Glenn E. Merz, MD
Family Medicine Physician · Muskegon, MI
Glenn E. Merz, MD is a family medicine physician with a practice address in Muskegon, Michigan, and NPI 1003819400, issued on May 31, 2005. Check the license (Michigan GM054275, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Glenn E. Merz
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- GM054275 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1675 Leahy St, Muskegon, MI 49442
- Phone
- (231) 728-5007
- Enumerated
- May 31, 2005
- Record last updated
- Feb 3, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (231) 728-5014
- Medicare enrollment
- Enrolled (PECOS I20031222000599); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 1989
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 1675 Leahy St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Keith Abraham, NPAdult Health Nurse Practitioner1669098810
- David AlvesCommunity Health Worker1811305881
- Sara Andrews, DOObstetrics & Gynecology Physician1225440373
- Gustav Barkett, DOObstetrics & Gynecology Physician1962494005
- Meredith Best, PACPhysician Assistant1023129517
- Jessica Cederquist, ATCAthletic Trainer1861456063
Verify Glenn E. Merz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license GM054275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average family medicine physician in 2024
2,636 Medicare Part D claims for 243 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium187 claims
- Amlodipine Besylate130 claims
- Levothyroxine Sodium96 claims
- Lisinopril84 claims
- Losartan Potassium84 claims
- Hydrochlorothiazide80 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.
Bills Medicare through 3 group practices
- Center For Physical Rehabilitation And Therapy LPGrand Rapids, MI
- Center For Physical Rehabilitation IncGrand Rapids, MI
- Metropolitan HospitalAllendale, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Glenn E. Merz among 6,013 family medicine physician records in Michigan
Glenn E. Merz, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1989 · median 2008 among the 3,493 with a school on file
- Record last updated2011 · 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).
49 family medicine physician records list a practice address in Muskegon
They are 49 of the 2,646 NPPES records with a practice address in Muskegon, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Muskegon → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Flick, MDMuskegon, MI 494421255334603
- Lady Rau, FNPMuskegon, MI 494421841840303
- Ronald Stratton, D.O.Muskegon, MI 494421497983159
- Byron Varnado, MDMuskegon, MI 494421962405357
- Robert Vermaire, MDMuskegon, MI 494421174527402
- Scott Addison, MDNorton Shores, MI 494411548236888
- Max Allen, D.O.Norton Shores, MI 494411659562213
- Sarna Becker, MDNorton Shores, MI 494411609443803
Common questions
What is Glenn E. Merz, MD's NPI number?
Glenn E. Merz, MD's National Provider Identifier (NPI) is 1003819400, issued on May 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Glenn E. Merz, MD located?
The NPPES record lists a practice address at 1675 Leahy St, Muskegon, MI, 49442. Phone: (231) 728-5007. Providers update this record themselves, so call before visiting.
How can I verify Glenn E. Merz, MD's license?
NPPES lists Michigan license number GM054275, 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 Glenn E. Merz, MD prescribe under Medicare Part D?
In 2024, Glenn E. Merz, MD had 2,636 Medicare Part D claims for 243 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.