Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Alyssa Marie Nisson
Behavior Analyst in Irvine, CA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942922380
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Registry record
Entity type Individual (Type 1)
Name Mrs. Alyssa Marie Nisson
Sex Female
Practice address 1063 Mcgaw Ave Ste 100, Irvine, CA, 92614
Phone (657) 207-5542
Enumeration date Sep 13, 2022
Last updated in NPPES Sep 13, 2022
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 specialty is Alyssa Nisson?
Alyssa Nisson is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-13.