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

Ms. Ruth Tello-Di Leva, MS, BCBA

Behavior Analyst in San Gabriel, CA · enumerated 2012.

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

National Provider Identifier

1649533753

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Registry record

Entity type Individual (Type 1)

Name Ms. Ruth Tello-Di Leva

Credential MS, BCBA

Sex Female

Practice address San Gabriel, CA, 91776

Phone (626) 320-1317

Fax (626) 270-4225

Enumeration date Jun 22, 2012

Last updated in NPPES Jun 22, 2012

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

Taxonomy & licenses

103K00000X Behavior Analyst 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 Ruth Tello-Di Leva practice?

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

What is the NPI number for Ruth Tello-Di Leva?

The National Provider Identifier (NPI) for Ruth Tello-Di Leva is 1649533753, 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 2012-06-22.