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…

  Prior to entering medical residency, Dr. Ivy Melgarejo briefly worked as an emergency humanitarian response doctor for Doctors Without Borders and Save the Children and as a research doctor for the Philippine Cardio Genomics Project. She trained in the beautiful island of Hawaii for Internal Medicine and went to Pittsburgh for Nephrology and Transplant…

Paige Rastenburg OTD, OTR/L

Occupational Therapy

  Aaron Smith, DO, FACOS is a Board Certified, Fellowship-trained Urology Specialist. Dr. Aaron Smith provides expert urology care for Mahaska Health in coordination with University of Iowa Health Care, a national leader in diagnosing and treating bladder and urinary disorders. UI Health Care’s team-based approach to individualized patient care draws from medical and surgical…

Surgical Services,
Anesthesiology

Kyler Parkinson, CRNA, (nurse anesthetist) has a passion for his patient’s well-being and we are thankful to have him join the Mahaska Health family! Throughout the anesthesia process, Kyler is dedicated to helping every patient feel comfortable and that they have a positive experience. Both Kyler and his wife love being a part of small…