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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John Benjamin Barnes, PHD

Cognitive & Behavioral Psychologist in Sudbury, MA · enumerated 2019 · practices at Eastern Massachusetts Personalized Behavioral Health.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1417419060

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Registry record

Entity type Individual (Type 1)
Name John Benjamin Barnes
Credential PHD
Sex Male
Practice address Sudbury, MA, 01776
Phone (781) 413-1215
Enumeration date Apr 3, 2019
Last updated in NPPES Dec 8, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier Type State Issuer
11044 Other MA STATE LICENSE

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.

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Frequently asked questions

What is the NPI number for John Barnes?
The National Provider Identifier (NPI) for John Barnes is 1417419060, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Barnes practice?
The practice location on file with NPPES is in Sudbury, MA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-08.