David Cornelder, DO Emergency Room Director

Emergency Room Director

David Cornelder, DO, joined Mahaska Health as the Emergency Room Medical Director in March of 2020, and his calming presence serves as a great asset to the Emergency Services care team. Cornelder is an Oskaloosa native who began his career at Mahaska Health as a respiratory therapist. In 2005, he took a break from respiratory…

Bruce Buchsbaum, MD Nephrology

Dr. Bruce Buchsbaum is at Mahaska Health the 2nd Friday every month. To schedule an appointment, call Mahaska Health at 641.672.3360. Specialty Nephrology Board Status American Board of Internal Medicine, Nephrology Education University of Michigan / Wayne State School of Medicine Residency Sinai Hospital of Detroit Internal Medicine Fellowship University of Michigan, Nephrology Location Visiting Specialist,…

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…

Mark Beers, DPM

Podiatrist Mark Beers, DPM, practices full time at Mahaska Health. He has been caring for feet in the Oskaloosa area for more than 25 years. Dr. Beers partners closely with the Certified Diabetes Education and Wound Ostomy Care professionals, providing an all-encompassing approach to foot health. In his spare time, Dr. Beers enjoys spending time…