NATHALIE G MATHIEU M.D.
NPI 1154584258
Student in an Organized Health Care Education/Training Program in Brooklyn, NY

Q: What is Nathalie Mathieu's NPI number?

The NPI number for Nathalie Mathieu is 1154584258. It was assigned to this individual provider in the NPPES registry on July 8, 2008.

Q: What is Nathalie Mathieu's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Q: When was this NPI record last updated?

The NPPES record for Nathalie Mathieu was last updated on December 30, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.

Active since July 08, 2008PECOS Enrolled

VA NY HARBOR HEALTHCARE SYSTEM 800 POLY PLACE, BROOKLYN, NY 11209(718) 836-6600 Get Directions Write a Review

NPPES record last updated: December 30, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Nathalie G Mathieu M.d. NPPES

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

NATHALIE G MATHIEU M.D. (NPI 1154584258) is an individual student in an organized health care education/training program in Brooklyn, New York and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1154584258

Entity TypeIndividualFemale

Primary Taxonomy390200000X

Provider Legal NameNATHALIE G MATHIEUCredential: M.D.

Location AddressVA NY HARBOR HEALTHCARE SYSTEM 800 POLY PLACEBrooklyn, NY 11209

Mailing Address451 Clarkson AveBrooklyn, NY 11203-2054

Phone(718) 836-6600

Sole ProprietorNo

Enumeration DateJuly 8, 2008

Last NPPES UpdateDecember 30, 2010

✔ NPI 1154584258 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care

Taxonomy Code390200000X

Definition

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

VA NY HARBOR HEALTHCARE SYSTEM 800 POLY PLACE, Brooklyn, NY 11209

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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)

Nathalie G Mathieu M.d. 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 Reassignment

Medicare enrollment records show Nathalie Mathieu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City Medical Of Upper East Side, PLLC

Same address

Urgent Care

8712 4TH AVE
Brooklyn, NY 11209

Reassigned Medicare billing, New York enrollment
596 clinicians in this Medicare group

NPI 1992126247 (516) 783-4600

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 Nathalie Mathieu's NPI number?

The NPI number for Nathalie Mathieu is 1154584258. It was assigned to this individual provider in the NPPES registry on July 8, 2008.

Where is Nathalie Mathieu located?

Nathalie Mathieu practices at VA Ny Harbor Healthcare System 800 Poly Place, Brooklyn, NY 11209. The listed phone number is (718) 836-6600.

What is Nathalie Mathieu's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Nathalie Mathieu enrolled in Medicare?

Yes. Nathalie Mathieu is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nathalie Mathieu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathalie Mathieu reassigns Medicare benefits to City Medical Of Upper East Side, PLLC (Brooklyn, NY). The 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 Nathalie Mathieu'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 Nathalie Mathieu was last updated on December 30, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.