John Macnowski, M.D.
Internal Medicine Physician · Traverse City, MI
John Macnowski, M.D. is an internal medicine physician with a practice address in Traverse City, Michigan, and NPI 1316066806, issued on Mar 28, 2007. Check the license (Michigan 4301088170, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John Macnowski
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301088170 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1105 Sixth St, Traverse City, MI 49684
- Phone
- (231) 935-5000
- Enumerated
- Mar 28, 2007
- Record last updated
- Jul 26, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (231) 346-6017
- Medicare enrollment
- Enrolled (PECOS I20090611000385); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 1105 Sixth St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Macnowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301088170Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
319 Medicare Part D claims for 134 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Furosemide24 claims
- Atorvastatin Calcium23 claims
- Metoprolol Succinate17 claims
- Omeprazole15 claims
- Lisinopril14 claims
- Prednisone13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 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).
Industry payments in 2024: $16.83
1 payment: food and beverage; the largest payer was Pfizer 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
- Grand Traverse Physician Services PCTraverse City, MI
- Sound Inpatient Physicians-Michigan PLLCTraverse City, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Macnowski among 5,735 internal medicine physician records in Michigan
John Macnowski, M.D. 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 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2006 · median 2006 among the 3,564 with a school on file
- Record last updated2016 · 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 John Macnowski, M.D.'s NPI number?
John Macnowski, M.D.'s National Provider Identifier (NPI) is 1316066806, issued on Mar 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Macnowski, M.D. located?
The NPPES record lists a practice address at 1105 Sixth St, Traverse City, MI, 49684. Phone: (231) 935-5000. Providers update this record themselves, so call before visiting.
How can I verify John Macnowski, M.D.'s license?
NPPES lists Michigan license number 4301088170, 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 John Macnowski, M.D. prescribe under Medicare Part D?
In 2024, John Macnowski, M.D. had 319 Medicare Part D claims for 134 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is John Macnowski, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.