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 / CT

KAREN O'BRIEN

CLINICAL SOCIAL WORKER

Graduated: 2014

NPI: 1700243490

Practice Locations (2)

11 HICKORY RD

DERBY, CT 064182210

34 PARK ST, RM 168

NEW HAVEN, CT 065191187

Source: CMS National Downloadable File, September 2026.