Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hildy A Saperstein, MD

Gynecology Physician in Valley Stream, NY · enumerated 2006.

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

National Provider Identifier

1639126451

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Registry record

Entity type Individual (Type 1)

Name Hildy A Saperstein

Credential MD

Sex Female

Practice address 260 W Sunrise Hwy, 200, Valley Stream, NY, 11581

Phone (516) 825-3600

Fax (516) 823-2051

Enumeration date May 27, 2006

Last updated in NPPES Sep 26, 2019

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License 171537 (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
01723362	Medicaid	NY	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1639126451 active?

Yes, as of the latest NPPES snapshot, NPI 1639126451 is active (record last updated 2019-09-26).

How do I verify Hildy Saperstein's NPI record?

Cross-check NPI 1639126451 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-26.