Fred L. Groos, MD
Family Medicine Physician · Marquette, MI
Fred L. Groos, MD is a family medicine physician with a practice address in Marquette, Michigan, and NPI 1467456400, issued on Jun 8, 2005. Check the license on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Fred L. Groos
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 28880-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1414 W Fair Ave Ste 242, Marquette, MI 49855
- Phone
- (906) 449-2900
- Enumerated
- Jun 8, 2005
- Record last updated
- Apr 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (906) 449-2975
- Medicaid ID
- 31367800 WI
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 1414 W Fair Ave Ste 242
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kerri Delongchamp, LPNLicensed Practical Nurse1346765237
- Cassandra Dix, LMSWClinical Social Worker1477904712
- David Guinn, NPFamily Nurse Practitioner1861864613
- Jade Skowronek, CHWCommunity Health Worker1669394912
- Rylee Smith, APRN, CNPAdult Health Nurse Practitioner1902661572
- Danielle ThouneCommunity Health Worker1649103789
Verify Fred L. Groos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)Check the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family medicine physician in 2024
213 Medicare Part D claims for 15 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 17 claims were for opioids.
Most prescribed
- Buprenorphine-Naloxone47 claims
- Gabapentin39 claims
- Bupropion Xl22 claims
- Morphine Sulfate16 claims
- Buprenorphine Hcl14 claims
- Methylphenidate Hcl14 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.
Fred L. Groos among 6,013 family medicine physician records in Michigan
Fred L. Groos, 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 fileNo · 58% of these records are
- Record last updated2021 · 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).
80 family medicine physician records list a practice address in Marquette
They are 80 of the 1,391 NPPES records with a practice address in Marquette, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Marquette → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Suzanne Clarke, MDMarquette, MI 498551932190832
- Matthew Doughty, MDMarquette, MI 498551316946411
- Daniel Hardie, M.D.Marquette, MI 498551669476925
- Leanne Hatfield, M.D.Marquette, MI 498551952305336
- Frederick Hoenke, MDMarquette, MI 498551710978853
- Stuart Johnson, DOMarquette, MI 498551861483901
- Lisa Long, MDMarquette, MI 498551326039462
- Robert Lorinser, MDMarquette, MI 498551780675827
Common questions
What is Fred L. Groos, MD's NPI number?
Fred L. Groos, MD's National Provider Identifier (NPI) is 1467456400, issued on Jun 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Fred L. Groos, MD located?
The NPPES record lists a practice address at 1414 W Fair Ave Ste 242, Marquette, MI, 49855. Phone: (906) 449-2900. Providers update this record themselves, so call before visiting.
How can I verify Fred L. Groos, MD's license?
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 Fred L. Groos, MD prescribe under Medicare Part D?
In 2024, Fred L. Groos, MD had 213 Medicare Part D claims for 15 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.