Amends the Mid-Illinois Medical District Act. Expands the boundaries of the Mid-Illinois Medical District. Makes changes to the powers of the Mid-Illinois Medical District Commission. Requires the Commission to hold a regular meeting on the second Thursday of February in even-numbered years for the election of a President, Vice-President, Secretary, and Treasurer from among its members and to hold meetings annually for the adoption of a budget and for other business purposes (rather than holding annual meetings for all purposes). Provides that the Commission may not acquire property between 11th Street on the east, Madison Street on the north, Walnut Street on the west, and South Grand Avenue on the south by exercising the right of eminent domain under the Eminent Domain Act. Authorizes the Commission to construct or cause to be constructed, among other things, housing, educational buildings, and research facilities. Requires the Commission's master plans to be delivered to (rather than approved by) the advisory council and the Springfield city council.