax:** (303) 602-4560
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Denver Health And Hospital Authority (NPI 1477569838, Denver, CO); Denver Health And Hospital Authority (NPI 1659830032, Denver, CO); Legacy Clinics LLC (NPI 1730472192, Sandy, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** November 19, 2025
- **Other identifiers:** Medicaid 1000028561 (DE)
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Source: [NPI Profile](https://npiprofile.com/npi/1063490878) · Data from the CMS NPPES public registry.