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Erin Mary O'Brien, FNP-C

Family Nurse Practitioner in North Andover, MA · enumerated 2019 · practices at Zaheen Medical Center LLC.

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

National Provider Identifier

1225680747

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Registry record

Entity type Individual (Type 1)
Name Erin Mary O'Brien
Credential FNP-C
Sex Female
Practice address 231 Sutton St Ste 1a, North Andover, MA, 01845
Phone (978) 655-1042
Enumeration date Jul 15, 2019
Last updated in NPPES Oct 2, 2019

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN2320796 (MA) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2320796 (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

Where does Erin O'Brien practice?
The practice location on file with NPPES is in North Andover, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Erin O'Brien?
The National Provider Identifier (NPI) for Erin O'Brien is 1225680747, 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 2019-10-02.