We offer a full range of psychiatric services treating children, adolescents and adults with mood disorders, such as depression and bipolar disorder, anxiety disorders, attention disorders, thought disorders and more. Our team offers specialized services for cardiac patients, pregnant and post-partum women and is experienced in serving the LGBTQ community.

Our in-house psychiatry team also collaborates with our roster of clinical staff to provide efficient consultation when counseling clients need medication and/or medication adjustments.

To make an appointment:

Our psychiatry team:

Geoffrey Hills, D.O. is a psychiatrist who attended medical school at Des Moines University and residency at the University of Wisconsin Madison.  His practice includes treatment of adolescents and adults with mood problems, anxiety and thought disorders.  He has particular interest and experience working with the LGBTQ community and persons living with HIV. Prior to attending medical school, Geoffrey received a B.A. in music at Vassar College and worked for several years as a violinist, composer, music engraver and editor in New York City.  He is an unapologetic science fiction and fantasy geek.


Susan Koehler, P.A.-C., brings over 15 years of experience as a psychiatry physician assistant. Susan is a graduate of Des Moines University and the University of Minnesota. She has been awarded the NCCPA Certificate of Added Qualifications in Psychiatry. Susan’s general psychiatry practice includes treatment of children, adolescents, and adults with mood disorders, such as depression and bipolar disorder, anxiety disorders, attention disorders, and thought disorders. She sees male and female patients of all ages and has a special interest in women’s health psychiatry. An initial appointment with Susan will include a thorough evaluation and specific treatment recommendations. Follow-up appointments will monitor for therapeutic response and medication side effects, with goals of symptom remission, continued stability, and relapse prevention.

Abigail Schiltz, P.A.-C., is a Psychiatry Physician Assistant. Abigail received her undergraduate degree from the University of Iowa and completed her graduate degree in Master of Science in Physician Assistant studies from Des Moines University. She recently completed a residency training program in family medicine at the University of Iowa where she found her passion in psychiatry. Her practice includes treatment of male and female patients of all ages with mood disorders, anxiety disorders, attention disorders and thought disorders. Abigail values faith and family and enjoys staying physically active with running and yoga.

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