Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alexander Matthew Simpson
Behavior Technician in Downey, CA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578314696
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Registry record
Entity type Individual (Type 1)
Name Alexander Matthew Simpson
Sex Male
Practice address 10445 Lakewood Blvd, Downey, CA, 90241
Phone (800) 249-1266
Enumeration date Mar 27, 2024
Last updated in NPPES Mar 27, 2024
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Alexander Simpson?
The National Provider Identifier (NPI) for Alexander Simpson is 1578314696, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alexander Simpson practice?
The practice location on file with NPPES is in Downey, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-27.