Dr. Alan D. Hilgerson

Lena Rydberg, DO is board certified in Internal Medicine and a member of the American Medical Association and American College of Physicians. Prior to joining The Iowa Clinic. Dr. Rydberg practiced medicine in Tucson, Arizona. Dr. Rydberg believes communication is one of the most important aspects of medicine. She chose Internal Medicine because she enjoys building the close relationships that are found in Primary Care and she has always had a special interest in adult medicine. Dr. Rydberg is rated as an Experienced provider by MediFind in the treatment of Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH). Her top areas of expertise are Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH), Type 2 Diabetes (T2D), Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Robin Vande-Voort is a primary care provider, practicing in Internal Medicine in Prairie City, Iowa. Dr. Vande-Voort is rated as an Advanced provider by MediFind in the treatment of Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH). Her top areas of expertise are Urinary Tract Infection in Children, Urinary Tract Infection (UTI), Colorectal Cancer, and Familial Colorectal Cancer. Dr. Vande-Voort is currently accepting new patients.

Changfu Peng is a primary care provider, practicing in Internal Medicine in Des Moines, Iowa. Dr. Peng is rated as an Advanced provider by MediFind in the treatment of Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH). His top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), End-Stage Renal Disease (ESRD), Sepsis, Endoscopy, and Gastrostomy. Dr. Peng is currently accepting new patients.