John W. Hamersma, M.D.
Family Medicine Physician · Wyoming, MI
John W. Hamersma, M.D. is a family medicine physician with a practice address in Wyoming, Michigan, and NPI 1033108329, issued on Oct 19, 2005. Check the license (Michigan 4301074575, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John W. Hamersma
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 4301074575 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2093 Health Dr SW, Wyoming, MI 49519
- Phone
- (616) 459-3158
- Enumerated
- Oct 19, 2005
- Record last updated
- Jun 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (616) 819-2222
- Medicaid ID
- 4949420 MI
- Medicare enrollment
- Enrolled (PECOS I20040513001013); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 1999
- Entity
- Type 1 · individual
Also registered at 2093 Health Dr SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rudolph Addy, MDPsychiatry Physician1003839168
- Thomas Bilisko, MDInternal Medicine Physician1275537011
- Michael Bultje, DOFamily Medicine Physician1144224882
- Miranda Deal, RDNRegistered Dietitian1902640832
- Armita Ghoddousi, DOGastroenterology Physician1396050118
- Emily Haligowski, FNPFamily Nurse Practitioner1518243278
Verify John W. Hamersma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301074575Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,085 Medicare Part D claims for 642 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 180 claims were for opioids.
Most prescribed
- Atorvastatin Calcium627 claims
- Levothyroxine Sodium529 claims
- Lisinopril424 claims
- Amlodipine Besylate339 claims
- Rosuvastatin Calcium322 claims
- Omeprazole298 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $40.23
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Bills Medicare through 3 group practices
- Center For Physical Rehabilitation And Therapy LPGrand Rapids, MI
- Center For Physical Rehabilitation IncGrand Rapids, MI
- Grand Valley Medical Specialists PLCGrand Rapids, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
24 family medicine physician records list a practice address in Wyoming
They are 24 of the 1,661 NPPES records with a practice address in Wyoming, and 6,013 family medicine physician records in Michigan.
All 24 in Wyoming → All 6,013 in Michigan → Every provider in Wyoming →
Other family medicine physician records in Michigan
- Asma AbbasHamtramck, MI1982946463
- Saadia Abbas, MDChesterfield, MI1619136868
- Faezeh AbbasiMonroe, MI1144065921
- Layla Abbasi, MDWayne, MI1346177607
- Marisa Abbo, DORochester Hills, MI1184605388
- Cathleen Abbott, M.D.East Lansing, MI1275630501
- Leah Abbott, MDGwinn, MI1760987341
- Nina Abboud, DORochester Hills, MI1639750557
- Ryan Abboud, DOBingham Farms, MI1104353077
- Christina Abd, MDSterling Heights, MI1770371965
Common questions
What is John W. Hamersma, M.D.'s NPI number?
John W. Hamersma, M.D.'s National Provider Identifier (NPI) is 1033108329, issued on Oct 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John W. Hamersma, M.D. located?
The NPPES record lists a practice address at 2093 Health Dr SW, Wyoming, MI, 49519. Phone: (616) 459-3158. Providers update this record themselves, so call before visiting.
How can I verify John W. Hamersma, M.D.'s license?
NPPES lists Michigan license number 4301074575, 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 John W. Hamersma, M.D. prescribe under Medicare Part D?
In 2024, John W. Hamersma, M.D. had 9,085 Medicare Part D claims for 642 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is John W. Hamersma, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.