Sheridan Healthcare™ announces the recent appointment of Frank Williams as a member of the Board of Directors of its parent company, Sheridan Holdings. Williams currently serves as Executive Chairman of The Advisory Board Company (NASDAQ: ABCO), joining the company as Executive Vice President in 2000 and holding the position of Chief Executive Officer and Director from 2001 to early 2008. Earlier in his career, Williams served as President of OnCall Healthcare Communications, General Manager of Vivra Orthopedics and as a consultant at Bain & Company.