DR. MICHAEL DOUGLAS PEACOCK MD
NPI 1104145200
Emergency Medicine in Ann Arbor, MI
About Dr. Michael Douglas Peacock Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL DOUGLAS PEACOCK MD (NPI 1104145200) is an individual emergency medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301096679) and active in the NPI registry since May 2010. He is enrolled in Medicare PECOS, is affiliated with Munson Healthcare Grayling Hospital, and is a graduate of Michigan State University College Of Human Medicine (2010).
NPPES Registry Identity
Specialties & Licenses 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
Dr. Michael Douglas Peacock 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
4Medicare enrollment records show Michael Peacock reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mc Bain, MI 49657
- Reassigned Medicare billing, Michigan enrollment
- 156 clinicians in this Medicare group
Cadillac, MI 49601
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Caberfae Emergency Group PC
- 92 clinicians in this Medicare group
Kalkaska, MI 49646
- Reassigned Medicare billing, Michigan enrollment
- 90 clinicians in this Medicare group
Charlevoix, MI 49720
- Reassigned Medicare billing, Michigan enrollment
- 97 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 4
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Munson Healthcare Grayling Hospital
Acute Care Hospitals · Grayling, MIMunson Healthcare Cadillac Hospital
Acute Care Hospitals · Cadillac, MICharlevoix Area Hospital
Critical Access Hospitals · Charlevoix, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 Peacock's NPI number?
The NPI number for Michael Peacock is 1104145200. It was assigned to this individual provider in the NPPES registry on May 28, 2010.
Where is Michael Peacock located?
Michael Peacock practices at 1500 E. Medical Center Drive B1-380 Tc, Ann Arbor, MI 48109. The listed phone number is (734) 763-7919.
What is Michael Peacock's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michael Peacock enrolled in Medicare?
Yes. Michael Peacock 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 Peacock's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Peacock reassigns Medicare benefits to 4 organizations: Munson Healthcare Cadillac (Mc Bain, MI), Caberfae Emergency Group, P.C. (Cadillac, MI), Kalkaska Memorial Health Center (Kalkaska, MI) and Hawk Emergency Group, P.C. (Charlevoix, MI). 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 Peacock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Peacock accept?
Health plans from Priority Health list Michael Peacock 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 Michael Peacock affiliated with any hospitals?
According to CMS data, Michael Peacock is affiliated with Munson Healthcare Grayling Hospital, Munson Healthcare Cadillac Hospital and Charlevoix Area Hospital.
When was this NPI record last updated?
The NPPES record for Michael Peacock was last updated on August 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Michael Douglas Peacock, MD · NPI 1104145200
Emergency Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since May 28, 2010.
## Identity
- **NPI:** 1104145200 (Entity type: Individual)
- **Enumerated:** May 28, 2010
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 4301096679 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E. MEDICAL CENTER DRIVE, B1-380 TC, Ann Arbor, MI 48109-5305
- **Phone:** (734) 763-7919 · **Fax:** (734) 763-9298
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Munson Healthcare Cadillac (NPI 1336539063, Mc Bain, MI); Caberfae Emergency Group, P.C. (NPI 1447932504, Cadillac, MI); Kalkaska Memorial Health Center (NPI 1891980306, Kalkaska, MI); Hawk Emergency Group, P.C. (NPI 1073295135, Charlevoix, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Michigan State University College Of Human Medicine, class of 2010
## Record status
- **NPPES last updated:** August 22, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1104145200) · Data from the CMS NPPES public registry.