Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Eileen D. Boynton
Behavior Analyst in Watertown, MA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689020141
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Registry record
Entity type Individual (Type 1)
Name Eileen D. Boynton
Sex Female
Practice address 51 Water St, Suite 200, Watertown, MA, 02472
Phone (617) 923-7575
Enumeration date May 13, 2016
Last updated in NPPES May 13, 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
Where does Eileen Boynton practice?
The practice location on file with NPPES is in Watertown, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Eileen Boynton?
The National Provider Identifier (NPI) for Eileen Boynton is 1689020141, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-13.