Katherine Renfer, DO
Family Medicine Physician · Alma, MI
Katherine Renfer, DO is a family medicine physician with a practice address in Alma, Michigan, and NPI 1134571763, issued on Jul 7, 2016. Check the license (Michigan 5101028738, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Katherine Renfer
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 5101028738 MI
4067 TN
Self-reported in NPPES; status is on the state search - Practice location
- 2025 W Cheesman RD, Alma, MI 48801
- Phone
- (989) 463-3451
- Enumerated
- Jul 7, 2016
- Record last updated
- Jan 23, 2026
- Fax
- (989) 463-4956
- Medicare enrollment
- Enrolled (PECOS I20250818004006); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 2025 W Cheesman RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Briana Lester, M.D.Psychiatry Physician1669736781
Verify Katherine Renfer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101028738Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
120 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole20 claims
- Methocarbamol11 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 one group practice
- Sacred Heart Mercy Health Care CenterAlma, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Renfer among 6,013 family medicine physician records in Michigan
Katherine Renfer, DO 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 2016, is newer than 71% of them.
- NPI issued2016 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2016 · median 2008 among the 3,493 with a school on file
- Record last updated2026 · 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).
35 family medicine physician records list a practice address in Alma
They are 35 of the 681 NPPES records with a practice address in Alma, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Alma → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Gregory Bechill, DOAlma, MI 488011073595351
- Christina Downer, D.O.Alma, MI 488011477907350
- Sara Elsayed, MDAlma, MI 488011740666858
- Paul Gruca, MDAlma, MI 488011467485532
- C Holmes, MDAlma, MI 488011568488054
- Maria Klahre, MDAlma, MI 488011134157985
- Edwin Meyer, M.D.Alma, MI 488011407274970
- Christopher Murray, D.O.Alma, MI 488011821024787
Common questions
What is Katherine Renfer, DO's NPI number?
Katherine Renfer, DO's National Provider Identifier (NPI) is 1134571763, issued on Jul 7, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Renfer, DO located?
The NPPES record lists a practice address at 2025 W Cheesman RD, Alma, MI, 48801. Phone: (989) 463-3451. Providers update this record themselves, so call before visiting.
How can I verify Katherine Renfer, DO's license?
NPPES lists Michigan license number 5101028738, 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 Katherine Renfer, DO prescribe under Medicare Part D?
In 2024, Katherine Renfer, DO had 120 Medicare Part D claims; 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.