Stefanie Kool, Psy.D.


Dr. Kool a licensed Psychologist,  the clinical director and an owner of Desert Sage Health. She earned her doctorate degree in clinical psychology from the Arizona School of Professional Psychology at Argosy University. She has been practicing in the field of psychology since 2005 and specialized in the area of addictions from 2006 to 2016. She worked as a clinical director for a year-long substance abuse treatment center from 2006-2012 and was the Chief Program Officer at a substance abuse treatment center that offered residential, partial-hospitalization and intensive out-patient care from 2012 to 2016. Dr. Kool started her career working with children and families and received training in neuropsychological assessments. She has experience running educational and process groups and treats addiction, depression, anxiety, trauma, grief, family conflict and other presenting issues.  Her treatment approach is based on meeting the client where they are at and typically includes cognitive-behavioral therapy, dialectical behavioral therapy, and mindfulness based interventions to reduce a client’s current level of discomfort and increase positivity in his/her life.  She oversees the clinical team and provides clinical supervision to team members in the process of becoming independently licensed.   

Jennifer Aaron, LPC


Jennifer is a Licensed Professional Counselor. She earned her Community Counseling Degree from the University of Phoenix. She is also a certified  K - 12th Guidance Counselor and received her Certification from Ottawa University. She worked many years in elementary education. She is goal-oriented, uses Cognitive Behavioral Therapy and Family Systems based approaches. Her experience involves crisis intervention, ADHD, Trauma, Poor self image, Career Counseling, Family Conflict, Adjustment and Relationship Issues. 

Kelle English, Psy.D.


Dr. English earned her doctorate degree in clinical psychology from the Arizona School of Professional Psychology at Argosy University. She has been practicing in the field of psychology as a licensed independent substance abuse counselor since 2003. Dr. English has treated children, adults, and adolescents with a variety of presenting issues including substance abuse, co-occurring, trauma, domestic violence, anger management, and other legal involvement. She has worked in community mental health facilities, jails, and prisons. More recently, Dr. English has worked as a clinical director and is currently working under the supervision of Stefanie Kool, Psy.D., while pursuing licensure as a clinical psychologist. 

Shannon Hendrickson, Psy.D.


Dr. Hendrickson earned her doctorate degree from the Arizona School of Professional Psychology at Argosy University. Her clinical rotations included home-based bereavement work in hospice, residential group homes for adults, community mental health, and completing forensic evaluations within the Maricopa County court system. She worked as the Lead Psychologist for the Indiana Department of Correction and Arizona Department of Corrections from 2014-2017. She then served as the Clinical Director for the Arizona Department of Juvenile Corrections from 2017-2020. She has completed an EMDRIA-approved training in Eye Movement Desensitization and Reprocessing (EMDR), which allows clients to work through distress. Her primary focuses in treatment include depression, anxiety, trauma, grief, and difficult adjustment, as well as a variety of other presenting issues. In therapy, she utilizes a person-centered, trauma-informed approach to create safety, decrease distress, and facilitate healing.

Rosemarie Higgins, LCSW


Rosemarie received her Master's Degree in Social work from Arizona State University. She has a variety of experience, including assessing for crisis, providing brief interventions, and writing plans of care. She has worked with a variety of populations, including children, adolescents and adults, as well as, military families.  She has worked in a private practice setting and has provided treatment to a variety presenting issues, including adjustment disorders, mood disorders, anxiety disorders, attachment disorders, and has specialized in treating trauma. 

Jenny Holzapfel, Ph.D.


Dr. Holzapfel (Holts-app-fell) is a Postdoctoral Resident at Desert Sage Health. She earned both her Ph.D. in Counseling Psychology and Master of Counseling from Arizona State University, and has worked in a variety of clinical settings including university counseling centers, hospitals, private practice, and community mental health centers. She primarily works with concerns related to depression, anxiety, trauma, grief and loss, life transitions, identify exploration, and interpersonal conflict. Dr. Holzapfel is especially passionate about working with young adults and new parents. She has advanced training in perinatal mood and anxiety disorders, such as postpartum depression and anxiety. She is also trained in Eye Movement Desensitization and Reprocessing (EMDR). Dr. Holzapfel works from a collaborative and client-centered stance, and integrates approaches from Acceptance and Commitment Therapy (ACT), Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), Interpersonal Therapy (IPT), and Solution-Focused Brief Therapy (SFBT). Dr. Holzapfel works under the clinical supervision of Dr. Saini and Dr. Hendrickson. 

Denisha Liggett, Psy.D.

Denisha E. Liggett, Psy.D., also known as Dr. Dee is a Post- Doctoral Resident working under the Supervision of Stefanie Kool, Psy.D. and Raman Saini, Psy.D. (Licensed Clinical Psychologist). Dr. Dee received her Doctorate of Clinical Psychology degree from The Chicago School of Professional Psychology, Washington D.C. She has worked at various treatment levels, including Inpatient/Psychiatric Facilities, Intensive Outpatient and Outpatient care, Private Practice, Integrative Care facilities, and Non-Profit Organizations. Additionally, Dr. Dee has provided Individual, Group, Couples, Family, and Child/ Adolescent Therapy services at various capacities. She also has experience working with diverse and multicultural populations across the life span, who have experienced Severe Mental Illness, Chronic Pain, Anxiety, Depression, Substance Use, Trauma and Abuse, Grief and Loss, Sex Trafficking Survivors, Life Span Issues, and Adjustment Disorders. Dr. Dee works from a Multimodal theoretical orientation, which includes a collaborative approach to working with clients. She is a firm believer in incorporating the client(s) Voice and Choice in treatment, this allows the client to develop confidence in themselves as their own agent of change. Dr. Dee especially enjoys incorporating music, metaphors, and forms of "play" in her work with clients.

Rebecca Lutz, LPC

Rebecca is a Licensed Professional Counselor and earned her degree from Ottawa University. She has experience working  in community mental health, residential treatment and private practice.  She treats children and adults with a variety of presenting issues, including histories of co-occurring issues, trauma, abuse, and eating disorders.

Lindsey Mills, Ph.D.


Dr. Mills is one of our Postdoctoral Residents at Desert Sage Health. She earned her Ph.D. in Counseling Psychology from The University of Georgia after receiving her M.Ed. in Professional Counseling from The University of Georgia and her B.S. in Psychology from Presbyterian College. Dr. Mills has previous clinical experience working within the juvenile justice system, community mental health, and university counseling center settings. She is passionate about working with young adults and her clinical interests include multicultural counseling, self-compassion, relationship concerns, trauma, resiliency, and group therapy. Dr. Mills embodies a collaborative, client-centered, and relational approach to treatment and draws upon feminist and interpersonal theories in her work with clients. She may also incorporate Mindfulness, CBT, DBT, and Motivational Interviewing interventions based on the unique needs of her clients. Dr. Mills works under the clinical supervision of Dr. Saini and Dr. Hendrickson. 

Erasmo Rodriguez, LPC 


Erasmo is a Licensed Professional Counselor, and earned a Masters in Counseling Degree from Arizona State University.  He has experience working in Community Mental Health and private practice.  He has worked with a wide range of clinical diagnosis and enjoys working in the area of substance abuse.  He is also trained in using Eye Movement Desensitization and Reprocessing (EMDR) to treat trauma.  He utilizes an array of interventions to empower individuals, couples and families by tailoring treatment to meet the goals and needs of each client.  He is fluent in English & Spanish.

Nicole Rerucha, LPC

Nicole received her Master’s in Mental Health Counseling with a concentration in Forensics in 2014. She completed a yearlong internship with the Arizona Department of Juvenile Corrections (ADJC). After her internship was completed, she was then hired on as a full time Psychology Associate with ADJC in 2015. As a psychology associate, she gained certifications and experience in working with adolescents who had substance use issues, borderline personality traits, sexual deviant behaviors, trauma, suicidal ideation and self-harming behaviors, sex trafficking, conduct disorders, mood disorders, and seriously violent youth. In addition, She received training in de-escalation techniques for youth who are actively in crisis, suicide prevention, and group facilitation. She became proficient in facilitating groups such as life skills, sex trafficking and recovery (STAR), dialectical behavior therapy (DBT), 7 challenges, and aggression replacement training (ART). In 2018, she received a promotion to oversee the female crisis unit as a mental health team coordinator. She ensured the safety of youth who were in imminent danger to themselves or others before releasing them back to general population.

Sally Rye-Gomes, LPC


Sally is a Licensed Professional Counselor and earned her degree from Antioch University in Seattle, WA. Sally has experience with children, adolescents, adults, couples and families. She has worked at various level of care and has experience treating children who have experienced domestic violence and/ or sexual abuse, children and adults in crisis, as well as, a variety or presenting issues including anxiety, depression, mood dysregulation, family conflict, childhood trauma, and life transitions.  Sally is a Certified Ethnic Minority Mental Health Specialist and Certified Grief Recovery Specialist. 

Raman Saini, Psy.D.

 Dr. Saini is a licensed clinical psychologist and our intake psychologist at DSH. She earned her doctoral degree from Midwestern University in Downers Grove, IL. Her clinical focus includes working with children, adolescents, and families with complex trauma and/or in crisis. She is especially passionate about working with youth in DCS care and her experiences have included working in residential, school, hospital and outpatient settings. Her treatment approaches vary based on individual needs, and include psychodynamic psychotherapy, play therapy, crisis intervention, and cognitive and behavioral therapies.


Lori Shirk, Psy.D


Dr. Shirk  earned her doctorate degree in clinical psychology from the Arizona School of Professional Psychology at Argosy University. Dr. Shirk’s clinical rotations have included community behavioral health facilities in both urban and rural settings, behavioral schools, and a substance abuse treatment facility. Dr. Shirk began working in the field of developmental, social, emotional, and behavioral disabilities two decades ago. She works with children, adolescents, and adults and provides individual, couples, and family psychotherapy. She has experience facilitating psychoeducational and psychotherapy groups and treats anxiety disorders, mood disorders, adjustment disorders, trauma, grief, developmental disabilities, behavioral challenges, and executive function deficits. Her treatment approach is based on meeting the patient where they are at and incorporates behavioral therapy, cognitive-behavioral therapy, motivational interviewing, mindfulness, and play therapy to help the patient reach his/her fullest potential. She is also a certified Cogmed Coach. Dr. Shirk works under the supervision of  Dr. Kool.

Jim Stocks, LCSW


Jim has been a Clinician for over 20 years with extensive focus on mental health and substance use issues. He has provided individual, group and family therapy to children, adolescents and adults in hospital-based settings. For the last 15 years he has worked in an out-patient settings, which included 8 years of providing therapy to Active Duty service members and their families.  Jim works from a Client-Centered approach and incorporates Cognitive Behavioral Therapy and Prolonged Exposure Therapy.