William Jon Porter Peterson, M.D.
Emergency Medicine Physician · Ann Arbor, MI
William Jon Porter Peterson, M.D. is an emergency medicine physician with a practice address in Ann Arbor, Michigan, and NPI 1467863043, issued on May 16, 2014. Check the license (Michigan 4301105093, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- William Jon Porter Peterson
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 4301105093 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1500 East Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 936-6666
- Enumerated
- May 16, 2014
- Record last updated
- Jan 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20231107001539); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2014
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,083 in Michigan → Look up another NPI →
Also registered at 1500 East Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Jon Porter Peterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301105093Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average emergency medicine physician in 2024
131 Medicare Part D claims for 108 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Oxycodone Hcl17 claims
- Cephalexin14 claims
- Prednisone12 claims
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.
Industry payments in 2024: $16.87
1 payment: food and beverage; the largest payer was Janssen Biotech, Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Fairview Health ServicesMinneapolis, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Jon Porter Peterson among 3,083 emergency medicine physician records in Michigan
William Jon Porter Peterson, M.D. is one of 3,083 emergency medicine physician records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 55% of them.
- NPI issued2014 · 55% of these records are older, 41% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2013 among the 1,931 with a school on file
- Record last updated2019 · 53% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
236 emergency medicine physician records list a practice address in Ann Arbor
They are 236 of the 15,616 NPPES records with a practice address in Ann Arbor, and 3,083 emergency medicine physician records in Michigan.
All 3,083 in Michigan → Every provider in Ann Arbor → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ginette Busschots, MDAnn Arbor, MI 481091821028838
- Susanne Demeester, MDAnn Arbor, MI 481091316980196
- Jeffrey Freeman, MDAnn Arbor, MI 481091881624898
- Kyle Gunnerson, MDAnn Arbor, MI 481091447361456
- Andrew Hashikawa, M.D.Ann Arbor, MI 481091528046810
- Shaun Huang, MDAnn Arbor, MI 481091669415360
- William Meurer, MDAnn Arbor, MI 481091942234042
- Robert Neumar, MDAnn Arbor, MI 481091023058013
Common questions
What is William Jon Porter Peterson, M.D.'s NPI number?
William Jon Porter Peterson, M.D.'s National Provider Identifier (NPI) is 1467863043, issued on May 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is William Jon Porter Peterson, M.D. located?
The NPPES record lists a practice address at 1500 East Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 936-6666. Providers update this record themselves, so call before visiting.
How can I verify William Jon Porter Peterson, M.D.'s license?
NPPES lists Michigan license number 4301105093, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Jon Porter Peterson, M.D. prescribe under Medicare Part D?
In 2024, William Jon Porter Peterson, M.D. had 131 Medicare Part D claims for 108 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.