Hillcrest Mental Health Center. Nursing (Nurse Practitioner), Psychology • 2 Providers. 200 Mercy Dr Ste 200, Dubuque IA, 52001. Make an Appointment. (563) 582-0145. Hillcrest Mental Health Center is a medical group practice located in Dubuque, IA that specializes in Nursing (Nurse Practitioner) and Psychology. Providers Overview Location ....