William Anthony Schaefer, MD
Family Medicine Physician · Grand Rapids, MI
William Anthony Schaefer, MD is a family medicine physician with a practice address in Grand Rapids, Michigan, and NPI 1356082333, issued on Apr 5, 2022. Check the license (Michigan 4351049095, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- William Anthony Schaefer
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 4351049095 MI
Self-reported in NPPES; status is on the state search - Practice location
- 300 Lafayette Ave SE Ste 4000, Grand Rapids, MI 49503
- Phone
- (616) 685-6922
- Enumerated
- Apr 5, 2022
- Record last updated
- Dec 5, 2022
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 300 Lafayette Ave SE Ste 4000
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Anthony Schaefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4351049095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average family medicine physician in 2024
963 Medicare Part D claims for 155 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Atorvastatin Calcium59 claims
- Gabapentin41 claims
- Albuterol Sulfate Hfa38 claims
- Hydrochlorothiazide36 claims
- Duloxetine Hcl30 claims
- Omeprazole29 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.
William Anthony Schaefer among 6,013 family medicine physician records in Michigan
William Anthony Schaefer, MD 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 2022, is newer than 89% of them.
- NPI issued2022 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2022 · 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
- Tricia Baird, M.D.Grand Rapids, MI 495031962491563
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- Michael Bishop, MDGrand Rapids, MI 495031316920614
- David Blair, MDGrand Rapids, MI 495031518910900
- John Cavacece, DOGrand Rapids, MI 495031093768244
- Ho-See Chan, MDGrand Rapids, MI 495031588617914
- Laurie Daum, MDGrand Rapids, MI 495031457302184
- Maged Hamed, MDGrand Rapids, MI 495031275509044
Common questions
What is William Anthony Schaefer, MD's NPI number?
William Anthony Schaefer, MD's National Provider Identifier (NPI) is 1356082333, issued on Apr 5, 2022. An NPI identifies a provider in billing; it is not a license.
Where is William Anthony Schaefer, MD located?
The NPPES record lists a practice address at 300 Lafayette Ave SE Ste 4000, Grand Rapids, MI, 49503. Phone: (616) 685-6922. Providers update this record themselves, so call before visiting.
How can I verify William Anthony Schaefer, MD's license?
NPPES lists Michigan license number 4351049095, 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 Anthony Schaefer, MD prescribe under Medicare Part D?
In 2024, William Anthony Schaefer, MD had 963 Medicare Part D claims for 155 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.