Peter Sonjoy Macfield, M.D.
Family Medicine Physician · Grand Rapids, MI
Peter Sonjoy Macfield, M.D. is a family medicine physician with a practice address in Grand Rapids, Michigan, and NPI 1831311778, issued on May 2, 2007. Check the license (Michigan 4301082390, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Peter Sonjoy Macfield
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 4301082390 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2460 Burton St SE, Grand Rapids, MI 49546
- Phone
- (616) 805-3846
- Enumerated
- May 2, 2007
- Record last updated
- Aug 4, 2026
- Fax
- (616) 551-1002
- Medicare enrollment
- Enrolled (PECOS I20070913000396); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 2460 Burton St SE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter Sonjoy Macfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301082390Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average family medicine physician in 2024
1,943 Medicare Part D claims for 159 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 92 claims were for opioids.
Most prescribed
- Omeprazole76 claims
- Alprazolam74 claims
- Montelukast Sodium63 claims
- Prednisone57 claims
- Dextroamphetamine-Amphetamine56 claims
- Levothyroxine Sodium55 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: $519.79
28 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 55,478 providers of this specialty with any payment received $902.55 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.
Peter Sonjoy Macfield among 6,013 family medicine physician records in Michigan
Peter Sonjoy Macfield, M.D. is one of 6,013 family medicine physician records with a practice address in Michigan. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2000 · median 2008 among the 3,493 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
317 family medicine physician records list a practice address in Grand Rapids
They are 317 of the 18,005 NPPES records with a practice address in Grand Rapids, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Grand Rapids → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Gary Bailey, D. O.Grand Rapids, MI 495461245201490
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- Bradley Clegg, DOGrand Rapids, MI 495461780648139
- William Dukes, MDGrand Rapids, MI 495461154322113
- Steven Dupuis, D.O.Grand Rapids, MI 495461518906130
- Jodi Hamblin, M.D.Grand Rapids, MI 495461366433732
- Kristi Kern, D.O.Grand Rapids, MI 495461003859299
Common questions
What is Peter Sonjoy Macfield, M.D.'s NPI number?
Peter Sonjoy Macfield, M.D.'s National Provider Identifier (NPI) is 1831311778, issued on May 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Peter Sonjoy Macfield, M.D. located?
The NPPES record lists a practice address at 2460 Burton St SE, Grand Rapids, MI, 49546. Phone: (616) 805-3846. Providers update this record themselves, so call before visiting.
How can I verify Peter Sonjoy Macfield, M.D.'s license?
NPPES lists Michigan license number 4301082390, 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 Peter Sonjoy Macfield, M.D. prescribe under Medicare Part D?
In 2024, Peter Sonjoy Macfield, M.D. had 1,943 Medicare Part D claims for 159 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.