STUART LEE WARNAAR MD
NPI 1245235472
Internal Medicine in Traverse City, MI
About Stuart Lee Warnaar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STUART LEE WARNAAR MD (NPI 1245235472) is an individual internal medicine provider in Traverse City, Michigan, licensed in Michigan (4301045523) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Munson Healthcare Cadillac Hospital, and is a graduate of Wayne State University School Of Medicine (1981).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Stuart Lee Warnaar Md 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
2Medicare enrollment records show Stuart Warnaar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Traverse City, MI 49684
- Reassigned Medicare billing, Michigan enrollment
- 191 clinicians in this Medicare group
Traverse City, MI 49684
- Reassigned Medicare billing, Michigan enrollment
- 492 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 10
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Munson Healthcare Cadillac Hospital
Acute Care Hospitals · Cadillac, MIMunson Medical Center
Acute Care Hospitals · Traverse City, MIMunson Healthcare Manistee Hospital
Acute Care Hospitals · Manistee, MIPaul Oliver Memorial Hospital
Critical Access Hospitals · Frankfort, MIKalkaska Memorial Health Center
Critical Access Hospitals · Kalkaska, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49684 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 9
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TRAVERSE CITY, MI 49684
TRAVERSE CITY, MI 49684
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 Stuart Warnaar's NPI number?
The NPI number for Stuart Warnaar is 1245235472. It was assigned to this individual provider in the NPPES registry on June 15, 2005.
Where is Stuart Warnaar located?
Stuart Warnaar practices at 5041 N Royal Dr, Traverse City, MI 49684. The listed phone number is (231) 935-0600.
What is Stuart Warnaar's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Stuart Warnaar enrolled in Medicare?
Yes. Stuart Warnaar 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 Stuart Warnaar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stuart Warnaar reassigns Medicare benefits to 2 organizations: Munson Medical Group (Traverse City, MI) and Munson Medical Center (Traverse City, 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 Stuart Warnaar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stuart Warnaar accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Stuart Warnaar 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 Stuart Warnaar affiliated with any hospitals?
According to CMS data, Stuart Warnaar is affiliated with Munson Healthcare Cadillac Hospital, Munson Medical Center, Munson Healthcare Manistee Hospital, Paul Oliver Memorial Hospital and Kalkaska Memorial Health Center.
When was this NPI record last updated?
The NPPES record for Stuart Warnaar was last updated on September 5, 2024. 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.
# Stuart Lee Warnaar, MD · NPI 1245235472
Internal Medicine physician in Traverse City, Michigan. Individual provider, active in the CMS NPPES registry since June 15, 2005.
## Identity
- **NPI:** 1245235472 (Entity type: Individual)
- **Enumerated:** June 15, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 4301045523 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 5041 N ROYAL DR, Traverse City, MI 49684-6986
- **Phone:** (231) 935-0600 · **Fax:** (231) 935-0613
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Munson Medical Group (NPI 1326801440, Traverse City, MI); Munson Medical Center (NPI 1326645698, Traverse City, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 1981
## Record status
- **NPPES last updated:** September 5, 2024
- **Other identifiers:** Medicaid 4154041 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1245235472) · Data from the CMS NPPES public registry.