Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Rosemary Williams, TEACHER

Specialist in Valhalla, NY · enumerated 2009.

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

National Provider Identifier

1699906206

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Registry record

Entity type Individual (Type 1)

Name Mrs. Rosemary Williams

Credential TEACHER

Sex Female

Practice address 95 Bradhurst Ave, Valhalla, NY, 10595

Phone (914) 592-7555

Enumeration date Jul 30, 2009

Last updated in NPPES Jul 30, 2009

Taxonomy & licenses

174400000X Specialist Other Service Providers Primary

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

What specialty is Rosemary Williams?

Rosemary Williams is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Mariam Latuga Neonatal-Perinatal Medicine Physician · Valhalla, NY NPI 1700884749 Tracy Lawrence-Black Neonatal-Perinatal Medicine Physician · Valhalla, NY NPI 1033119953 Blythedale Children'S Hospital Children's Rehabilitation Hospital · Valhalla, NY NPI 1679573083 Jay Selman Neurology with Special Qualifications in Child Neurology Physician · Valhalla, NY NPI 1568414746 Byron Fernandez Pediatrics Physician · Valhalla, NY NPI 1598873309 Xiaofang Wei Physical Medicine & Rehabilitation Physician · Valhalla, NY NPI 1225139801 Ying Chuu Pediatrics Physician · Valhalla, NY NPI 1215021654 David Ashe Pediatrics Physician · Valhalla, NY NPI 1710060413

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-30.