A New York hospital group is set to announce a sizable investment intended as a linchpin in the group's $400 million commitment to digitize patient records throughout its system, including 13 hospitals. North Shore-Long Island Jewish Health System plans to offer its 7,000 affiliated doctors subsidies of up to $40,000 each over five years to adopt digital patient records. That would be in addition to federal support for computerizing patient records, which can total $44,000 per doctor over five years.