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KATHLEEN GENTRY BRENNAN
NPI 1033353610
Pediatrics - Neonatal-Perinatal Medicine in New York, NY

Active since April 27, 2009PECOS Enrolled
321 W 90TH ST APT 2B, NEW YORK, NY 10024(212) 305-5827 Get Directions Write a Review

NPPES record last updated: January 2, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Kathleen Gentry Brennan NPPES

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

KATHLEEN GENTRY BRENNAN (NPI 1033353610) is an individual neonatal-perinatal medicine provider in New York, New York, licensed in New York (259498) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1033353610
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameKATHLEEN GENTRY BRENNAN
Location Address321 W 90TH ST APT 2BNew York, NY 10024-1626
Mailing Address321 W 90th St Apt 2bNew York, NY 10024-1626
Phone(212) 305-5827
Sole ProprietorYes
Enumeration DateApril 27, 2009
Last NPPES UpdateJanuary 2, 2024
NPPES CertifiedJanuary 2, 2024
✔ NPI 1033353610 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in NY · 259498
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 173822851 (NY)
321 W 90TH ST APT 2B, New York, NY 10024
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kathleen Gentry Brennan is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Kathleen Brennan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Trustees Of Columbia University In The City Of New York
3.9 mi
Anesthesiology
622 W 168TH ST
New York, NY 10032
  • Reassigned Medicare billing, New York enrollment
  • 3,922 clinicians in this Medicare group
NPI 1477068971 (212) 305-9876
Lawrence Medical Associates, PC
13 mi
Emergency Medicine
55 PALMER AVENUE, DEPARTMENT OF EMERGENCY MEDICINE
Bronxville, NY 10708
  • Reassigned Medicare billing, New York enrollment
  • 531 clinicians in this Medicare group
NPI 1497260806 (914) 787-1000

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 Kathleen Brennan's NPI number?

The NPI number for Kathleen Brennan is 1033353610. It was assigned to this individual provider in the NPPES registry on April 27, 2009.

Where is Kathleen Brennan located?

Kathleen Brennan practices at 321 W 90th St Apt 2B, New York, NY 10024. The listed phone number is (212) 305-5827.

What is Kathleen Brennan's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Kathleen Brennan enrolled in Medicare?

Yes. Kathleen Brennan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kathleen Brennan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Brennan reassigns Medicare benefits to 2 organizations: Trustees Of Columbia University In The City Of New York (New York, NY) and Lawrence Medical Associates, PC (Bronxville, 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 Kathleen Brennan'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 Kathleen Brennan was last updated on January 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.