The Joint Commission has tapped four new executives, including two C-suite leaders. 

Duluth, Minn.-based Essentia Health has tapped Tamm Kritzer as its new senior vice president of hospital relations at Duluth-based St. Mary's Medical Center. 

Katherine Vergos, RN, was selected president of Dignity Health's Las Vegas market and president and CEO of the Siena Hospital Campus in Henderson, Nev.

Jill Owens, MD, will step down as president of Olean, N.Y.-based Upper Allegheny Health System to return to private medical practice, The Bradford Era reports. 

Cleveland Clinic appointed Lisa Yerian, MD, chief clinical and operational improvement officer and vice president.

Mike Erickson, president of MyMichigan Medical Center Alpena, was named the future leader of three Michigan hospitals that St. Louis-based Ascension currently operates.

Jay deVenny was appointed CEO of Medical City Dallas.

Andrea Burch, BSN, RN, was named president of Lutheran Medical Center in Wheat Ridge, Colo., part of Salt Lake City-based Intermountain Health.

Wausau, Wis.-based Aspirus Health has named David Bittner senior vice president of enterprise development, according to an April 11 LinkedIn post from the health system. 

Hospitals and health systems are making changes in their leadership ranks based on organizational needs in today's healthcare environment. Some of the changes have involved adding inaugural roles to their C-suites. 

VillageMD — majority owned by Walgreens Boots Alliance — has selected Jim Murray as president and COO, effective April 1.

PeaceHealth has named Kim Ruscher, MD, chief medical officer of its Oregon network, the Vancouver, Wash.-based system announced April 9. 

Sacramento, Calif.-based Sutter Health appointed Craig Miller as its first system-level service line president.

Wallingford, Conn.-based Gaylord Specialty Healthcare recently appointed two executive positions.

Gillette, Wyo.-based Campbell County Health appointed John Houk, DO, chief medical officer.

Franciscan Health Olympia Fields (Ill.) has added two new leaders, according to an April 10 news release shared with Becker's. 

Oakland, Calif.-based Kaiser Permanente has tapped Edmund Chan as president of the Kaiser Foundation Plan and Hospitals Hawaii, effective April 28. He will succeed Greg Christian once he retires May 1.

Johnson City, Tenn.-based Ballad Health has named Shane Hilton CFO, effective immediately, to replace Lynn Krutak, who will retire June 30.

Roshanda Thomas has resigned as CEO of Memorial Medical Center in Port Lavaca, Texas. 

Austin, Texas-based St. David's HealthCare has appointed Amy Russell, MSN, chief nursing officer of St. David's North Austin Medical Center, effective April 8.