Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mary Kelso, Ph.,D. Inc

Clinical Psychologist in Thousand Oaks, CA · enumerated 2007 · authorized official Mary Kelso, Psychologist.

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

National Provider Identifier

1164566881

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Registry record

Entity type Organization (Type 2)

Legal business name Mary Kelso, Ph.,D. Inc

Practice address 325 E Hillcrest Dr, Ste 115, Thousand Oaks, CA, 91360

Phone (805) 379-9600

Fax (951) 245-0309

Enumeration date Feb 16, 2007

Last updated in NPPES Sep 28, 2007

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY10466 (CA) Primary

Authorized official

Name Mary Kelso

Title Psychologist

Phone (805) 379-9600

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-09-28. Verify at npiregistry.cms.hhs.gov.

Where is Mary Kelso, Ph.,D. Inc located?

The practice location on file with NPPES is in Thousand Oaks, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-28.