| Find a Doctor | P | Stephan Pepple MD Stephan Pepple, MD Neonatology-Pediatrics Neonatology-Pediatrics Office Information Northern Indiana Neonatology Associates, PC. Located at Marion General Hospital 441 N. Wabash Ave. Marion, IN 46952 Get Directions (765) 660-6860 Find a Doctor Find A Service Pay My Bill Patient Estimator Tool