Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ariann K Williams, CNNP

Neonatal Nurse Practitioner in Allentown, PA · enumerated 2008.

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

National Provider Identifier

1619121969

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Registry record

Entity type Individual (Type 1)

Name Ariann K Williams

Credential CNNP

Sex Female

Practice address 1200 S Cedar Crest Blvd, Allentown, PA, 18103

Phone (610) 402-7632

Fax (610) 402-7600

Enumeration date Nov 13, 2008

Last updated in NPPES Aug 15, 2019

Taxonomy & licenses

363LN0000X Neonatal Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 59067 (WV) Secondary

363LN0000X Neonatal Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License SP020535 (PA) 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 Ariann Williams practice?

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

What is the NPI number for Ariann Williams?

The National Provider Identifier (NPI) for Ariann Williams is 1619121969, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-15.