Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Melissa Guzek, BCBA
Behavior Analyst in Duxbury, MA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1457835522
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Registry record
Entity type Individual (Type 1)
Name Melissa Guzek
Credential BCBA
Sex Female
Practice address 20 Tremont St Ste 31, Duxbury, MA, 02332
Phone (339) 499-8464
Enumeration date Sep 24, 2018
Last updated in NPPES Sep 24, 2018
Taxonomy & licenses
103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-18-31900 (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 Melissa Guzek?
The National Provider Identifier (NPI) for Melissa Guzek is 1457835522, a Type 1 (individual) record in the CMS NPPES registry.
Where does Melissa Guzek practice?
The practice location on file with NPPES is in Duxbury, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-24.