Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Casey Alynn Rosenlieb, SA COUNSELOR

Addiction (Substance Use Disorder) Counselor in Los Osos, CA · enumerated 2025.

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

National Provider Identifier

1689479099

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Registry record

Entity type Individual (Type 1)

Name Mrs. Casey Alynn Rosenlieb

Credential SA COUNSELOR

Sex Female

Practice address Los Osos, CA, 93402

Phone (805) 234-8915

Enumeration date Feb 18, 2025

Last updated in NPPES Feb 18, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License B9708652 (CA) 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 Casey Rosenlieb practice?

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

What is the NPI number for Casey Rosenlieb?

The National Provider Identifier (NPI) for Casey Rosenlieb is 1689479099, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-18.