WILLIAM JON PORTER PETERSON M.D.
NPI 1467863043
Emergency Medicine in Ann Arbor, MI
About William Jon Porter Peterson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM JON PORTER PETERSON M.D. (NPI 1467863043) is an individual emergency medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301105093) and active in the NPI registry since May 2014. He is enrolled in Medicare PECOS, is affiliated with M Health Fairview University Of Mn, and is a graduate of University Of Michigan Medical School (2014).
NPPES Registry Identity
Specialties & Licenses
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
William Jon Porter Peterson M.d. 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 Reassignment
Medicare enrollment records show William Peterson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Wyoming, MN 55092
- Reassigned Medicare billing, Minnesota enrollment
- 4,038 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 5
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
M Health Fairview University Of Mn
Acute Care Hospitals · Minneapolis, MNGlacial Ridge Hospital
Critical Access Hospitals · Glenwood, MNPhysician 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 William Peterson's NPI number?
The NPI number for William Peterson is 1467863043. It was assigned to this individual provider in the NPPES registry on May 16, 2014.
Where is William Peterson located?
William Peterson practices at 1500 East Medical Center Dr B1 Floor University Hospital Recp Emergency, Ann Arbor, MI 48109. The listed phone number is (734) 936-6666.
What is William Peterson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is William Peterson enrolled in Medicare?
Yes. William Peterson 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 organization bills Medicare for William Peterson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Peterson reassigns Medicare benefits to Fairview Health Services (Wyoming, MN). The 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 William Peterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Peterson accept?
Health plans from Medica list William Peterson 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 William Peterson affiliated with any hospitals?
According to CMS data, William Peterson is affiliated with M Health Fairview University Of Mn and Glacial Ridge Hospital.
When was this NPI record last updated?
The NPPES record for William Peterson was last updated on January 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# William Jon Porter Peterson, M.D. · NPI 1467863043
Emergency Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since May 16, 2014.
## Identity
- **NPI:** 1467863043 (Entity type: Individual)
- **Enumerated:** May 16, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 4301105093 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 EAST MEDICAL CENTER DR, B1 FLOOR UNIVERSITY HOSPITAL RECP EMERGENCY, Ann Arbor, MI 48109-5301
- **Phone:** (734) 936-6666
## 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:** Fairview Health Services (NPI 1083692941, Wyoming, MN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 2014
## Record status
- **NPPES last updated:** January 3, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1467863043) · Data from the CMS NPPES public registry.