Richard Ha, MD, retired after 43 years of serving as a cardiologist at Blessing Health System's Hannibal (Mo.) Clinic, Muddy River News reported July 18.
Dr. Ha was the first cardiologist in Hannibal, and he was the only cardiologist in the city for 10 years. He introduced a variety of technology to patients seeking cardiac care in the region, including the pacemaker.
"I thoroughly enjoyed practicing in this area," Dr. Ha said. "Not only have people been my patients, they are my neighbors and friends."