American CareSource Holdings, Inc. announced that Richard W. Turner, PhD, its President, Chief Executive Officer and Chairman of the Board of Directors, died unexpectedly on April 12, 2015 after a brief illness. The Board of Directors appointed John Pappajohn, a director of the company, as Chairman of the Board and acting Chief Executive Officer. Dr. Turner contributed to the success of several publicly-traded companies, and was a generous philanthropist.

He is survived by his wife, Deidre and two sons, Robert and Finley.