About Us Mission : Staff : FAQ's


The Stadter Center's team views our patients as a "whole" person, treating the cognitive, cultural, emotional, physical and social issues they face. Conditions often require the cross treatment of specialists, which is why our multidisciplinary team works together to empower patients to make positive, life changing decisions. The positive treatment The Stadter Center provides resonates through families, school systems, medical organizations and communities.

  • Dr. Thomas Peterson, MD, is a founding partner, Chief Executive Officer and Medical Director of The Stadter Center. Dr. Peterson received his Medical Doctorate at the University of North Dakota School of Medicine in Grand Forks, North Dakota. His specialty is General Psychiatry and he completed his Psychiatry Resident Program in 1994 at the University of North Dakota School of Medicine. After founding the Center of Psychiatric Care, a private outpatient mental health clinic, he in conjunction with others, founded The Stadter Center, a private inpatient mental health hospital, which opened in May of 2000. Dr. Peterson is the hospital's Chief Executive Officer and Medical Director, and works closely with the hospital's administrative work team. A member of the American Psychiatric Association, he received his Board Certification in Psychiatry in 1996. A true entrepreneur, Dr. Peterson is involved in the development of other medical projects to enhance the medical park upon which The Stadter Center currently resides.


  • Derek Carlson, MD, Board Certified Child and Adolescent Psychiatrist, has over 13 years of practice experience.  He completed his Adult Psychiatry residency through Yale University School of Medicine at Connecticut Valley Hospital and his Fellowship in Child and Adolescent Psychiatry at the University of Massachusetts Medical Center.  Dr. Derek Carlson has a special interest in treating Autism Spectrum Disorders and ADHD.


  • Bonnie Peterson, MSW, LICSW, is a founding partner and Executive Vice President of The Stadter Center. Peterson earned her MSW from the University of North Dakota in Grand Forks. She has over fourteen years experience in the mental health field. She coordinates the development, implementation and supervision of clinical programming.

  • Tammy Christenson, BA, is the Chief Operating Officer of The Stadter Center.  She is the co-founder of the Grand Forks-Eastern North Dakota affiliate of the National Alliance on Mental Illness and concentrates her volunteer work in Family Education and Advocacy services. Her education and fifteen years of experience in administration within federal and city agencies has led to her current position at The Stadter Center. Tammy is a graduate of the University of North Dakota with a Bachelor of Arts degree in Psychology.







1451 44th Avenue South Grand Forks, ND 58201 (Located at Washington Street and 44th Avenue) 701.772.2500 • 1.866.772.2500