Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Rosemary Miller, RN

Addiction (Substance Use Disorder) Registered Nurse in Vallejo, CA · enumerated 2006.

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

National Provider Identifier

1003971623

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Registry record

Entity type Individual (Type 1)

Name Mrs. Rosemary Miller

Credential RN

Sex Female

Practice address 800 Sereno Dr., Vallejo, CA, 94589

Phone (707) 651-2610

Fax (707) 651-2608

Enumeration date Dec 26, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License 358538 (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 Rosemary Miller?

Rosemary Miller is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) 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 2007-07-08.