Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eloisa Williams, R.N.,P.H.N.

Registered Nurse in Oakland, CA · enumerated 2007.

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

National Provider Identifier

1992994719

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Registry record

Entity type Individual (Type 1)

Name Eloisa Williams

Credential R.N.,P.H.N.

Sex Female

Practice address 7200 Bancroft Ave Ste 202, Oakland, CA, 94605

Phone (510) 577-7000

Fax (510) 577-7024

Enumeration date Oct 17, 2007

Last updated in NPPES Oct 17, 2007

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 209433 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 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.

What specialty is Eloisa Williams?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-17.