Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Christine Alexander, PPS

School Psychologist in Stevenson Ranch, CA · enumerated 2018.

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

National Provider Identifier

1386120939

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Christine Alexander

Credential PPS

Sex Female

Practice address 25820 Carroll Ln, Stevenson Ranch, CA, 91381

Phone (661) 291-4070

Fax (661) 291-4071

Enumeration date Jul 17, 2018

Last updated in NPPES Jul 17, 2018

Taxonomy & licenses

103TS0200X School Psychologist 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 Mary Christine Alexander practice?

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

What is the NPI number for Mary Christine Alexander?

The National Provider Identifier (NPI) for Mary Christine Alexander is 1386120939, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-17.