SAN DIEGO--(BUSINESS WIRE)--XIFIN Inc., the financial cloud computing company revolutionizing the business of healthcare diagnostics from patient to payment, will host a free webinar, Rainmaking with a Cloud-based LIS: A Pathologist’s Perspective on Tuesday, April 21, 2015.   Who: Gregory S. Henderson, M.D., Ph.D. Vice Chair, Pathology Outreach and Affiliate Laboratory Affairs, Mount Sinai Health System; Founder and President, PathForceDx Joe Nollar, Director, LIS Product Development, XIFIN, In