Kathleen M. Rupertus, PsyD

Clinical Director

Dr. Kathy Rupertus is a Licensed Clinical Psychologist and founder of The Anxiety and OCD Treatment Center, LLC, a private practice established in 2005. Dr. Rupertus received her doctorate in clinical psychology from the Philadelphia College of Osteopathic Medicine, a program recognized for its training in cognitive-behavioral therapy (CBT). She has specialized in cognitive and behavioral treatments of anxiety disorders, body dysmorphic disorder, excoriation disorder, and trichotillomania in children, adolescents, and adults since 1994. Dr. Rupertus is a professional member of the International Obsessive-Compulsive Disorder Foundation (IOCDF), The Anxiety and Depression Association of America (ADAA), The Trichotillomania Learning Center (TLC), and The Delaware Psychological Association (DPA). She is co-author of the book Loving Someone with OCD (New Harbinger, 2005), which was recently named as one of the 10 Best OCD Books For 2021 ( by Choosing Therapy, an online mental health start-up.

Dr. Rupertus is dedicated to helping individuals who are living with an anxiety disorder, not only through the provision of therapy, but also through community education and service. She presents regularly to professionals at several national scientific conferences. Within the community, she delivers educational presentations to area physicians and pediatricians' offices, and public and private school settings. Dr. Rupertus has also appeared on several television and radio programs discussing topics related to anxiety and its treatment.

In the following video, Medical Anchor Kearni Warren talks to Kathleen M. Rupertus, Psy.D. of The Anxiety and OCD Treatment Center, LLC. Dr. Rupertus explains the symptoms and treatment of OCD.

Brian Ashenfelter, PsyD

Director- Adult Treatment Services

Dr. Brian Ashenfelter is a clinical psychologist, and is licensed to practice in Delaware and Pennsylvania. He received both his masters and doctorate from the Philadelphia College of Osteopathic Medicine. He has extensive experience in treating anxiety and depressive disorders with evidence-based treatments, including cognitive behavioral therapy (CBT), exposure and response prevention (ERP), prolonged exposure, and motivational interviewing.

Dr. Ashenfelter is a genuinely compassionate psychologist, who is committed to assisting individuals with maximizing personal growth through a strength-based treatment approach. Treatment plans are collaboratively developed and tailored to meet with the unique needs of each individual.

Dr. Ashenfelter is an enthusiast of all Philadelphia professional sports teams. Outside of work, he enjoys spending time with his wife and children. He is most passionate about cooking, gardening, and listening to music.

Amelia D. Serine, PsyD

Director- Child & Adolescent Services

Dr. Amelia Serine is a Licensed Clinical Psychologist who specializes in the evidence-based treatment of children, adolescents, and adults affected by anxiety disorde​rs, obsessive-compulsive disorder, ADHD, body-focused repetitive behaviors, and related conditions. She is trained in cognitive-behavioral approaches, including exposure with response prevention (ERP), habit reversal training (HRT) with stimulus control, mindfulness-based interventions, and acceptance and commitment therapy (ACT). Dr. Serine received specialty training through the Penn Anxiety Program at the University of Pennsylvania in family-focused therapy for anxiety disorders, as well as adjunctive couples and family intervention for individuals with anxiety.

Dr. Serine received her doctorate in clinical psychology from the Philadelphia College of Osteopathic Medicine (PCOM). She is a professional member of the Anxiety and Depression Association of America (ADAA) and the Philadelphia Behavior Therapy Association (PBTA).

Dr. Serine is passionate about helping individuals with anxiety confront and overcome their biggest challenges to live life on their terms.

Kendrick Peer Mugnier, PsyD, LPC

Dr. Kendrick Peer Mugnier, better known as “Dr. Peer,” completed his Doctorate in Clinical Psychology from the APA accredited Philadelphia College of Osteopathic Medicine (PCOM). He is a licensed psychologist in Pennsylvania and in Delaware and he is also a Licensed Professional Counselor (LPC) in PA. He completed his post-doctoral fellowship at Belmont Behavioral Health Hospital in Philadelphia, PA. He has more than ten years of experience working with clients who have a wide range of mental health and substance use disorders and he has held leadership positions at multiple organizations. Dr. Peer uses evidence-based practices including Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and Acceptance and Commitment Therapy (ACT) to address the needs of clients. He adheres to Exposure and Response Prevention (ERP) principles for treating Obsessive Compulsive Disorder (OCD.) Dr. Peer has advanced training in family therapy and believes that that family inclusion is essential to growth for most of his clients. His therapeutic style is direct, collaborative, and grounded in mindfulness and mutual respect. On a personal note, Dr. Peer was once a competitive student athlete and now enjoys spending free time mountain biking, camping, working on home renovation projects, and spending time with family and pets. 

Maureen Gordon, PsyD

Dr. Maureen Gordon is a Licensed Clinical Psychologist and 2005 graduate of Widener University. Her approach to therapy is collaborative in nature, promoting an atmosphere for clients that is warm and welcoming. Dr. Gordon specializes in individualized treatment for depression and anxiety disorders, as well as distress related to trauma experiences. She focuses on strengths of the client to promote wellness and healing.

Chris J.K. Leins, MA, LPCMH, NCC 

Chris Leins has been working exclusively with individuals with OCD and other anxiety disorders since 2015. He has co-authored peer-reviewed articles on the diagnosis and treatment of racial trauma within the DSM-5 framework, and has published on the utilization of sacred texts in the effective treatment of religious scrupulosity (a subtype of OCD).

Chris believes that the evidence-based psychotherapy is not merely about treating symptoms. Competent therapeutic work is about equipping clients with techniques- and confidence in them through real-time experience-so they can make real progress through the evidence-based processes and also learn to maintain that progress over time. In other words, effective psychotherapy centers on teaching clients to be their own behavior therapists.

Chris is passionate about helping people take their lives back from clinically significant anxiety-symptoms.