Dermatology Central Iowa Pella Marshalltown Ottumwa 515-644-3400 Dr. Chad Stocker Kendra Perry, ARNP Expert Care, Close to Home NOW ACCEPTING NEW PATIENTS Same Day and Same Week Appointments Available. Schedule your exam today! Dermatology Central Iowa Pella Marshalltown Ottumwa 515-644-3400 Dr. Chad Stocker Kendra Perry , ARNP Expert Care , Close to Home NOW ACCEPTING NEW PATIENTS Same Day and Same Week Appointments Available . Schedule your exam today !