Koontz, Ian M., MD Specialty Adult Medicine Gender Male Location Dubuque, Iowa Clinic Grand River Medical Group, P.C. Multi-Specialty Clinic Address 1515 Delhi St, Suite 100, Dubuque, IA 52001 Phone Number 5635579111 Website Address http://www.grmg.health https://www.facebook.com/GrandRiverMedicalGroup/ https://twitter.com/GrandRiverMG