Meet Our Staff

General Staff

Dr. David Pellack, PhD, LPC, CSAT, EMDR trained – Clinical Director since 2021
Dr. Pellack earned his doctorate from Indiana University, Bloomington. David’s dissertation focused on characteristics that predict patient program compliance for chronically homeless mentally ill individuals, many of whom had issues with drug and or alcohol abuse. Read More
Dillon Reeves, BSW, MSW, LSW – Primary Therapist
Dillon is a licensed social worker with a Master’s Degree in social work from the University of Pennsylvania and member of the Systems-Centered Training and Research Institute. Read More
Dr. Sherry Nykiel, MD – Psychiatrist
Dr. Sherry Nykiel is a graduate of the Harvard University MGH-McLean Adult Psychiatry Residency Program and Partners Healthcare Addiction Psychiatry Fellowship. Her clinical and administrative experiences span a wide range of settings and patient populations. Read More
Brittany Prophet, B.S.
Brittany earned her Bachelor of Science degree in Organizational Behavior & Applied Psychology from Albright College. She has worked in the drug and alcohol field for 7 years. Prior to joining KeyStone ECU, Brittany was a case manager, conducted intakes. Read More

Trauma-informed Art Therapist

Judith Curcio
Judith has worked as an Art Therapist for over 25 years, both with children and adults in a variety of different settings, including inpatient, partial hospitalization programs and addiction treatment centers. She has been employed at the KeyStone Extended Care Unit since 2011 where she provides art therapy and facilitates the Grief and Loss groups. Read More

Family Therapists

Karen Martin, MA, LMFT, CSAT, EMDR trained
Karen, an MA in counseling from the University of Connecticut, has been working with the KeyStone Center ECU for over 9 years. As the KeyStone’s Family Therapist, she works with adults, adolescents, dual diagnosis population and their family’s on a daily basis. Read More


Nancy Roberts Willis, M.S.W., LSW, CP
Nancy is a licensed social worker in Pennsylvania and a certified practitioner in psychodrama by the American Board of Examiners in Psychodrama, Sociometry and Group Psychotherapy. Read More

Recovery Counselors

Paul Greway
Paul has worked in the Addiction field for the past thirteen years and has been employed at ECU for the past eleven years. During his tenure here, Paul has acquired a great deal of knowledge and understanding which serve him well in introducing the program to potential referral sources and in supporting potential clients. Read More

Other Clinical Staff

Robert Ryan, MSS, LCSW, MBA
Robert is a licensed clinical social worker who graduated from the Bryn Mawr Graduate School of Social Work and Social Research. He also has a certificate in Cognitive Behavioral Therapy. Bob’s passion and expertise is in the connection between childhood trauma, the brain, and addiction, a topic he presents monthly to clients. Read More

Get Help Now

Call 800-733-6840 or contact us to connect with the KeyStone Center Extended Care Unit.