Medical Nutrition Therapy

Registered Dietitian, Certified Diabetes Care and Education Specialist Specialties Diabetes Education Medical Nutritional Therapy Board Status Commision on Dietetic Registration Education University of Tennessee at Martin, Martin, TN Location Mahaska Health, Oskaloosa, IA

Geriatric Care

Lisa Nelson, ARNP, provides Geriatric and Skilled Nursing care at Mahaska Health. For Lisa, she was led to providing geriatric care while she was completing her nurse practitioner degree at the University of Iowa in 2003. Her grandmother received care at a long-term care facility, and she realized quickly that she wanted to provide this…

Melissa Lamb, ARNP

Allergy/ Immunology/ Pulmonology

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, CRNA

Pain Management, Anesthesiology

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.…

Family Practice

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…