Charles Stokes begins as chairman-elect of the American College of Healthcare Executives, and other news makers

Charles Stokes, 62, executive VP and COO at Memorial Hermann Health System, based in Houston, has begun his term as chairman-elect of the American College of Healthcare Executives. He will take over in March 2017 for newly installed Chairman Edward Lamb, 58, Western Division president for Iasis Healthcare.

Dr. Ann Errichetti was named chief operations and academic officer at Presence Health, a Chicago-based hospital system. In addition to oversight of acute-care operations, she will also be responsible for Presence Health Resurrection University and its graduate medical education program.

Errichetti, a cardiologist, previously served as CEO of St. Peter's Hospital and Albany Memorial Hospital, both based in Albany, N.Y., and as VP of the Trinity Health Albany regional network from 2012 to 2016.

Kevin Sexton has announced his retirement as president and CEO of Washington, D.C.-based Holy Cross Health. He will remain with the system until a successor is named.

Sexton, 67, took the helm at Holy Cross in 1998, and in 2012 began serving as president and CEO of the Maryland region of Trinity Health. During his tenure, he reorganized Holy Cross Health, including forming the Holy Cross Health Network, in preparation for the 2014 opening of Holy Cross Germantown Hospital, the first new hospital in Montgomery County in 35 years.

Gar Atchison has been named CEO of Frye Regional Medical Center, a Duke LifePoint Healthcare hospital in Hickory, N.C.

Atchison, 50, had been interim CEO during the transition to Duke LifePoint, and previously served as COO of the facility. He has been a member of Frye's senior leadership team since 2011.

Paul Milton was named president and CEO of Ellis Medicine in Schenectady, N.Y. He has been acting CEO since February 2015, following the retirement of James Connolly, who served from 2007 until 2015. Milton, 58, had served as executive VP and COO at Ellis since 2008. He is also the former COO of Norwalk (Conn.) Hospital.

Dr. Kirsten Bibbins-Domingo has been named chair of the U.S. Preventive Services Task Force, an independent panel of 16 volunteers that provides Congress with evidence-based recommendations on clinical preventive services. She replaces immediate past chair Dr. Albert Siu, a New York geriatrician and internist.

Bibbins-Domingo is currently the Dr. Lee Goldman Endowed Chair in Medicine at the University of California at San Francisco, where she serves as professor of medicine, epidemiology and biostatistics. She is also a general internist at San Francisco General Hospital. As director of the facility's Center for Vulnerable Populations, she leads research on innovation, health policy and community engagement in low-income communities.

She became a member of the task force in 2010 and was appointed vice chair in March 2014.