Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Stephen Warshafsky, M.D.

Internal Medicine Physician in Ardsley, NY · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598846073

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Warshafsky

Credential M.D.

Sex Male

Practice address Ardsley, NY, 10502

Phone (914) 591-0733

Fax (914) 591-2213

Enumeration date Oct 18, 2006

Last updated in NPPES Jan 27, 2009

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 60188090 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
327702	Other	NY	MVP HEALTHCARE INSURANCE
WP415	Other	NY	OXFORD HEALTHCARE
126AQ1	Other	NY	EMPIRE BCBS
2164178	Other	NY	CIGNA HEALTHCARE
562346187	Other	NY	UNITED HEALTHCARE
2593193	Other	NY	GHI
562346187	Other	NY	AETNA
3C8953	Other	NY	HEALTHNET

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is NPI 1598846073 active?

Yes, as of the latest NPPES snapshot, NPI 1598846073 is active (record last updated 2009-01-27).

How do I verify Stephen Warshafsky's NPI record?

Cross-check NPI 1598846073 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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H Reddy Internal Medicine Physician · Ardsley, NY NPI 1073583845 David Merer Plastic Surgery within the Head & Neck (Otolaryngology) Physician · Ardsley, NY NPI 1821104324 Al Moscatello, MD PC Otolaryngology/Facial Plastic Surgery Physician · Ardsley, NY NPI 1912091612 Angela Damiano, MD PC Otolaryngology/Facial Plastic Surgery Physician · Ardsley, NY NPI 1487748141 Craig H Zalvan, MD PC Otolaryngology Physician · Ardsley, NY NPI 1225122989 Ent Faculty Practice LLP Otolaryngology/Facial Plastic Surgery Physician · Ardsley, NY NPI 1104910876 David Merer, MD PC Pediatric Otolaryngology Physician · Ardsley, NY NPI 1588758288 Carlo Honrado, MD PC Otolaryngology/Facial Plastic Surgery Physician · Ardsley, NY NPI 1568556272

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-27.