Rate and review Doctor Duffin on patientschoice.org. This physician has current office locations in Grand Rapids, MI and has been practicing for over years in their current profession. Post reviews on other Orthopaedic Surgeons who you have had positive or negative office visit experiences with in the past. PCA empowers the patient with information to help you make a more informed decision when choosing a qualified doctor in your area. If you think you have an excellent Orthopaedic Surgeon then show your appreciation and help nominate Doctor Duffin as a Patients' Choice Award winner.