Mark J. Brennan, MD
Neuromuscular Medicine (Physical Medicine & Rehabilitation) Physician · Clinton Township, MI
Mark J. Brennan, MD is a neuromuscular medicine (physical medicine & rehabilitation) physician with a practice address in Clinton Township, Michigan, and NPI 1225001746, issued on Feb 8, 2006. Check the license (Michigan 4301405324, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Mark J. Brennan
- Credential
- MD
- Primary taxonomy
- Neuromuscular Medicine (Physical Medicine & Rehabilitation) Physician 2081N0008X
- License number
- 4301405324 MI
Self-reported in NPPES; status is on the state search - Practice location
- 43650 Garfield RD, Clinton Township, MI 48038
- Phone
- (586) 263-0820
- Enumerated
- Feb 8, 2006
- Record last updated
- Mar 4, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (586) 263-3819
- Medicaid ID
- 4815088 MI
- Medicare enrollment
- Enrolled (PECOS I20050127000498); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1984
- Entity
- Type 1 · individual
5 nearest neuromuscular medicine (physical medicine & rehabilitation) physician records → All 6 in Michigan → Look up another NPI →
Also registered at 43650 Garfield RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Theresa Jones, M.S. PA CMedical Physician Assistant1376552877
- Assadollah Mazhari, M.D.Neurological Surgery Physician1982681409
- Jennifer Rosochacki, OTROccupational Therapist1912144627
Verify Mark J. Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301405324Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average neuromuscular medicine (physical medicine & rehabilitation) physician in 2024
1,175 Medicare Part D claims for 77 beneficiaries, against an average of 577 among the 41 providers of this specialty who prescribed in Part D. 452 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen317 claims
- Methylprednisolone176 claims
- Naproxen134 claims
- Tramadol Hcl125 claims
- Cyclobenzaprine Hcl83 claims
- Diclofenac Sodium62 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): 70.4 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: $73.98
4 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 29 providers of this specialty with any payment received $2,958.76 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 one group practice
- Associates IN Family Practice PLLCSterling Heights, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Neuromuscular Medicine (Physical Medicine & Rehabilitation) Physician providers in Michigan
There are 6 neuromuscular medicine (physical medicine & rehabilitation) physician records in Michigan.
All 6 in Michigan → Every provider in Clinton Township → Neuromuscular Medicine (Physical Medicine & Rehabilitation) Physician nationwide →
The 5 neuromuscular medicine (physical medicine & rehabilitation) physician records with the nearest ZIP codes
- Tony Boggess, DOAnn Arbor, MI 481041417071507
- Michelle Ososki, PTAFlint, MI 485071881287993
- John Tegtmeier, D.O.East Lansing, MI 488231285922625
- Kenneth Fox, MDBattle Creek, MI 490371821194317
- Susan Athey, PTAGrand Rapids, MI 495251669984985
Common questions
What is Mark J. Brennan, MD's NPI number?
Mark J. Brennan, MD's National Provider Identifier (NPI) is 1225001746, issued on Feb 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark J. Brennan, MD located?
The NPPES record lists a practice address at 43650 Garfield RD, Clinton Township, MI, 48038. Phone: (586) 263-0820. Providers update this record themselves, so call before visiting.
How can I verify Mark J. Brennan, MD's license?
NPPES lists Michigan license number 4301405324, 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 Mark J. Brennan, MD prescribe under Medicare Part D?
In 2024, Mark J. Brennan, MD had 1,175 Medicare Part D claims for 77 beneficiaries; the average among neuromuscular medicine (physical medicine & rehabilitation) physician prescribers was 577. Part D covers Medicare prescriptions only.
What is Mark J. Brennan, MD's MIPS final score?
The 2023 MIPS final score is 70.4 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.