Melissa Lamb, ARNP-BC specializes in the areas of allergy, immunology and pulmonology and has been with Mahaska Health since 2006. Lamb joined the team at Mahaska Health after 5 years of extensive pulmonary specialty experience at Mayo Clinic in Rochester, Minnesota. Melissa can empathize with patients because she has been on the patient side of…
Greg Kronenberg is a certified registered nurse anesthetist with over 20 years of nurse anesthesia experience and 10 years of pain management expertise. Greg practices integrative medicine which involves being open to any beneficial treatment options. He believes everyone’s experiences and beliefs are unique and therefore their treatment needs to be tailored to that individual.…
Gayle Johnson, ARNP joined Mahaska Health in November 2019. For more than 30 years, Gayle has been a caring nurse in Grinnell, Iowa. During her tenure there, she has worked in the Medical Surgical Unit as a charge nurse and served as clinical advisor for the medical surgical unit, intensive care unit, emergency department, and…
Tonya Johannes, DNP, ARNP-BC has been a nurse practitioner at Mahaska Health since 2016 and has served the healthcare field since 2003 in nursing home, hospital and clinical settings. Johannes grew up in Albia, IA and chose the medical field after spending an entire summer in a hospital helping to care for her grandmother. She…
Dr. Brad Hiatt who has served the Mahaska Health Community for over 15 years. Dr. Hiatt was born and raised in Iowa, and completed his undergraduate and residency at the University of Iowa, and serves as our Cancer Care and Infusion Center physician. As an Iowa native, Dr. Hiatt attended medical school at Des Moines…
