An internist with specific clinical experience in the fields of nephrology, emergency and hospital medicine, occupational medicine, outpatient primary care, and geriatric care, Dr. Rex Mahnensmith serves as chief medical officer of a federally qualified community health care center near his hometown of Simsbury, Connecticut. Before assuming this leadership role in January 2017, he served two years as a full-time primary care internist with this facility. Over the course of his career, Dr. Rex Mahnensmith has also served as a primary clinician and medical director with University Physicians in Providence Rhode Island and the Yale Medical Group in New Haven, Connecticut.