WESTCHESTER PRIMARY AND SENIOR CARE INC
NPI 1548670235
Internal Medicine in Ossining, NY

Q: What is Westchester Primary And Senior Care Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since May 02, 2014

100 S HIGHLAND AVE, SUITE 10, OSSINING, NY 10562(914) 762-1486(914) 762-1166 Get Directions Write a Review

NPPES record last updated: October 8, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Westchester Primary And Senior Care Inc NPPES

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

WESTCHESTER PRIMARY AND SENIOR CARE INC (NPI 1548670235) is a healthcare organization registered as an internal medicine in Ossining, New York and active in the NPI registry since May 2014. The organization lists Silvy Mathew, Owner, as its authorized official.

NPPES Registry Identity

NPI1548670235

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameWESTCHESTER PRIMARY AND SENIOR CARE INC

Location Address100 S HIGHLAND AVE, SUITE 10Ossining, NY 10562-5634

Mailing Address100 S Highland Ave Ste 10Ossining, NY 10562-5634 · Fax (914) 801-5577

Phone(914) 762-1486

Fax(914) 762-1166

Organization SubpartNo

Authorized OfficialSilvy MathewOwner · (914) 800-9800

Enumeration DateMay 2, 2014

Last NPPES UpdateOctober 8, 2025

NPPES CertifiedOctober 8, 2025

✔ NPI 1548670235 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in NY · 198743

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

100 S HIGHLAND AVE, Ossining, NY 10562

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Other Identifiers 2

Medicaid01733715NY

Other42J061Medicare Id

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)

Westchester Primary And Senior Care Inc 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 Westchester Primary And Senior Care Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Silvy Mathew, MD

Internal Medicine

NPI 1295700276

100 S HIGHLAND AVE SUITE 10
Ossining, NY 10562

(914) 762-1486

✔ PECOS✔ Accepts MedicareSame address

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 Westchester Primary And Senior Care Inc's NPI number?

The NPI number for Westchester Primary And Senior Care Inc is 1548670235. It was assigned to this organization in the NPPES registry on May 2, 2014.

Where is Westchester Primary And Senior Care Inc located?

Westchester Primary And Senior Care Inc is located at 100 S Highland Ave Suite 10, Ossining, NY 10562. The listed phone number is (914) 762-1486.

What is Westchester Primary And Senior Care Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Westchester Primary And Senior Care Inc enrolled in Medicare?

Yes. Westchester Primary And Senior Care Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Westchester Primary And Senior Care Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Westchester Primary And Senior Care Inc. 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 Westchester Primary And Senior Care Inc was last updated on October 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.