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Behavioral Healthcare Faculty

Gregory A. Crosby, MA, LPC, CGP, is a clinical group coordinator for Kaiser Permanente's northwest region. He has a national consulting and training practice in group therapy. Mr. Crosby is on the National Board of Certified Group Psychotherapists and is an adjunct faculty member at Lewis & Clark College graduate school in counseling psychology, Portland State University in continuing professional education, and Marylhurst University in humanities.

Ron Unger, LCSW, is a therapist specializing in cognitive therapy for psychosis, who works with both individuals and groups. After studying a variety of psychological approaches to psychosis over several decades, he decided on cognitive therapy due to its revolutionary yet down-to-earth and well-researched approach. Mr. Unger has been a pioneer in bringing cognitive therapy for psychosis into Oregon and has given numerous presentations and workshops about this type of therapy. He has also presented on other psychosocial approaches to psychosis and on the psychological impact of trauma, including the frequent relationship between trauma and psychosis. Mr. Unger’s presentations emphasize simple, practical, and humanistic ways of understanding and relating to human difficulties that can too easily be perceived as being "beyond understanding."

Jerome Yoman, PhD, is a licensed board-certified clinical psychologist and former licensed social worker. Thirty years of experience with diverse diagnoses span public and private hospital, community mental health, and private practice settings. Specializing in serious mental health disorders, Dr. Yoman has been a program creator and director, supervisor, consultant, trainer, author, and therapist. Ten years as an adjunct professor include a recent course on mental health diagnosis in PSU's MSW program.