Graduated: 1997
NPI: 1568415180
Practice Locations (2)
ROBERT J OBRIEN JR MD AND ASSOC PC
140 COMMONWEALTH AVE, SUITE 201
DANVERS, MA 019233625
7817294878
ROBERT J OBRIEN JR MD AND ASSOC PC
955 MAIN ST, SUITE G6
WINCHESTER, MA 018901992
7817294878
Source: CMS National Downloadable File, September 2026.