Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Evan Gannon
Behavior Analyst in Portsmouth, NH · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609311083
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Registry record
Entity type Individual (Type 1)
Name Evan Gannon
Sex Male
Practice address 200 Griffin Rd Ste 5, Portsmouth, NH, 03801
Phone (800) 778-5560
Enumeration date Dec 21, 2016
Last updated in NPPES Dec 21, 2016
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 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.
What specialty is Evan Gannon?
Evan Gannon 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.
Other providers at this practice address
Browse all → Rebecca Walsh Behavior Analyst · Portsmouth, NH NPI 1740510544 Brianne Fredericks Behavior Analyst · Portsmouth, NH NPI 1609140128 Erin Aiello Behavior Analyst · Portsmouth, NH NPI 1356605513 Deborah Guarino Pediatric Occupational Therapist · Portsmouth, NH NPI 1588906531 Constellations Behavioral Services, LLC Pediatric Occupational Therapist · Portsmouth, NH NPI 1043613706 Constellations Behavioral Services Behavior Analyst · Portsmouth, NH NPI 1518355908 Jessica Tilley Behavior Analyst · Portsmouth, NH NPI 1346638699 Brittnay Duguay Behavior Analyst · Portsmouth, NH NPI 1023479490
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-21.