Real life hit Lisa S. Katz in a big way when she was in law school. As she learned about health law as a student at DePaul University College of Law, Katz’s grandmother was dealing with some managed care issues of her own. Katz leaned into the convergence, deciding early on to build her practice around health-care law.The 38-year-old Polsinelli shareholder currently focuses on issues dealing with health-care finance …