Mary Brigid Halloran, DO
Family Medicine Physician · Brooklyn, NY
Mary Brigid Halloran, DO is a family medicine physician with a practice address in Brooklyn, New York, and NPI 1568873701, issued on May 9, 2014. Check the license (New York 288537-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mary Brigid Halloran
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 288537-1 NY
288537 NY
Self-reported in NPPES; status is on the state search - Practice location
- 165 Smith St, Brooklyn, NY 11201
- Phone
- (888) 663-6331
- Enumerated
- May 9, 2014
- Record last updated
- Mar 19, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20170912001300); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,417 in New York → Look up another NPI →
Also registered at 165 Smith St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michele Arocena, PA-CPhysician Assistant1134500580
- Megan Corley, N.P.Primary Care Nurse Practitioner1104173301
- Sophie D'SouzaPhysical Therapist1942080155
- Kara Denny, M.D.Internal Medicine Physician1649462524
- Patricia Driscoll, MDInternal Medicine Physician1104359249
- Luisa Guerriera, PAMedical Physician Assistant1245562867
Verify Mary Brigid Halloran 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 288537-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
49 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Odefsey13 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.
Bills Medicare through one group practice
- Mount Sinai School OF MedicineNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Brigid Halloran among 6,417 family medicine physician records in New York
Mary Brigid Halloran, DO 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 2014, is newer than 68% of them.
- NPI issued2014 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2014 · median 2007 among the 4,188 with a school on file
- Record last updated2025 · 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).
500 family medicine physician records list a practice address in Brooklyn
They are 500 of the 64,057 NPPES records with a practice address in Brooklyn, and 6,417 family medicine physician records in New York.
All 6,417 in New York → Every provider in Brooklyn → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Naganna Channaveeraiah, M.D, MBA, CPEBrooklyn, NY 112011801983390
- Anne Crenesse, MDBrooklyn, NY 112011306807144
- Maritza De La Rosa, M.D.Brooklyn, NY 112011245314392
- Marie Eloi-Stiven, MDBrooklyn, NY 112011326146010
- Barbara Haralson, MDBrooklyn, NY 112011245302702
- Mohammed Khan, MDBrooklyn, NY 112011205804051
- Samantha Lam, D.OBrooklyn, NY 112011306931779
- Fong Lee, MDBrooklyn, NY 112011265496434
Common questions
What is Mary Brigid Halloran, DO's NPI number?
Mary Brigid Halloran, DO's National Provider Identifier (NPI) is 1568873701, issued on May 9, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Mary Brigid Halloran, DO located?
The NPPES record lists a practice address at 165 Smith St, Brooklyn, NY, 11201. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Mary Brigid Halloran, DO's license?
NPPES lists New York license number 288537-1, 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 Mary Brigid Halloran, DO prescribe under Medicare Part D?
In 2024, Mary Brigid Halloran, DO had 49 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.