Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alexandra Simon
Social Worker in San Francisco, CA · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841121019
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Registry record
Entity type Individual (Type 1)
Name Alexandra Simon
Sex Female
Practice address 1220 Noe St, San Francisco, CA, 94114
Phone (628) 900-4144
Enumeration date May 27, 2026
Last updated in NPPES May 27, 2026
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
Is NPI 1841121019 active?
Yes, as of the latest NPPES snapshot, NPI 1841121019 is active (record last updated 2026-05-27).
How do I verify Alexandra Simon's NPI record?
Cross-check NPI 1841121019 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-27.