Stuart Lee Warnaar, MD
Internal Medicine Physician · Traverse City, MI
Stuart Lee Warnaar, MD is an internal medicine physician with a practice address in Traverse City, Michigan, and NPI 1245235472, issued on Jun 15, 2005. Check the license (Michigan 4301045523, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Stuart Lee Warnaar
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301045523 MI
Self-reported in NPPES; status is on the state search - Practice location
- 5041 N Royal Dr, Traverse City, MI 49684
- Phone
- (231) 935-0600
- Enumerated
- Jun 15, 2005
- Record last updated
- Sep 5, 2024
- Fax
- (231) 935-0613
- Medicaid ID
- 4154041 MI
- Medicare enrollment
- Enrolled (PECOS I20060209000246); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 5041 N Royal Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathan Beaulac, D.O.Internal Medicine Physician1508132283
- Elizabeth Elliot, D.O.Internal Medicine Physician1013919109
- Neesha Fournier, MDInternal Medicine Physician1194988402
- Paul Turner, MDInternal Medicine Physician1811992571
Verify Stuart Lee Warnaar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301045523Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average internal medicine physician in 2024
11,131 Medicare Part D claims for 870 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 468 claims were for opioids.
Most prescribed
- Atorvastatin Calcium637 claims
- Losartan Potassium480 claims
- Amlodipine Besylate461 claims
- Levothyroxine Sodium431 claims
- Lisinopril317 claims
- Simvastatin309 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.
Industry payments in 2024: $247.61
2 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Great Lakes Therapy Housecalls PCTraverse City, MI
- Munson Medical GroupTraverse City, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stuart Lee Warnaar among 5,735 internal medicine physician records in Michigan
Stuart Lee Warnaar, MD is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% 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, 90% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1981 · median 2006 among the 3,564 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
93 internal medicine physician records list a practice address in Traverse City
They are 93 of the 3,536 NPPES records with a practice address in Traverse City, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Traverse City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Troy Ahlstrom, M.D.Traverse City, MI 496841548265911
- Natalie Brown, M.D., PHDTraverse City, MI 496841427053529
- Elizabeth Elliot, D.O.Traverse City, MI 496841013919109
- David Friar, M.D.Traverse City, MI 496841720083108
- Kenneth Friar, M.D.Traverse City, MI 496841730184847
- William Howard, MDTraverse City, MI 496841588669725
- David Macdougall, MDTraverse City, MI 496841659376416
- Michael Salata, M.D.Traverse City, MI 496841275538670
Common questions
What is Stuart Lee Warnaar, MD's NPI number?
Stuart Lee Warnaar, MD's National Provider Identifier (NPI) is 1245235472, issued on Jun 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stuart Lee Warnaar, MD located?
The NPPES record lists a practice address at 5041 N Royal Dr, Traverse City, MI, 49684. Phone: (231) 935-0600. Providers update this record themselves, so call before visiting.
How can I verify Stuart Lee Warnaar, MD's license?
NPPES lists Michigan license number 4301045523, 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 Stuart Lee Warnaar, MD prescribe under Medicare Part D?
In 2024, Stuart Lee Warnaar, MD had 11,131 Medicare Part D claims for 870 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.