MARY BRIGID HALLORAN DO
NPI 1568873701
Family Medicine in Brooklyn, NY
About Mary Brigid Halloran Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY BRIGID HALLORAN DO (NPI 1568873701) is an individual family medicine provider in Brooklyn, New York, licensed in New York (288537-1) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2014).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mary Brigid Halloran Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Mary Brigid Halloran reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10017
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: One Medical Of Ny PC
- 139 clinicians in this Medicare group
New York, NY 10019
- Reassigned Medicare billing, New York enrollment
- 99 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mary Brigid Halloran's NPI number?
The NPI number for Mary Brigid Halloran is 1568873701. It was assigned to this individual provider in the NPPES registry on May 9, 2014.
Where is Mary Brigid Halloran located?
Mary Brigid Halloran practices at 165 Smith St, Brooklyn, NY 11201. The listed phone number is (888) 663-6331.
What is Mary Brigid Halloran's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mary Brigid Halloran enrolled in Medicare?
Yes. Mary Brigid Halloran is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mary Brigid Halloran's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Brigid Halloran reassigns Medicare benefits to 2 organizations: One Medical Of Ny, P.C. (New York, NY) and Mount Sinai School Of Medicine (New York, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Brigid Halloran's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mary Brigid Halloran was last updated on March 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mary Brigid Halloran, DO · NPI 1568873701
Family Medicine physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since May 9, 2014.
## Identity
- **NPI:** 1568873701 (Entity type: Individual)
- **Enumerated:** May 9, 2014
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 288537-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 165 SMITH ST, Brooklyn, NY 11201-6337
- **Phone:** (888) 663-6331 · **Fax:** (415) 252-7176
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): One Medical Of Ny, P.C. (NPI 1861709487, New York, NY); Mount Sinai School Of Medicine (NPI 1528538774, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Arizona College Of Osteopathic Medicine Mid Western University, class of 2014
## Record status
- **NPPES last updated:** March 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1568873701) · Data from the CMS NPPES public registry.