Who We Are - Medical Providers

Donner Dewdney, MD

Dr. Dewdney graduated from the University of Ontario and completed his fellowship at the Menninger School for Psychiatry. Dr. Dewdney founded Child Psychiatry Associates P.C. in West Des Moines. He has served as an adjunct professor at Des Moines University and the University of Iowa. He has also served as Medical Director for Iowa Lutheran Hospital’s mental health units and Medical Director Emeritus for the residential campus at Orchard Place, a Psychiatric Medical Institute for Children. Dr. Dewdney has published numerous articles and has received many awards for his life-long commitment of helping children, adolescents, and adults living with mental illness.

Location: Cropp Clinic, Des Moines.


Marcia Ring, Psychiatric Nurse Practitioner-Board Certified

My very first job as a nurse’s aide when I was 17 years old was in a locked psychiatric facility that had a locked unit on it.  The residents were the most ill of the mentally ill. I fell in love with nursing and I fell in love with my clients and psychiatry. Now, after 40 years of being a nurse and 16 years at the advanced practice level, I still love both. I connect to people with my heart, and treat all my clients with the greatest care and compassion. I do not believe I am the boss, but rather a partner to walk alongside my client during his/her healing journey for as long as he/she chooses.

I have earned a PhD in nursing and taught in the university for many years. I also have a Master’s Degree in Psychiatric Mental Health Nursing. Both of these degrees were earned at The Catholic University of America in Washington, DC. I hail from the east coast, but love living in Iowa. I plan to retire here.

Location: Tele-Medicine, Cropp Clinic and Eyerly Ball Clinic Ames


Steven Stokes, Psychiatric Nurse Practitioner - Board Certified

I became interested in psychiatry as a student nurse at Washington State University. As a Registered Nurse, my professional interests found me a place on an adult psychiatric inpatient unit; apart of a team of dedicated mental health providers. Enjoyment came from sharing the stories and struggles of patients recovering from acute and chronic mental illness. I jumped at the opportunity to return to WSU, continue my education and become a Psychiatric Nurse Practitioner in 2010. After five years of psychiatric staff service at the Washington State Department of Corrections, I eagerly joined the Eyerly Ball team on May 1, 2016. My passion is to meet and form healthy therapeutic relationships with our patients. I continuously look forward to serving the communities of Ames and Des Moines. I currently live in Washington State.

Location: Tele-Medicine, Cropp Clinic and Eyerly Ball Clinic in Ames.