Nassau University Medical Center and Stony Brook University Hospital expect to hear news within the next few months that could mean hundreds of millions of dollars for Long Island and fundamentally change how they and scores of other local health care organizations do business. Both have been designated lead organizations on Long Island in the state's Delivery System Reform Incentive Payment, or DSRIP, program. Part of the state's attempt to overhaul the health care system to improve care for low-income patients, DSRIP will allocate $6.42 billion to safety net or public hospitals and their community collaborators statewide over the next five years.