Licensed Psychologists
Ronald J. Berk, M.Eq., LP
Ron Berk, M.Eq., LP, completed his masters degree in guidance and counseling at Marquette University. He earned a Specialist Certificate at the University of Minnesota in Child Development and Special Education. He was a recipient of two National Science Foundation fellowships at the University of Minnesota and National Science Foundation funding to study non Euclidean geometry. He was a Ph.D. candidate at the University of Minnesota and a University of Minnesota faculty member and program director for ten years. Since then he has specialized in evaluating and treating over 3,000 chronic pain patients. He maintains certification in biofeedback and neurofeedback. He was a coauthor and researcher on the original documentation of the flexion relaxation response in the cervical spine published in Clinical Neurophysiology. His professional interests are the MMPI-2, minor traumatic brain injury, disability and biofeedback. He also enjoys downhill skiing, swimming, classical music and his extended family.
Stacie Bigelow, MA, LMFT, BCIA, CBIS
Stacie Bigelow earned her Bachelor of Arts degree in Psychology from the University of Minnesota. She went on to earn her Masters degree in clinical psychology and is currently a PhD candidate in clinical psychology from Fielding Graduate University. Her advanced studies are concentrated in health psychology and neuropsychology. Ms. Bigelow has been an Associate Faculty member of Adler Graduate School since 1998. She is also a Sports Psychology and Neuropsychology consultant to the University of Minnesota men’s Rugby team. Outside her work at MAPS, Ms. Bigelow has authored a book on Fibromyalgia titled: “Simple Relief Through Movement." Stacie currently sees patients at our Maple Grove and Edina clinic locations.
Deborah Fisher, Psy.D., LP
Dr. Fisher earned her doctorate in psychology in 1991 from the University of Northern Colorado. She completed her internship at Human Services of Washington County, Minnesota. Dr. Fisher earned her undergraduate degrees in nursing and sociology and masters’ degree in sociology with an emphasis on gerontology. Dr. Fisher has practiced in health and rehabilitation psychology, general adult, adolescent and child psychology as well as being a clinical administrator for Allina and Blue Cross behavioral health clinics. She enjoys teaching and has been on the administrative faculty at Argosy University and is currently on the faculty for Capella University. Earlier in her career, Dr. Fisher taught sociology and practiced as a RN in several areas of nursing such as intensive care, emergency department, surgery and mental health. She has now worked at MAPS Medical Pain Clinics since 2002 and has a special interest in pelvic pain. Dr. Fisher enjoys time with her husband, children and grand children, doing tae kwon do, yoga, gardening and participating in Toastmasters International.
Paul Heideman, Ph.D., LP
Dr. Heideman completed his graduate training in clinical psychology at the University of Wisconsin-Milwaukee. He began specializing in health psychology during his internship at the Medical University of South Carolina. A native Minnesotan, he and his family moved back to the Twin Cities where he completed residency training at the Minneapolis VA Medical Center before joining
Ben Lexau, Psy.D., LP
Dr. Lexau completed his masters degree in Cognitive and Biological psychology at the University of Minnesota and his doctoral degree in clinical psychology at the Minnesota School of Professional Psychology. He completed an internship in clinical psychology and health psychology at the VA Medical Center in Minneapolis, Minnesota. Dr. Lexau went on to complete a postdoctoral fellowship at the VA Medical Center with focused training on health psychology. Dr. Lexau has worked at the Allina medical clinic in Hastings, Minnesota and has worked at MAPS Medical Pain Clinics since 2002. Dr. Lexau treats individuals who cope with persistent pain and problems that can frequently occur with pain: depression, anxiety, relationship issues, and harmful health behaviors such as smoking or lack of exercise. In his free time, Dr. Lexau enjoys spending time with his wife and three active children. He enjoys playing guitar, running, reading mysteries and slowly restoring his old house.
Mary Mattison, Psy.D., LP
Dr. Mattison completed her doctoral degree in clinical psychology, with a minor in health psychology, at the Minnesota School of Professional Psychology in 2000. She completed an internship in clinical psychology and health psychology at the VA Medical Center in Sioux Falls, South Dakota. Dr. Mattison has worked in private practice, corporate and hospital settings. She enjoys working with adults, adolescents and children. Outside her work at MAPS, Dr. Mattison enjoys spending time with her family traveling, running, riding her horse and participating in outdoor sports.
Davis M. Shryer, LADC
Davis received his Master’s Degree in Counseling from the Hazelden Graduate School of Addiction Studies and is a Board Certified Counselor and a Licensed Drug & Alcohol Counselor. Davis has worked in various aspects of the chemical dependency field, including counseling at Hazelden, public speaking on chemical dependency issues relating to brain function, as a recovery coach and as an interventionist. In his spare time, Davis enjoys participating in amateur theater and training his golden retriever – Rufus.
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