Oncology Medical Director

Dr. Daniel Kollmorgen serves as the Staff Surgeon, Medical Director of Oncology Services, and Vice President of Medical Affairs. He has over 20 years of experience as a physician and it is his passion to bring expert, compassionate care to his community. Dr. Kollmorgen studied medicine at the University of Iowa and completed a surgical…

Dr. Jesse Van Maanen joined the Mahaska Health surgical team as a Board Certified General Surgeon. Dr. Van Maanen grew up in Pella and Leighton and enjoyed the small communities in which he lived for their rural opportunities, close-knit friendships, and family values. He was first exposed to medicine and surgery when he had to…

Paul Riggs, MD, FACS

General Surgeon

Paul Riggs, MD, FACS, has been serving the Mahaska community since 1985. A native of Illinois and after receiving his training in Kansas, Dr. Riggs chose Mahaska county because of its need for a surgeon to serve the community. Dr. Riggs has always enjoyed science, biology and chemistry, which lead him toward a pre-med education.…

Tim Breon, MD, FACS Chief Medical Officer, General Surgeon

Chief Medical Officer, General Surgeon

Chief Medical Officer and General Surgeon Tim Breon, MD, FACS, is an experienced, Board Certified Surgeon specializing in traditional, laparoscopic and robotic-assisted surgical treatments. Dr. Breon commonly performs operations on the colon as well as the gallbladder, female anatomy and appendix. Dr. Breon grew up on a farm near Hedrick, Iowa. He chose to practice…