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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Elena Denise Williams

Case Manager/Care Coordinator in San Ramon, CA · enumerated 2011.

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

National Provider Identifier

1891078978

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Registry record

Entity type Individual (Type 1)
Name Ms. Elena Denise Williams
Sex Female
Practice address 136 Valdivia Cir, San Ramon, CA, 94583
Enumeration date Sep 24, 2011
Last updated in NPPES Oct 12, 2023

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary
171M00000X Case Manager/Care Coordinator 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 is the NPI number for Elena Williams?
The National Provider Identifier (NPI) for Elena Williams is 1891078978, a Type 1 (individual) record in the CMS NPPES registry.
Where does Elena Williams practice?
The practice location on file with NPPES is in San Ramon, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-12.