The appointments follow the completed terms of Evans Richardson, Sr. Kathy Buchheit and Thomas Merfeld, PhD, according to a Jan. 8 news release.
Ms. Bass recently retired as senior vice president and general counsel for Sonic and previously chaired SSM Health’s Oklahoma regional board of directors.
Dr. Hartenbach, a board-certified pediatrician and former board chair for Esse Health, currently serves as an associate professor of clinical pediatrics at Washington University School of Medicine.
SSM Health is a St. Louis-based health system serving Illinois, Missouri, Oklahoma, and Wisconsin.
