OUR MENTAL HEALTHCARE TEAM
DR. TATUM - CEO
Matthew Tatum, PsyD received his Doctorate in Clinical Psychology from Rosemead School of Psychology. Early in his career, he played a key role in helping develop two integrated behavioral health departments for Federally Qualified Health Centers in Fresno County. In 2015 he assumed the Executive Director role at First Steps Recovery. There he grew a single, six bed residential drug and alcohol treatment center into a six bed detoxification facility, 16 bed residential treatment center, partial hospitalization and intensive outpatient program, and 30 bed sober living program. Expanding services such as this is a passion and life’s work for Dr. Tatum. His goal for Sierra Meadows is to expand services to the entire Central Valley and be able to provide care for all those in need.
PSYCHIATRIC NURSE PRACTITIONER
Stephanie Patrick-Calvillo, MSN, PMHNP-BC is a Board Certified Psychiatric Mental Health Nurse Practitioner, with training and experience treating patients with psychiatric disorders across the lifespan and across practice environments; including inpatient and outpatient settings. Her education includes a Master of Science in Nursing degree with a focus on Executive Healthcare as well as a Psychiatric Mental Health Nurse Practitioner specialization from the University of St. Louis. Stephanie provides personalized, compassionate, and comprehensive care for patients. When not caring for patients Stephanie enjoys spending time with her family, traveling, and collecting plants.
KRISTINE WILLIAMS, COO
Kristine is an accomplished healthcare operations professional with over 17 years experience in healthcare. She is passionate about ensuring people receive the quality healthcare they deserve. She has represented long term care facilities to the California State Workforce Investment Board and chaired the workforce committee for California Association of Healthcare Facilities. She holds a bachelor's degree in human development from California State University Hayward. Originally from the Bay Area, Fresno has been her home for the past twenty years. She is a mother of two who loves hiking and traveling with her husband.
JASON CHRISTOPHERSON, PSYD, MSCP, ABPP
Jason Christopherson, PsyD, MSCP, ABPP earned his B.S. from the University of Utah and graduated with his Psy.D. from the California School of Professional Psychology at Alliant International University in 2013. He completed his internship and residency at the Sullivan Center for Children in Fresno, California. Dr. Christopherson is one of only two practicing American Board of Professional Psychology certified clinical child psychologists in the Central Valley.
Dr. Christopherson specializes in the assessment, diagnosis, and treatment of severe emotional and behavioral disorders from early childhood through young adulthood. He is an active member of the board of the San Joaquin Valley Psychological Association, and member of the California Psychological Association and National Register of Health Service Psychologists.
ALICIA ALVA, MS - ASCEND PROGRAM DIRECTOR
Alicia comes to Ascend Behavioral Health with more than 10 years of experience leading programs supporting individuals with intellectual disabilities and mental health diagnoses. After graduating with her BA in Social Work from CSU Fresno and launching her career with a national family home agency, Alicia pursued her MS in Marriage, Family and Child Therapy at University of Phoenix. Prior to joining Ascend, Alicia was the Executive Director of Operations at Central Valley Training Center, where she led behavior management and crisis response programs to success across the Central Valley. Throughout Alicia’s career, she has developed an unrelenting passion for supporting people who might otherwise go unsupported. In her free time, she enjoys spending time with her family and cheering on her two handsome young boys at their soccer games.