Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexandra Massimillo Webster, PSY.D.

Psychologist in Chino, CA · enumerated 2022.

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

National Provider Identifier

1205559473

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexandra Massimillo Webster

Credential PSY.D.

Sex Female

Practice address 14901 Central Ave, Chino, CA, 91710

Phone (909) 597-1821

Enumeration date Sep 22, 2022

Last updated in NPPES Apr 25, 2024

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 34588 (CA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alexandra Webster?

Alexandra Webster is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Nicole Jensen Clinical Psychologist · Chino, CA NPI 1770551749 Jonathan Cho Internal Medicine Physician · Chino, CA NPI 1235175936 Kirk Torres Family Medicine Physician · Chino, CA NPI 1295881175 Jason Churchwell Clinical Psychologist · Chino, CA NPI 1609909068 Robert Clinton Internal Medicine Physician · Chino, CA NPI 1265566699 Jasmin Allen Clinical Social Worker · Chino, CA NPI 1104950880 Tuan Hoang Internal Medicine Physician · Chino, CA NPI 1013122761 Hoan Nguyen Internal Medicine Physician · Chino, CA NPI 1952591653

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-25.