SPENCER A. WINTERS M.D.
NPI 1225391840
Internal Medicine - Critical Care Medicine in Kalamazoo, MI
About Spencer A. Winters M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SPENCER A. WINTERS M.D. (NPI 1225391840) is an individual critical care medicine provider in Kalamazoo, Michigan, licensed in Michigan (4301100707) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS, is affiliated with Bronson Battle Creek Hospital, and maintains a secondary practice location in Pittsburgh.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Spencer A. Winters M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Spencer Winters reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kalamazoo, MI 49007
- Reassigned Medicare billing, Michigan enrollment
- 1,133 clinicians in this Medicare group
Battle Creek, MI 49017
- Reassigned Medicare billing, Michigan enrollment
- 557 clinicians in this Medicare group
Battle Creek, MI 49017
- Reassigned Medicare billing, Michigan enrollment
- 3 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bronson Battle Creek Hospital
Acute Care Hospitals · Battle Creek, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
KALAMAZOO, MI 49007
KALAMAZOO, MI 49007
KALAMAZOO, MI 49007
KALAMAZOO, MI 49007
KALAMAZOO, MI 49007
KALAMAZOO, MI 49007
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Spencer Winters's NPI number?
The NPI number for Spencer Winters is 1225391840. It was assigned to this individual provider in the NPPES registry on June 19, 2012.
Where is Spencer Winters located?
Spencer Winters practices at 601 John St Ste M-510, Kalamazoo, MI 49007. The listed phone number is (269) 341-7762.
What is Spencer Winters's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Spencer Winters enrolled in Medicare?
Yes. Spencer Winters is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Spencer Winters's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Spencer Winters reassigns Medicare benefits to 3 organizations: Bronson Methodist Hospital (Kalamazoo, MI), Bronson Battle Creek Hospital (Battle Creek, MI) and Saleh MD PLLC (Battle Creek, MI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Spencer Winters's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Spencer Winters accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Spencer Winters as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Spencer Winters affiliated with any hospitals?
According to CMS data, Spencer Winters is affiliated with Bronson Battle Creek Hospital.
When was this NPI record last updated?
The NPPES record for Spencer Winters was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Spencer A. Winters, M.D. · NPI 1225391840
Critical Care Medicine physician in Kalamazoo, Michigan. Individual provider, active in the CMS NPPES registry since June 19, 2012.
## Identity
- **NPI:** 1225391840 (Entity type: Individual)
- **Enumerated:** June 19, 2012
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 4301100707 (Michigan)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 601 JOHN ST STE M-510, Kalamazoo, MI 49007-5341
- **Phone:** (269) 341-7762 · **Fax:** (269) 341-8098
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Bronson Methodist Hospital (NPI 1417961137, Kalamazoo, MI); Bronson Battle Creek Hospital (NPI 1093119638, Battle Creek, MI); Saleh MD PLLC (NPI 1649006107, Battle Creek, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** November 27, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1225391840) · Data from the CMS NPPES public registry.