Massachusetts-based doctors, professors, entrepreneurs, and hospital IT experts are using $20 billion of stimulus money to help shape the electronic medical record landscape for the country as a whole. According to John Halamka, chief information officer at CareGroup Healthcare System, "The average use of EMRs in the U.S. is between 2 and 20%. In Massachusetts, we're somewhere between 30 and 50%, so we've had a fair degree of experience with what works and what doesn't work."