HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / MA

ERIN MARY O'BRIEN, NP

NURSE PRACTITIONER

Graduated: 2019

Offers telehealth

NPI: 1225680747

Practice Locations (1)

SIMON FAYNZILBERG MD PC

25 HIGHLAND AVE

NEWBURYPORT, MA 019503867

9784631000

Source: CMS National Downloadable File, September 2026.

ERIN O'BRIEN, NP | HealthCareAtlasUSA