Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marbell H. Alvarez

Counselor in Santa Rosa, CA · enumerated 2007.

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

National Provider Identifier

1952520819

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Registry record

Entity type Individual (Type 1)

Name Marbell H. Alvarez

Sex Female

Practice address 1200 College Ave, Santa Rosa, CA, 95404

Phone (707) 568-2300

Enumeration date Apr 25, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Marbell Alvarez practice?

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

What is the NPI number for Marbell Alvarez?

The National Provider Identifier (NPI) for Marbell Alvarez is 1952520819, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.