Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Miss Alexandria Margaret Tuomainen, LMFT

Marriage & Family Therapist in Spring Valley, CA · enumerated 2016.

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

National Provider Identifier

1144779109

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Registry record

Entity type Individual (Type 1)

Name Miss Alexandria Margaret Tuomainen

Credential LMFT

Sex Female

Practice address 3845 Spring Dr Ste 16, Spring Valley, CA, 91977

Phone (619) 797-1090

Enumeration date Sep 30, 2016

Last updated in NPPES Jun 11, 2021

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License AMFT106823 (CA) Secondary

171M00000X Case Manager/Care Coordinator Other Service Providers Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 122917 (CA) Primary

LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT 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 NPI 1144779109 active?

Yes, as of the latest NPPES snapshot, NPI 1144779109 is active (record last updated 2021-06-11).

How do I verify Alexandria Tuomainen's NPI record?

Cross-check NPI 1144779109 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-11.