Dr. Changfu Peng

Anxious to return to the Midwest, Dr. Drewry felt The Iowa Clinic was a perfect fit because of the positive culture, great team attitude, and patient-first mentality. He enjoys the challenges of internal medicine and not knowing what each day will bring. Dr. Drewry is rated as an Advanced provider by MediFind in the treatment of Gangrene. His top areas of expertise are Crohn's Disease, Gangrene, Type 2 Diabetes (T2D), Gastrostomy, and Endoscopy.

Alan Hilgerson is a primary care provider, practicing in Internal Medicine in Des Moines, Iowa. Dr. Hilgerson is rated as an Experienced provider by MediFind in the treatment of Gangrene. His top areas of expertise are Hemiplegia, Chronic Polyradiculoneuritis, Miller-Fisher Syndrome, and Guillain-Barre Syndrome. Dr. Hilgerson is currently accepting new patients.

Dr. Sarah Tallman is an Internist at The Iowa Clinic‘s West Des Moines Campus. She received her medical degree from Des Moines University and completed her residency at the Medical College of Wisconsin. She is Board Certified in Internal Medicine and a member of the American College of Physicians, American Osteopathic Association and American Medical Association. Dr. Tallman is rated as an Advanced provider by MediFind in the treatment of Gangrene. Her top areas of expertise are Hypothyroidism, Obesity in Children, Glucocorticoid-Remediable Aldosteronism, Bone Graft, and Vertebroplasty.