Spencer A. Winters, M.D.
Critical Care Medicine (Internal Medicine) Physician · Kalamazoo, MI
Spencer A. Winters, M.D. is a critical care medicine (internal medicine) physician with a practice address in Kalamazoo, Michigan, and NPI 1225391840, issued on Jun 19, 2012. Check the license (Michigan 4301100707, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Spencer A. Winters
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 4301100707 MI
Self-reported in NPPES; status is on the state search - Practice location
- 601 John St Ste M-510, Kalamazoo, MI 49007
- Phone
- (269) 341-7762
- Enumerated
- Jun 19, 2012
- Record last updated
- Nov 27, 2023
- Fax
- (269) 341-8098
- Medicare enrollment
- Enrolled (PECOS I20180709001574); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 178 in Michigan → Look up another NPI →
Also registered at 601 John St Ste M-510
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Ames, ACNPAcute Care Nurse Practitioner1932802980
- Julie Bourbonnais, MDCritical Care Medicine (Internal Medicine) Physician1487781795
- Glenn Carlson, ACNPAcute Care Nurse Practitioner1609103589
- Delyse Garg, MDPulmonary Disease Physician1811340813
- John Hendrix, ACNPAcute Care Nurse Practitioner1023817392
- Leah Ijere, ACNP-AGAcute Care Nurse Practitioner1689186520
Verify Spencer A. Winters in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301100707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 85.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
3 hospitals and group practices
- Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospitals4 of 5 stars
- Bronson Battle Creek HospitalBattle Creek, MI · Acute Care Hospitals3 of 5 stars
- Saleh MD PLLCBattle Creek, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Spencer A. Winters among 178 critical care medicine (internal medicine) physician records in Michigan
Spencer A. Winters, M.D. is one of 178 critical care medicine (internal medicine) physician records with a practice address in Michigan. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 57% of them.
- NPI issued2012 · 57% of these records are older, 39% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2012 · median 2008 among the 136 with a school on file
- Record last updated2023 · 30% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Michigan
There are 178 critical care medicine (internal medicine) physician records in Michigan.
All 178 in Michigan → Every provider in Kalamazoo → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Julie Bourbonnais, MDKalamazoo, MI 490071487781795
- An Nguyen, MDKalamazoo, MI 490071720608193
- Roy Putnam, D.O.Kalamazoo, MI 490071194389312
- Matthew Rossing, MDKalamazoo, MI 490071043268436
- James Shubert, D.O.Kalamazoo, MI 490071538548326
- Jeffrey Wilt, M.D.Kalamazoo, MI 490081033226097
- Raakesh Bhan, M.D.Battle Creek, MI 490151649278516
- Maddur Badarinath, M.D.Battle Creek, MI 490171255339222
Common questions
What is Spencer A. Winters, M.D.'s NPI number?
Spencer A. Winters, M.D.'s National Provider Identifier (NPI) is 1225391840, issued on Jun 19, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Spencer A. Winters, M.D. located?
The NPPES record lists a practice address at 601 John St Ste M-510, Kalamazoo, MI, 49007. Phone: (269) 341-7762. Providers update this record themselves, so call before visiting.
How can I verify Spencer A. Winters, M.D.'s license?
NPPES lists Michigan license number 4301100707, 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.
What is Spencer A. Winters, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.