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

Dr. Jack Robert Leggett Jr., PH.D.

Q: What is the NPI number for Jack Leggett?

The National Provider Identifier (NPI) for Jack Leggett is 1386893618, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Psychologist in Mission Viejo, CA · enumerated 2008.

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

National Provider Identifier

1386893618

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Registry record

Entity type Individual (Type 1)

Name Dr. Jack Robert Leggett Jr.

Credential PH.D.

Sex Male

Practice address Mission Viejo, CA, 92692

Phone (949) 951-1692

Enumeration date Sep 10, 2008

Last updated in NPPES Sep 10, 2008

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

Taxonomy & licenses

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers Secondary

103TA0400X Addiction (Substance Use Disorder) Psychologist Behavioral Health & Social Service Providers Secondary

103TA0700X Adult Development & Aging Psychologist Behavioral Health & Social Service Providers Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY16148 (CA) Primary

103TH0100X Health Service Psychologist Behavioral Health & Social Service Providers Secondary

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 Jack Leggett?

The National Provider Identifier (NPI) for Jack Leggett is 1386893618, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jack Leggett practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-10.