Federal reimbursements for surgical procedures swing widely among Connecticut hospitals, a C-HIT analysis of available Medicare data shows. Yale-New Haven, Bridgeport and Windham hospitals were consistently among the top five in Medicare reimbursements, according to the data. Experts say the variation in Medicare payments is due to a variety of factors, including the type of hospital (teaching or non-teaching), regional wages and salaries, the income mix and sickness of patients and the number of tests and services provided.