Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leonard Aaron Levis, PHD

Psychologist in Oakland, CA · enumerated 2007.

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

National Provider Identifier

1588702930

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Registry record

Entity type Individual (Type 1)

Name Leonard Aaron Levis

Credential PHD

Sex Male

Practice address 3301 E 12th St Ste 259, Oakland, CA, 94601

Phone (510) 269-9030

Fax (510) 269-9031

Enumeration date Feb 1, 2007

Last updated in NPPES Feb 15, 2018

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY7756 (CA) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 7756 (CA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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

What is the NPI number for Leonard Levis?

The National Provider Identifier (NPI) for Leonard Levis is 1588702930, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leonard Levis practice?

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

Other providers at this practice address

Browse all →

Westcoast Children'S Clinic Community/Behavioral Health Agency · Oakland, CA NPI 1558424374 Audrey Rosenberg Psychologist · Oakland, CA NPI 1952456386 Neferkare Khemre Counselor · Oakland, CA NPI 1699821348 Anjanette Genovese Clinical Psychologist · Oakland, CA NPI 1104962075 Erin Rosenblatt Psychologist · Oakland, CA NPI 1598801474 Christine Benvenuto Marriage & Family Therapist · Oakland, CA NPI 1649317074 Paul Moore Clinical Psychologist · Oakland, CA NPI 1104964386 Hasse Leonard-Pagel Clinical Psychologist · Oakland, CA NPI 1790823144

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-15.