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STEPHEN WARSHAFSKY MD INTERNAL MEDICINE PLLC
NPI 1780816918
Internal Medicine in Ardsley, NY

Active since August 21, 2009
1055 SAW MILL RIVER RD, SUITE 206, ARDSLEY, NY 10502(914) 591-0733(914) 591-2213 Get Directions Write a Review

NPPES record last updated: August 21, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Stephen Warshafsky Md Internal Medicine Pllc NPPES

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

STEPHEN WARSHAFSKY MD INTERNAL MEDICINE PLLC (NPI 1780816918) is a healthcare organization registered as an internal medicine in Ardsley, New York and active in the NPI registry since August 2009. The organization lists Stephen Warshafsky, Principal, as its authorized official.

NPPES Registry Identity

NPI1780816918
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSTEPHEN WARSHAFSKY MD INTERNAL MEDICINE PLLC
Location Address1055 SAW MILL RIVER RD, SUITE 206Ardsley, NY 10502-1045
Mailing Address1055 Saw Mill River Rd, Suite 206Ardsley, NY 10502-1045 · (914) 591-0733 · Fax (914) 591-2213
Phone(914) 591-0733
Fax(914) 591-2213
Organization SubpartNo
Authorized OfficialStephen WarshafskyPrincipal · (914) 260-4729
Enumeration DateAugust 21, 2009
✔ NPI 1780816918 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 · 60188090
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.
1055 SAW MILL RIVER RD, Ardsley, NY 10502
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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)

Stephen Warshafsky Md Internal Medicine Pllc 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 Stephen Warshafsky MD Internal Medicine PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Stephen Warshafsky, M.D.
Internal Medicine
NPI 1598846073
1055 SAW MILL RIVER RD SUITE 206
Ardsley, NY 10502
(914) 591-0733
✔ PECOSSame 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 Stephen Warshafsky MD Internal Medicine PLLC's NPI number?

The NPI number for Stephen Warshafsky MD Internal Medicine PLLC is 1780816918. It was assigned to this organization in the NPPES registry on August 21, 2009.

Where is Stephen Warshafsky MD Internal Medicine PLLC located?

Stephen Warshafsky MD Internal Medicine PLLC is located at 1055 Saw Mill River Rd Suite 206, Ardsley, NY 10502. The listed phone number is (914) 591-0733.

What is Stephen Warshafsky MD Internal Medicine PLLC's specialty?

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

Is Stephen Warshafsky MD Internal Medicine PLLC enrolled in Medicare?

Yes. Stephen Warshafsky MD Internal Medicine PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Stephen Warshafsky MD Internal Medicine PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Stephen Warshafsky MD Internal Medicine PLLC. 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 Stephen Warshafsky MD Internal Medicine PLLC was last updated on August 21, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.