Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jon-Erik O'Neil

Counselor in Braintree, MA · enumerated 2018.

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

National Provider Identifier

1578054789

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Registry record

Entity type Individual (Type 1)

Name Jon-Erik O'Neil

Sex Male

Practice address 400 Washington St Ste 303, Braintree, MA, 02184

Phone (781) 843-3683

Enumeration date May 23, 2018

Last updated in NPPES May 23, 2018

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers 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.

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Frequently asked questions

Where does Jon-Erik O'Neil practice?

The practice location on file with NPPES is in Braintree, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Jon-Erik O'Neil?

The National Provider Identifier (NPI) for Jon-Erik O'Neil is 1578054789, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-23.