Behavioral Health Team

Our Behavioral Health Team

Thomas Foley, MD

Dr. Thomas Foley joined CHI St. Joseph Children’s Health in August 2017 as the Psychiatrist for our new Behavioral Health Program. He obtained his Bachelor’s degree at the University of Colorado. From there he went on to attend medical school at St. George’s University. He completed his adult psychiatry residency at Temple University Hospital and fellowship in child and adolescent psychiatry at the Children’s Hospital of Philadelphia. He is board certified in both General Psychiatry and Child/Adolescent Psychiatry.

Dr. Foley has been providing psychiatric care for families in Central Pennsylvania for the past 7 years. He currently lives in the Lancaster area with his wife and 3 young children. During his free time he enjoys spending time with family, hiking, running, reading, and swimming.

Mary Jo Hanley, CRNP
Psychiatric Certified Registered Nurse Practitioner

Mary Jo joined CHI St. Joseph Children’s Health in August 2017 as our Certified Registered Nurse Practitioner for our new Behavioral Health program. Mary Jo graduated from the University of Pennsylvania in 2011 with her MSN. She obtained her BSN from Minnesota State University-Moorehead and her RN Diploma from St. Vincent’s Hospital School of Nursing. Mary Jo is Board Certified as a Family Psychiatric Mental Health CRNP. She has experience in treating children and adolescents, alongside their families, in an outpatient setting. She has experience in day hospital settings and school-based psychiatric services. When she has time to spare, she enjoys boating and reading.

Lindsey Baker, MA, LPC

Lindsey Baker, MA, LPC has been working in the mental health field for the past 5 years. She holds a Master of Arts in Applied Clinical Psychology from Penn State University and has completed a Certificate of Advanced Graduate Studies in Counseling from Messiah College. Lindsey became a Licensed Professional Counselor in 2018. Prior experience includes individual outpatient therapy with children, adolescents, and adults, including family and play therapy. Additionally, Lindsey has spent the last 2 years providing psychological assessments in order for children and adolescents to receive more intensive mental health treatment through Behavioral Health Rehabilitation Services (BHRS). Professional interests include trauma across the lifespan, Cognitive Behavioral Therapy, mindfulness techniques, and working with children and families.

Lindsey was born in Lancaster, Pennsylvania but spent 12 years between New Orleans and Baton Rouge, Louisiana. She enjoys the outdoors, spending time with friends and family, reading, painting, and watching sports.

Shannon Diller, MA, LPC

Shannon joined the behavioral health team as a therapist in July of 2019. Shannon achieved a Bachelors of Science in Psychology from Columbia International University in 2005. Shannon worked as a therapeutic support staff and activities counselor in an after school program until Shannon achieved a Masters of Arts in Marriage and Family Therapy in 2015 from Liberty University. Shannon has worked as a Behavioral Specialist, Mobile Therapist, Family Based Therapist, and most recently a therapist in an intensive day treatment facility. In May of 2019 Shannon Earned a Licence in Professional Counseling. Shannon has a passion for helping children and families connect on a relational level to cultivate growth and health in family systems.

Shannon has been married to his wonderful wife since 2002. Shannon and his wife have three sons who are very active. A lesser known fact about Shannon is that he has an Associates Degree in Culinary Arts. Shannon and his family enjoy cooking together, going to concerts, and spending time in the summer at HersheyPark.

Jami Dumler, LCSW

Jami joined the behavioral health team as a therapist in May 2020. She holds a Master of Social Work from University of South Carolina and became a Licensed Clinical Social Worker in 2019, after holding an LSW since 2017. She has experience and expertise in treating children, adolescents, and adults with Post-Traumatic Stress Disorder and other trauma related conditions. In this work, she also holds a national certification to provide Trauma-Focused Cognitive Behavioral Therapy (TF-CBT) as well as TF-CBT focused on Childhood Traumatic Grief.

Before coming to CHI St. Joseph Children’s Health, Jami worked with children, adults, couples and families with depression, anxiety, and serious mental illness providing outpatient therapy for three years. She also spent two years providing support through the forensic interviewing process, advocacy, and trauma informed care at a Children’s Advocacy Center in Lexington, South Carolina. Professional interests include pediatric and adolescent trauma, transgenerational trauma, childhood grief and loss, Cognitive Behavioral Therapy, mindfulness, and working with family systems.

Jami was born in York, Pennsylvania where she spent most her life until her educational pursuits. She spent two and a half years living in South Carolina but returned to Lancaster, Pennsylvania to be closer to family. She enjoys health and fitness, hiking, beach trips and spending time with family and friends.

Alison Ferrara,  LCSW

Alison holds a Master of Social Work from Millersville University and has completed post-graduate education in Applied Behavior Analysis and Nonprofit Management.   Alison became a Licensed Clinical Social Worker in 2017, after holding an LSW since 2014. She has experience treating children, adolescents, and families.  Before coming to CHI ST. Joseph’s Children Health, Alison worked with children on the Autism Spectrum and their families, proving behavior consultation and outpatient therapy, while also managing a summer program designed to teach social skills and coping skills. Professional interests include trauma informed treatment, Applied Behavior Analysis, Cognitive Behavioral Therapy, family systems theories, developmental disabilities, and working with children and families.

Alison grew up in Susquehanna County, Pennsylvania and moved to the Lancaster area after high school to pursue her college degree. She enjoys spending time with friends and family, reading, crafting, teaching social work courses, and engaging in volunteer work with the pregnancy and infant loss community.

Nathan Morrissey, LPC

Nathan Morrissey, LPC joined CHI St. Joseph Children’s Health Behavioral Health Team in January 2021. Nate received his Bachelor’s Degree in Psychology from Temple University and later achieved his Master’s in Counseling from Arcadia University. Before joining the team, Nate worked in community mental health as a family-based therapist. Through this work, Nate has seen the success that can be achieved when a child or adolescent is seen as an individual, but also as a unit of a bigger system and how they impact one another.

Nate is originally from the Allentown, PA area but after going to school in Philadelphia, he and his wife fell in love with the city. Nate currently lives in Philadelphia with his wife and two cats. They enjoy exploring the city, hiking the Wissahickon and cheering on all Philly sports teams (Go Birds!).

Ruth O’Gara, LCSW

Ruth joined CHI St. Joseph Children’s Health in March 2020. She spent the first eight years of her career working in education, both as a classroom teacher and manager of an afterschool program. She then obtained her Masters in Social Work from the University of Denver in Colorado, and a post-graduate certificate in Marriage and Family Therapy at the Denver Family Institute. She has been working in the mental health field for five years, and especially enjoys working with children, adolescents, and their families. Ruth takes a systems approach in her therapy and believes in helping all members of the family reach their mental health goals. She has particular experience working with adolescents involved in the juvenile justice system and working with families impacted by trauma.

Ruth moved to Lancaster in 2017. In her free time she loves spending quality time with her husband and two young children, reading, and discovering delicious places to eat in Lancaster City.