Brenainn Mairtin Flanagan, M.D.,
Family Medicine Physician · Northport, NY
Brenainn Mairtin Flanagan, M.D., is a family medicine physician with a practice address in Northport, New York, and NPI 1609164334, issued on Jul 15, 2011. Check the license (New York 262618, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Brenainn Mairtin Flanagan
- Credential
- M.D.,
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 262618 NY
Self-reported in NPPES; status is on the state search - Practice location
- 12 Burr Ave, Northport, NY 11768
- Phone
- (631) 708-4066
- Enumerated
- Jul 15, 2011
- Record last updated
- Aug 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120215000358); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,417 in New York → Look up another NPI →
Verify Brenainn Mairtin Flanagan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 262618Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family medicine physician in 2024
413 Medicare Part D claims for 159 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 60 claims were for opioids.
Most prescribed
- Cefuroxime44 claims
- Pantoprazole Sodium24 claims
- Oxycodone Hcl23 claims
- Amoxicillin-Clavulanate Potass15 claims
- Eliquis14 claims
- Prednisone14 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 MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- North Shore-Lij Medical PCGlen Cove, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brenainn Mairtin Flanagan among 6,417 family medicine physician records in New York
Brenainn Mairtin Flanagan, M.D., is one of 6,417 family medicine physician records with a practice address in New York. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 60% of them.
- NPI issued2011 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2008 · median 2007 among the 4,188 with a school on file
- Record last updated2011 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in New York
There are 6,417 family medicine physician records in New York.
All 6,417 in New York → Every provider in Northport → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Peter Butera, DONorthport, NY 117681134165491
- Steven Klein, M.D.Northport, NY 117681689769325
- Alan Lampert, M.D.Northport, NY 117681225035876
- Robert Nissan, M.D.Northport, NY 117681669479010
- Eray Oge, M.DNorthport, NY 117681235310400
- John Sammis, D.O.Northport, NY 117681366896227
- Elizabeth Werns, M.D.Northport, NY 117681972527711
- Marc Cimmino, D.O.Oakdale, NY 117691669578159
Common questions
What is Brenainn Mairtin Flanagan, M.D.,'s NPI number?
Brenainn Mairtin Flanagan, M.D.,'s National Provider Identifier (NPI) is 1609164334, issued on Jul 15, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Brenainn Mairtin Flanagan, M.D., located?
The NPPES record lists a practice address at 12 Burr Ave, Northport, NY, 11768. Phone: (631) 708-4066. Providers update this record themselves, so call before visiting.
How can I verify Brenainn Mairtin Flanagan, M.D.,'s license?
NPPES lists New York license number 262618, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brenainn Mairtin Flanagan, M.D., prescribe under Medicare Part D?
In 2024, Brenainn Mairtin Flanagan, M.D., had 413 Medicare Part D claims for 159 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Brenainn Mairtin Flanagan, M.D.,'s MIPS final score?
The 2023 MIPS final score is 91.3 of 100. 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.