Michael J. Brennan, M.D.
Physical Medicine & Rehabilitation Physician · Fairfield, CT
Michael J. Brennan, M.D. is a physical medicine & rehabilitation physician with a practice address in Fairfield, Connecticut, and NPI 1538117049, issued on May 5, 2006. Check the license (Connecticut 032201, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael J. Brennan
- Credential
- M.D.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- 032201 CT
Self-reported in NPPES; status is on the state search - Practice location
- 140 Sherman St, Fairfield, CT 06824
- Phone
- (203) 255-3451
- Enumerated
- May 5, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (203) 255-7478
- Medicare enrollment
- Enrolled (PECOS I20120106000247); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1985
- Entity
- Type 1 · individual
Also registered at 140 Sherman St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aimee Altschul-Latzman, M.D.Allergy & Immunology Physician1003855859
- Elizabeth Brennan, M.D.Physical Medicine & Rehabilitation Physician1144278359
- Marie Geelan, L.P.C.Professional Counselor1811244106
- Charles Lemieux, LMFTMarriage & Family Therapist1891035077
- Melissa Mastroianni, M.D.Plastic Surgery Physician1467776179
- Jeffrey Rosenthal, M.D.Specialist1811108590
Verify Michael J. Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 032201Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.3 times the Medicare Part D claims of the average physical medicine & rehabilitation physician in 2024
3,132 Medicare Part D claims for 223 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 2,220 claims were for opioids.
Most prescribed
- Oxycodone Hcl974 claims
- Oxycontin215 claims
- Morphine Sulfate Er163 claims
- Morphine Sulfate147 claims
- Hydrocodone-Acetaminophen128 claims
- Xtampza Er115 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: $216.34
12 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 3,895 providers of this specialty with any payment received $1,237.86 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
- Orthopaedic Specialty Group PCFairfield, CT
- Rehabilitation Associates IncFairfield, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in Connecticut
There are 192 physical medicine & rehabilitation physician records in Connecticut.
Other physical medicine & rehabilitation physician records in Connecticut
- Beth Aaronson, M.D.Danbury, CT1417991456
- Kathleen Abbott, M.D.Hartford, CT1619901378
- Mohammad Aljanaby, M.D.West Hartford, CT1003857707
- Nycaine Anderson, MDNew Haven, CT1265692545
- Sharmila Anugu, PTStamford, CT1053396069
- Paul Appleton, M.D.Naugatuck, CT1134186174
- Albert Ardao, MDNew London, CT1831223700
- Kwame Asante, MDHartford, CT1447570007
- Marilyn BagleyWest Hartford, CT1285149674
- Raghubinder Bajwa, M.D.Hartford, CT1508817107
Common questions
What is Michael J. Brennan, M.D.'s NPI number?
Michael J. Brennan, M.D.'s National Provider Identifier (NPI) is 1538117049, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Brennan, M.D. located?
The NPPES record lists a practice address at 140 Sherman St, Fairfield, CT, 06824. Phone: (203) 255-3451. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Brennan, M.D.'s license?
NPPES lists Connecticut license number 032201, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael J. Brennan, M.D. prescribe under Medicare Part D?
In 2024, Michael J. Brennan, M.D. had 3,132 Medicare Part D claims for 223 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. 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.