Massachusetts · boston For Subscribers Health insurance rates to spike for 300,000 in Mass. merged market By State House News Service August 27, 2015 · 9:04 AM EDT · Updated January 16, 2025 12:00 AM · 2 min read read Advertisement Written by Michael P. Norton STATE HOUSE — Health insurance base rates are poised to spike for about 300,000 people in Massachusetts. Written by Michael P. Norton STATE HOUSE — Health insurance base rates are poised to spike for about 300,000 people in Massachusetts.… Advertisement