Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Joan Stillman Mccormac, PAC
Physician Assistant in Downey, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1457556490
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Registry record
Entity type Individual (Type 1)
Name Mrs. Joan Stillman Mccormac
Credential PAC
Sex Female
Practice address 7601 Imperial Hwy, Downey, CA, 90242
Phone (562) 401-6210
Enumeration date Jun 19, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA15308 (CA) 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.
Frequently asked questions
How do I verify Joan Mccormac's NPI record?
Cross-check NPI 1457556490 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1457556490 active?
Yes, as of the latest NPPES snapshot, NPI 1457556490 is active (record last updated 2007-07-08).
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.