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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alyssa Leon

Behavior Analyst in Corona, CA · enumerated 2020 · practices at Andy Yang, MD, Inc.

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

National Provider Identifier

1841817103

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Registry record

Entity type Individual (Type 1)
Name Alyssa Leon
Sex Female
Practice address 802 Magnolia Ave Ste 202, Corona, CA, 92879
Phone (951) 686-2020
Enumeration date Jul 1, 2020
Last updated in NPPES Jul 1, 2020

Taxonomy & licenses

103K00000X Behavior Analyst 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.

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Frequently asked questions

Is NPI 1841817103 active?
Yes, as of the latest NPPES snapshot, NPI 1841817103 is active (record last updated 2020-07-01).
How do I verify Alyssa Leon's NPI record?
Cross-check NPI 1841817103 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-01.