Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Ruth Ann Alpert, AMFT, APCC

Marriage & Family Therapist in Downey, CA · enumerated 2023 · practices at Inland Psychiatric Medical Group, Inc..

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

National Provider Identifier

1639952559

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Registry record

Entity type Individual (Type 1)

Name Mrs. Ruth Ann Alpert

Credential AMFT, APCC

Sex Female

Practice address 10800 Paramount Blvd Ste 306, Downey, CA, 90241

Phone (562) 821-1491

Enumeration date Aug 15, 2023

Last updated in NPPES Aug 30, 2023

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 140904 (CA) Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 14355 (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

Is NPI 1639952559 active?

Yes, as of the latest NPPES snapshot, NPI 1639952559 is active (record last updated 2023-08-30).

How do I verify Ruth Ann Alpert's NPI record?

Cross-check NPI 1639952559 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-30.