Eric James Wielhouwer, D.O.
Internal Medicine Physician · Grandville, MI
Eric James Wielhouwer, D.O. is an internal medicine physician with a practice address in Grandville, Michigan, and NPI 1790819449, issued on Mar 15, 2007. Check the license (Michigan 5101015494, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Eric James Wielhouwer
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 5101015494 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3185 Macatawa Dr SW, Grandville, MI 49418
- Phone
- (616) 391-4500
- Enumerated
- Mar 15, 2007
- Record last updated
- Feb 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (616) 486-0130
- Medicaid ID
- 114985130 MI
- Medicare enrollment
- Enrolled (PECOS I20070619000585); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 3185 Macatawa Dr SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Bussone, PA-CPhysician Assistant1780995902
- Erin Jerabek-Gibson, PA-CPhysician Assistant1245674597
- Benjamin Schipper, MDInternal Medicine Physician1750415238
Verify Eric James Wielhouwer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101015494Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average internal medicine physician in 2024
3,564 Medicare Part D claims for 390 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 68 claims were for opioids.
Most prescribed
- Atorvastatin Calcium257 claims
- Levothyroxine Sodium216 claims
- Lisinopril196 claims
- Amlodipine Besylate154 claims
- Omeprazole133 claims
- Rosuvastatin Calcium119 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: $50.97
3 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Spectrum Health Primary Care PartnersGrandville, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric James Wielhouwer among 5,735 internal medicine physician records in Michigan
Eric James Wielhouwer, D.O. is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% 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 40% of them.
- NPI issued2007 · 40% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2002 · median 2006 among the 3,564 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Michigan
There are 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Grandville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Karen Garibaldi, MDGrandville, MI 494181396741682
- Rachel Harper, DOWyoming, MI 494181790301703
- David Heyboer, MDWyoming, MI 494181427052265
- Robert Kobiela, MDGrandville, MI 494181649219247
- Kurt Koepnick, MDWyoming, MI 494181093761470
- Phillip Marchese, MDWyoming, MI 494181457929739
- Carlos Merritt, M.D.Grandville, MI 494181033183165
- Erin Meyer, DOGrandville, MI 494181922265305
Common questions
What is Eric James Wielhouwer, D.O.'s NPI number?
Eric James Wielhouwer, D.O.'s National Provider Identifier (NPI) is 1790819449, issued on Mar 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Eric James Wielhouwer, D.O. located?
The NPPES record lists a practice address at 3185 Macatawa Dr SW, Grandville, MI, 49418. Phone: (616) 391-4500. Providers update this record themselves, so call before visiting.
How can I verify Eric James Wielhouwer, D.O.'s license?
NPPES lists Michigan license number 5101015494, 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 Eric James Wielhouwer, D.O. prescribe under Medicare Part D?
In 2024, Eric James Wielhouwer, D.O. had 3,564 Medicare Part D claims for 390 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.