Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Brenainn Mairtin Flanagan, MD

Individual provider Family Medicine Physician · NPI 1609164334

Dr. Brenainn Mairtin Flanagan, MD is a Hospitalist in Northport, New York. Qualified in 2008, 18 years ago. Practices with North Shore-Lij Medical PC, a 6,350-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
18
Licensed in
NY
In the registry since
2011
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

12 Burr Ave
Northport, NY 11768-1927
Phone: (631) 708-4066
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 262618 (NY)

Record details

NPI number1609164334
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 15, 2011
Last updated in NPPESAugust 15, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Also practisesFAMILY PRACTICE
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice North Shore-Lij Medical Pc — 6350 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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