Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Shannon Lee Leason
Behavior Analyst in Chelmsford, MA · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477100816
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Registry record
Entity type Individual (Type 1)
Name Shannon Lee Leason
Sex Female
Practice address 315 Littleton Rd Fl 1, Chelmsford, MA, 01824
Phone (978) 856-8645
Enumeration date Aug 21, 2019
Last updated in NPPES Aug 21, 2019
Taxonomy & licenses
103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License S59200202 (MA) 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
What is the NPI number for Shannon Leason?
The National Provider Identifier (NPI) for Shannon Leason is 1477100816, a Type 1 (individual) record in the CMS NPPES registry.
Where does Shannon Leason practice?
The practice location on file with NPPES is in Chelmsford, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Sharlett Lima Behavior Analyst · Chelmsford, MA NPI 1992207419 Stephanie Mejia Behavior Analyst · Chelmsford, MA NPI 1841797107 Gianna Sencer Behavior Technician · Chelmsford, MA NPI 1265921282 Jennifer Plourde Behavior Technician · Chelmsford, MA NPI 1649756313 Meghna Kanthan Behavior Technician · Chelmsford, MA NPI 1740841386 Nina Riley Behavior Analyst · Chelmsford, MA NPI 1679126148 Caitlyn Moore Behavior Technician · Chelmsford, MA NPI 1275180762
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-21.