Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Agatha P Williams

Pediatric Nurse Practitioner in Valhalla, NY · enumerated 2006.

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

National Provider Identifier

1184793135

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Registry record

Entity type Individual (Type 1)

Name Ms. Agatha P Williams

Sex Female

Practice address 95 Grasslands Rd Nicu 2nd Floor, Maria Fareri Childrens Hospital at Wms, Valhalla, NY, 10595

Phone (914) 493-8717

Enumeration date Nov 6, 2006

Last updated in NPPES Jul 31, 2007

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F381495 (NY) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Agatha Williams practice?

The practice location on file with NPPES is in Valhalla, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Agatha Williams?

The National Provider Identifier (NPI) for Agatha Williams is 1184793135, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-31.