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THOMAS G. O'BRIEN II, MS,DO,PC
NPI 1205050671
Family Medicine in New York, NY

Active since April 13, 2007
244 MADISON AVE, SUITE 3G, NEW YORK, NY 10016(516) 330-4173 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Thomas G. O'brien Ii, Ms,do,pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS G. O'BRIEN II, MS,DO,PC (NPI 1205050671) is a healthcare organization registered as a family medicine in New York, New York and active in the NPI registry since April 2007. The organization lists Thomas Gerald O'brien, Officer, as its authorized official.

NPPES Registry Identity

NPI1205050671
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameTHOMAS G. O'BRIEN II, MS,DO,PC
Location Address244 MADISON AVE, SUITE 3GNew York, NY 10016-2817
Mailing Address244 Madison Ave, Suite 3gNew York, NY 10016-2817 · (516) 330-4173
Phone(516) 330-4173
Organization SubpartNo
Authorized OfficialThomas Gerald O'brienOfficer · (516) 330-4173
Enumeration DateApril 13, 2007
Last NPPES UpdateAugust 22, 2020
✔ NPI 1205050671 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in NY · 210513
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
244 MADISON AVE, New York, NY 10016
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Other Identifiers 1

Other210513NY · License Number

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas G. O'brien Ii, Ms,do,pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Thomas G. O'brien II, Ms,do,pc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Thomas O Brien, D.O.
Family Practice
NPI 1063434298
1700 FLATBUSH AVE
Brooklyn, NY 11210
(516) 330-4173
✔ PECOS8.6 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Thomas G. O'brien II, Ms,do,pc's NPI number?

The NPI number for Thomas G. O'brien II, Ms,do,pc is 1205050671. It was assigned to this organization in the NPPES registry on April 13, 2007.

Where is Thomas G. O'brien II, Ms,do,pc located?

Thomas G. O'brien II, Ms,do,pc is located at 244 Madison Ave Suite 3G, New York, NY 10016. The listed phone number is (516) 330-4173.

What is Thomas G. O'brien II, Ms,do,pc's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Thomas G. O'brien II, Ms,do,pc enrolled in Medicare?

Yes. Thomas G. O'brien II, Ms,do,pc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Thomas G. O'brien II, Ms,do,pc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Thomas G. O'brien II, Ms,do,pc. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Thomas G. O'brien II, Ms,do,pc was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.