The outside of the Geisinger hospital in Lewistown. (Photo by Sydney Roach/WPSU)Geisinger and Risant Health are asking the Pennsylvania Insurance Department to lower the amount of money they have to keep in reserves, which could give the health system access to another $100 million. SEIU Healthcare, the state’s largest healthcare workers’ union, wants to know what Geisinger will do with that money. Matthew Yarnell, SEIU’s president, said the uni…