Sarah Leitz, LMFT is the Clinical Manager and Therapist at CAST Treatment Centers. She earned her Bachelor’s degree in Psychology and Family Studies at the University of Arizona, and received her Master’s in Marital and Family Therapy from Alliant International University. Sarah has worked in the mental health field since 2016, providing comprehensive therapeutic services to individuals and families. Sarah has a strengths based approach focused on concrete solutions, personal growth and resiliency.

Jackie O’Brien, AMFT, CADC-III is a clinical therapist, certified drug and alcohol counselor, and Alumni Coordinator at CAST Treatment Centers. She received her drug and alcohol counseling certification from Loyola Marymount University, Los Angeles and her Master’s degree in Clinical Psychology from Antioch University, Los Angeles. Jackie is a trained and experienced coach and case manager who specializes in supporting her clients achieve goals and strategies toward wellness. As CAST Treatment Centers’ Alumni Coordinator, Jackie is responsible for developing and implementing programs and events for the Alumni and family community. Jackie takes pride in assisting clients in developing their road map into recovery and success.

Hilary Koo, LCSW is the Clinical Manager and Therapist at CAST Treatment Centers. She received her Bachelor’s degree in Health Sciences from Rice University and earned her Master’s degree in Clinical Social Work from The University of Texas at Austin. Hilary has worked in the mental health field since 2014 with an emphasis on mood disorders, anxiety, and trauma. Her therapeutic approach is individually tailored and collaborative.

Patrick O’Neil, CADC-I, CAST’s Manager of Next Step Program and Group Facilitator. He has worked in the recovery field in various capacities since 2003. He is a published author of two memoirs and a co-contributor for instructional manuals on creative writing. Through embracing his own creative process he has recognized that nurturing and cultivating one’s passion is an integral and essential part of recovery.

Dr. William D. Stanley received his Doctorate of Medicine degree from UMDNJ – Robert Wood Johnson Medical School in Piscataway, NJ. He did his residency training at Albert Einstein Medical Center in Philadelphia, PA. He received his Bachelor of Science degree from Morgan State University in Baltimore, Md. He did 1 year of a Master’s program in Anatomy at the University of Maryland Baltimore City campus prior to matriculating to medical school that next year.

He has worked in Internal Medicine for the majority of his professional life both inpatient and outpatient. He started Parkside Medical Assoc, PA in Trenton, NJ, employing 4 physicians. He noticed he had an interest in substance abuse and started involvement with ASAM (American Society of Addiction Medicine) in 1998. He completed his Boards in ASAM in 2000 and, later, by ABAM (American Board of Addiction Medicine) in 2010. Since 2013 he has concentrated his time exclusively to the treatment of Substance Abuse Disorders. Prior to his joining Dr. Benya and her team in California, he was Medical Director of both an inpatient detox unit and 2 outpatient treatment programs, all located in New Jersey. He has an active license to practice medicine in both New Jersey and California.

Dr. Craig V. Smith, M.D. is a former organ transplant surgeon, who now dedicates his practice to addiction medicine. He received his M.D. degree from the UCLA School of Medicine. Dr. Smith then completed his general surgical residency at Harbor-UCLA medical center and his multi-organ transplant surgical fellowship at the University of Pittsburgh medical center. He returned to UCLA medical center to start his career in academic transplant surgery, performing transplants, teaching students and residents while also conducting research on transplantation for the treatment of diabetes. During his academic career as an associate professor of surgery, Dr. Smith performed more than 500 organ transplants at UCLA, UC Irvine and the City of Hope National Medical Center. Since alcohol and drug use are leading causes of organ damage leading to the need for a transplant, Dr. Smith learned about addiction by listening to his patients. More importantly, since a requirement to receive an organ transplant is abstinence from using alcohol and drugs, Dr. Smith learned about recovery from listening to his patients. After listening over the years, pursuing self-study and continuing medical education in the field of addiction, in 2009 Dr. Smith decided to dedicate his career to addiction medicine. Dr. Smith is board certified in Addiction Medicine by both the American Board of Preventive Medicine and the American Board of Addiction Medicine.

Jeffrey is driven by a deep sense of compassion, and is dedicated to increase access to care and empower individuals on their journey to recovery. With over 35 years of engagement with the recovery community, he is committed to raising awareness about mental health and addiction issues and connecting those struggling with the resources they require. Jeffrey strives to make a meaningful difference in the lives of those affected by mental health and addiction challenges in the community.

Kate Weaver, LMFT, is a Therapist at CAST Treatment Centers. She earned her Bachelor’s degree in Psychology and her Master’s degree in Clinical Psychology from Vanguard University of Southern California. Kate has worked in the mental health field in a variety of capacities, including community mental health, mental health/dual-diagnosis treatment programs, school-based therapy, and private practice settings. Kate uses an integrative clinical approach, drawing from relational, somatic, and strength-based psychotherapy. She is also a certified Brainspotting Practitioner.