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Daniel O'Brien

Psychiatric/Mental Health Nurse Practitioner in Falmouth, MA · enumerated 2018 · practices at Compass Circle Behavioral Health LLC.

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

National Provider Identifier

1831687144

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Registry record

Entity type Individual (Type 1)
Name Daniel O'Brien
Sex Male
Practice address 316 Gifford St Ste 1, Falmouth, MA, 02540
Phone (857) 328-0724
Fax (949) 703-7789
Enumeration date Apr 23, 2018
Last updated in NPPES Aug 21, 2025

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2320615 (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.

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Frequently asked questions

What is the NPI number for Daniel O'Brien?
The National Provider Identifier (NPI) for Daniel O'Brien is 1831687144, a Type 1 (individual) record in the CMS NPPES registry.
Where does Daniel O'Brien practice?
The practice location on file with NPPES is in Falmouth, 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 2025-08-21.