OUR CLINICIANS

 Brigette A. Erwin, PhD

Founder and Director

Dr. Erwin is a licensed clinical psychologist, speaker, and author, recognized nationally for her contribution to evidence-based treatment of anxiety and related disorders. Dr. Erwin founded the Anxiety and OCD Center to deliver effective treatment to children, adolescents, adults, couples, and families affected by anxiety and related disorders. Through Dr. Erwin Consulting, she provides training to corporations and individual corporate clients. Dr. Erwin also trains other mental health professionals in evidence-based treatment.

Dr. Erwin is Public Relations Chair of the Philadelphia Behavior Therapy Association, on the conference review committee of the Anxiety and Depression Association of America, and on the Saint Charles Borromeo Seminary Archdiocese of Philadelphia Admissions Board.

Dr. Erwin received her Ph.D. from Temple University and completed a National Institute of Mental Health postdoctoral fellowship at the University of Pennsylvania School of Medicine, Department of Psychiatry. Dr. Erwin has since served as Director of the OCD Program at the Anxiety and Agoraphobia Treatment Center, and Associate Director of the Adult Anxiety Clinic of Temple University. The quality of Dr. Erwin’s work and her dedication to the study and treatment of the anxiety disorders has been recognized with awards from the Anxiety Disorders Association of America, the National Institute of Mental Health, the Medical University of South Carolina, Temple University, and Boston College.

She is honored as a 2017 Woman of Influence (Main Line Today).

Ryan Staudle, PsyD

Psychologist

Dr. Ryan Staudle is a licensed clinical psychologist with experience in evidence-based treatment of adults, adolescents, children, and families suffering from anxiety, depression and related disorders. He has training in cognitive-behavioral therapy (CBT), exposure and response prevention (ERP), CBT-focused anger management, motivational interviewing, and insight-oriented treatments. Dr. Staudle also has experience in providing comprehensive psychological assessments.

Dr. Staudle received his Psy.D. in Clinical Psychology from Immaculata University and completed an American Psychological Association accredited pre-doctoral internship at Upper Bay Counseling and Support Services, with a focus on community-based treatment of trauma, substance abuse, and anger management. Dr. Staudle also provided comprehensive psychological assessments, employment screenings, and pre-surgical evaluations. Dr. Staudle earned his Master’s degree in clinical psychology from Immaculata University. He previously participated in training at the Anxiety & OCD Center as a pre-doctoral practicum student. Dr. Staudle also completed his post-doctoral training at the Anxiety & OCD Center in July 2021.

 Matthew Siegel, PsyD

Psychologist

Dr. Matthew Siegel is a licensed clinical psychologist with experience using evidence-based treatments with children, adolescents, and adults. As a Pennsylvania certified school psychologist, Dr. Siegel has particular experience working with children who have been diagnosed with ADHD, learning disorders, and Autism Spectrum Disorder. Additionally, he is trained in providing comprehensive psychological and psycho-educational evaluations. Dr. Siegel has a strong interest in working with a variety of populations using cognitive-behavioral therapy (CBT) and exposure and response prevention (ERP) therapy to help patients manage their anxiety and OCD-related symptoms.

Dr. Siegel received both his Master’s Degree and his Psy.D. in Clinical Psychology from the Institute of Graduate Clinical Psychology at Widener University. He completed his American Psychological Association accredited pre-doctoral internships at KeyStone Center and Haverford College Counseling and Psychological Services. At KeyStone Center, Dr. Siegel provided both individual treatment and group treatment to patients with substance use disorders as well as anxiety, depression, Bipolar Disorder, and PTSD. At Haverford CAPS, Dr. Siegel worked with young adults who experienced anxiety, depression, OCD, and identity issues. Dr. Siegel completed his post-doctoral residency at the Anxiety & OCD Center in July 2022.

Brittany Keim, MS

Counseling Resident

Brittany Keim, MS is a counseling resident at the Anxiety and OCD Center with experience working with children, adolescents, couples, and families in outpatient, school, and in-home settings. Brittany has experience providing evidence-based treatment to individuals affected by
disorders such as, Generalized Anxiety Disorder, Social Anxiety Disorder, Obsessive-Compulsive Disorder, Attention-Deficit/Hyperactivity Disorder, Major Depressive Disorder, and Borderline Personality Disorder. Brittany is trained in cognitive behavioral therapy (CBT), exposure and response prevention (ERP), dialectical behavior therapy (DBT), and motivational interviewing (MI). Brittany is skilled at utilizing evidence-based interventions to ensure the efficacy of treatment and attainment of treatment goals. Brittany takes a comprehensive approach to
treatment and collaborates with schools and physicians in order to maximize treatment outcomes.

Brittany completed her practicum and internship at the Anxiety & OCD Center and is supervised by Dr. Brigette Erwin. Brittany graduated from the Philadelphia College of Osteopathic Medicine in July 2021 with her Master’s in Mental Health Counseling. Brittany received a Bachelor’s of Science degree in Psychology with a clinical concentration from Saint Joseph’s University in 2019. Brittany is currently working toward becoming a Licensed Professional Counselor (LPC).

Jennifer Taylor, MA

Doctoral Intern

Jennifer Taylor, M.A. is a doctoral intern at the Anxiety and OCD Center with experience providing evidence-based treatments to children, adolescents, adults, and families. Jennifer has acquired both work and practicum training in inpatient, residential, school, and outpatient
treatment settings, providing individual and group therapy, as well as conducting comprehensive psycho-educational evaluations with a wide range of individuals and families. Prior to graduate school, Jennifer worked as a mental health counselor for adolescents and adults struggling with eating disorders. As a doctoral practicum student, she has provided therapeutic and assessment services to adults with serious and persistent mental illnesses such as schizophrenia, as well as children and adolescents with anxiety and related disorders, depressive disorders, ADHD, and learning disorders. Jennifer has received training in cognitive-behavioral therapy (CBT), exposure with response prevention (ERP), dialectical behavior therapy (DBT), acceptance and commitment therapy (ACT) and family systems interventions. She is also skilled at collaborating with schools, physicians, and other treatment providers in order to maximize treatment gains across settings.

Jennifer is a doctoral candidate at Widener University’s Institute of Graduate Clinical Psychology (IGCP). She obtained her Master’s degree in Clinical Psychology from ICGP in July, 2021 and will obtain her PsyD in Clinical Psychology in 2023. Jennifer has completed course work in evidence-based practices for children, adolescents, and families through ICGP’s child, adolescent, and family therapy concentration. She has also completed all necessary coursework and training to obtain her Pennsylvania school psychology certification. Jennifer is currently completing her American Psychological Association accredited pre-doctoral internship at the Anxiety and OCD Center under the supervision of Dr. Brigette Erwin.

 Isabel Hubbard, MA

Doctoral Intern

Isabel Hubbard, M.A. is a doctoral intern at the Anxiety and OCD Center. Isabel has experience providing evidence-based treatments to children, adolescents, families, and adults in outpatient, in-home, and school settings, as well as conducting comprehensive psycho-educational evaluations. Throughout her training, she has focused on working with children and families diagnosed with ADHD, Autism Spectrum Disorder, depression, and anxiety-related disorders. She received her certification in school psychology from the Pennsylvania Department of Education, which provides her with a strong understanding of school-based evaluations and learning disorders. She is trained in cognitive behavioral therapy (CBT), applied behavior analysis (ABA), exposure and response prevention (ERP), mindfulness based approaches, and acceptance and commitment therapy (ACT). Isabel understands that starting treatment can often feel daunting, and she strives to foster a warm and collaborative environment for clients to work towards their goals.

Isabel is a doctoral candidate at Widener University’s Institute of Graduate Clinical Psychology (IGCP). She obtained her Master’s degree in Clinical Psychology from IGCP in May, 2021 and will obtain her PsyD in Clinical Psychology in 2023. Within the program, Isabel has specialized in evidence-based practices for children, adolescents, and families, as well as school psychology. She completed the first rotation of her American Psychological Association accredited pre-doctoral internship with the Pediatric Psychology Center of Chester County, and is currently completing her second rotation with the Anxiety and OCD Center under the supervision of Dr. Brigette Erwin.

 Lynn Harmer, MEd

Counseling Resident

Lynn Harmer, MEd is a doctoral candidate in Marriage and Family Therapy with experience treating individuals affected by Generalized Anxiety Disorder, (GAD), Social Anxiety Disorder (SAD), Obsessive-Compulsive Disorder (OCD), Attention-Deficit/Hyperactivity Disorder (ADHD), and Major Depressive Disorders (MDD). Lynn is trained in cognitive behavioral therapy (CBT), exposure with response prevention (ERP), dialectical behavior therapy (DBT), motivational interviewing (MI) and Emotion Focused Therapy (EFT). She is skilled at utilizing evidence-based interventions to ensure the efficacy of treatment and attainment of treatment goals. Lynn takes a comprehensive approach to treatment and collaborates with schools and physicians to maximize treatment outcomes.

Lynn graduated from Eastern University with a Master of Education in Special Education. She is presently pursuing her Doctorate in Marriage and Family Therapy from Eastern University, graduating in 2023.

Kate Billings, MS

Counseling Resident

Kate Billings, MS is a psychology counseling resident at the Anxiety and OCD Center. Kate has experience working with children in an educational setting. She also has experience taking part in research at the Children’s Hospital of Philadelphia. Kate is trained in cognitive-behavioral therapy (CBT). Kate is skilled at meeting the individual treatment goals of clients through evidence-based practices coupled with a strong collaborative relationship.

Kate received a Bachelor’s of Science degree in Human Development and Family Studies from Penn State University and her Master’s in Mental Health Counseling degree from the Philadelphia College of Osteopathic Medicine.

Nick Everett, MS

Counseling Resident

Nick Everett, MS is a counseling resident at the Anxiety & OCD Center. Nick has experience working across the lifespan in an outpatient setting. Additionally, Nick has experience working with children in school settings and communicating with treatment teams outside of the center. Nick is trained in cognitive-behavioral therapy (CBT), applied behavioral analysis (ABA), dialectical behavior therapy (DBT), and exposure with response prevention (ERP). Nick is skilled at utilizing evidence-based practices to achieve treatment goals. He strives to establish a warm and inviting therapeutic environment in which he prioritizes clients’ concerns, goals, and values. Most importantly, Nick emphasizes reflection on clients’ progress and taking steps to continue down a path of growth.

Nick received a Bachelor of Arts in Psychology with a minor in Sociology from Bloomsburg University of Pennsylvania and a Master’s of Science in Mental Health Counseling degree from the Philadelphia College of Osteopathic Medicine. Currently, Nick is continuing his education in a PhD program in Counselor Education and Supervision at Duquesne University. Nick will obtain his PhD in 2025.

Rebecca Sherrier, MA

Counseling Resident

Rebecca Sherrier, M.A. is a counseling resident at the Anxiety and OCD Center with experience providing evidence-based treatment to children, adolescents, young adults, and families. Rebecca has acquired both work experience and practicum training in inpatient, partial hospitalization, intensive outpatient, and counseling center treatment settings providing individual and family therapy. Rebecca also has experience conducting intake evaluations. As a doctoral practicum student, Rebecca has provided intake assessment and therapeutic services to children and adolescents with depression, anxiety and related disorders, somatic disorders, and early psychosis, as well as individual counseling in a college counseling center. Rebecca has received training and experience in cognitive behavioral therapy (CBT), dialectical behavioral therapy (DBT), solution focused therapy (SFT) and family systems therapeutic interventions.

Rebecca is a doctoral candidate at Chatham University in Pittsburgh, PA. She obtained her Master’s degree in Counseling Psychology from Chatham University in August 2020, and will obtain her PsyD in Counseling Psychology in 2024. Rebecca has completed a practicum
placement at a partial hospitalization and intensive outpatient program working with children, adolescents, and their families. Rebecca is currently completing her practicum at the Anxiety and OCD Center under the supervision of Dr. Brigette Erwin.

 Anna Thompson, BSN

Counseling Intern

Anna Thompson, BSN, is a counseling intern at the Anxiety and OCD center. Anna has experience working with children and adults in inpatient, outpatient, and in-home settings. Anna has training in cognitive-behavioral therapy (CBT), prolonged exposure (PE), and exposure and response prevention (ERP). Anna began her career in the field of psychology working as a registered nurse, providing inpatient care. Anna strives to incorporate a holistic approach to patient care and to motivate clients to align treatment goals with their values.

Anna received her Bachelor of Science in Nursing from The Pennsylvania State University. Currently, Anna attends the Philadelphia College of Osteopathic Medicine and will obtain her Master’s in Mental Health Counseling degree in July 2023.

 Alison Capaldi, M.S.Ed.

Counseling Intern

Alison Capaldi, M.S.Ed. is a counseling intern at the Anxiety and OCD Center with experience working with adolescents, adults, and families in school and outpatient settings. Alison has experience using cognitive behavioral therapy (CBT) and acceptance and commitment therapy (ACT) to work with individuals presenting with anxiety and related disorders, depression, and trauma.

Alison earned her Bachelor’s of Arts in Psychology from Cornell University in 2021. She received her Master of Science in Education in Counseling and Mental Health Services from the University of Pennsylvania’s Graduate School of Education in June of 2022. She is currently pursuing her Master of Philosophy in Education in Professional Counseling from the University of Pennsylvania, graduating in 2023.

 Madelyn Biddle, BA

Counseling Intern

Madelyn Biddle, BA is a counseling intern at the Anxiety and OCD Center. Along with working with children in outpatient settings, she also has training in Applied Behavioral Analysis (ABA) and Cognitive Behavioral Therapy (CBT). Madelyn strives to provide evidence-based treatment to individuals experiencing anxiety-related and depressive disorders.

After obtaining her Bachelor of Arts in Psychology from Cabrini University in 2021, she enrolled in and is currently a student working towards her Master’s in Mental Health Counseling at Philadelphia College of Osteopathic Medicine (PCOM) with an anticipated graduation date in the summer of 2023.

 Molly Anderson, BS

Counseling Intern

Molly Anderson, BS is a counseling intern at the Anxiety and OCD Center. Molly has experience working in the integrative care setting as a Behavioral Health Consultant Intern in a Primary Care clinic. Molly has experience providing Brief Solution-Focused Therapy, Motivational Interviewing, Cognitive Behavioral Therapy (CBT), and Dialectical Behavioral Therapy (DBT) for a variety of conditions including Anxiety Disorders, ADHD, Depressive Disorders, Psychotic Disorders, and Autism Spectrum Disorder. Molly strives to ensure that evidence-based treatment and well-rounded team-based care is given to all individuals.

Molly obtained her Bachelor’s Degree in Healthcare Administration from Ohio University in 2020 and is currently completing her Master’s Degree in Mental Health Counseling at Philadelphia College of Osteopathic Medicine (PCOM) with an anticipated graduation date in the summer of 2023.

 Susan Hamilton

Business Manager

Susan Hamilton has worked in the health care industry for more than 10 years, assisting physicians and surgeons locally and nationally with medical documentation. Susan joined the Anxiety & OCD Center as business manager in 2015.

 Elizabeth Teta

Administrative Assistant

Liz Teta has worked in the service industry for more than 13 years and has a strong interest in service and advocacy in the behavioral healthcare industry. Liz joined the Anxiety & OCD Center as an administrative assistant in 2021.

 Emily D’Antonio

Administrative Assistant

Emily D’Antonio is currently a student at Catholic University pursuing a Bachelors of Arts in Psychology, where she also works as an undergraduate research assistant. Emily joined the Anxiety and OCD Center as an administrative assistant in 2019.