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Faculty Profiles

Alvaro Barriga, Ph.D

Dr. Barriga received his Ph.D. in developmental psychology from The Ohio State University in 1996, completing his pre-doctoral internship at Richland Hospital (in Mansfield, OH) and post-doctoral fellowship at Auberle (in McKeesport, PA). Dr. Barriga has been a licensed psychologist since 1999 and has conducted individual, couples, family, and multi-family therapies with children, adolescents, adults, and older people across a variety of outpatient, inpatient, residential, and medical settings. He currently provides assessment and treatment services within the Center for Traumatic Stress in Children and Adolescents, holding a certification in Trauma Focused Cognitive Behavioral Therapy. During his 15 years on faculty at Seton Hill University, he taught undergraduate and graduate courses in human development, psychopathology, assessment, research methods, and social psychology. Dr. Barriga has published in the fields of moral development, empathy, cognitive distortions, attention deficits, delinquency interventions, assessment, and grade inflation. He has provided consultation services to mental health, drug and alcohol, educational, and legal organizations. Dr. Barriga currently holds the position of Clinical Associate Professor through Temple University School of Medicine and provides seminars and clinical supervision to psychology interns and psychiatry residents at AGH. His approach to supervision strives to be individualized, collaborative, developmental, and culturally sensitive.

Chi Chan, PsyD 

Dr. Chi Chan is a clinical neuropsychologist who provides services involving outpatient and inpatient neuropsychological evaluations, and outpatient individual psychotherapies. He conducts outpatient neuropsychological evaluations and diagnostic assessments, primarily ranging from young adults to older adults. His clinical interests include dementias, movement disorders, seizure disorders, strokes, head injuries, and complex medical and psychiatric diagnoses. He has a clinical psychotherapy background in substance use disorder counseling and group therapy. Dr. Chan earned his doctorate degree in Counseling Psychology at Carlow University, and completed a doctoral internship and post-doctoral fellowship at the Allegheny Health Network – Psychiatry and Behavioral Health Institute. Dr. Chan is a member of the National Academy of Neuropsychology and the International Neuropsychology Society.

Ashley Dandridge, PsyD

Dr. Dandridge received her doctorate in Counseling Psychology from Chatham University.  Completed her doctoral internship at the Cleveland State University Counseling Center and post-doctoral fellowship within AGH’s Department of Psychiatry.  Dr. Dandridge specializes in providing trauma-informed care to children, adolescents, and adults.  She is trained in Trauma-Focused Cognitive Behavioral Therapy (TF-CBT) and Cognitive Processing Therapy (CPT).   Dr. Dandridge utilizes an integrative approach to treatment incorporating aspects of Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT) and Person-Centered Therapy.  Her clinical interests include intersectionality, multicultural counseling, community outreach, and providing therapeutic support to African American women and girls.  Dr. Dandridge’s approach to supervision is culturally-informed, strength-based, and is centered on the unique developmental needs of the trainee. 

Hollie Dean-Hill, Psy.D.

Dr. Dean-Hill is the Associate Director of Training for the AGH Doctoral Psychology Internship. She is a licensed psychologist and clinical lifespan neuropsychologist. She works with children, adolescents and adults, providing outpatient psychological and neuropsychological evaluations. She also provides inpatient neuropsychological evaluations for the AGH consultation and liaison service. Her interests include ADHD, traumatic brain injury, neurological conditions (e.g., multiple sclerosis and stroke), pre-surgical evaluation, gender identity development and gender-affirming intervention evaluation, and the neuropsychological impact of various medical conditions. She is a member of the institute’s Diversity and Inclusion Committee as well as AHN Center for Inclusion Health’s Transgender Health Interdisciplinary Treatment Team. Dr. Dean-Hill assisted in developing the training structure for the Academy of the American Board of Professional Neuropsychology-recognized postdoctoral neuropsychology training programs. Dr. Dean-Hill became faculty at AGH in 2017, and was appointed Associate Director of Training in 2020. Dr. Dean-Hill is a National Register Health Service Psychologist and is a member of the Pennsylvania Psychological Association, the American Psychological Association, and the National Academy of Neuropsychology. Dr. Dean-Hill's approach to supervision is developmental and tailored to the intern.

Leah Russell Flaherty, PsyD

Dr. Flaherty is a licensed psychologist located at the West Penn Institute for Pain Medicine in the enhanced pain program as a pain psychologist. She conducts pre-surgical psychological evaluations for spinal cord stimulation implantation. Her interests include the relationship between emotional and physical pain, suicidal thoughts and behaviors, Veterans issues, and control beliefs. Dr. Flaherty was trained in the Veterans Health Administration and has significant experience working with the impact of trauma on the body and mind. She is a member of the National Register of Health Service Psychologists, the Pennsylvania Psychological Association, and the APA’s Society for Health Psychologists. She is a certified instructor of Empowered Relief, a skills-based class that teaches patients how to train the brain away from pain using techniques of Cognitive Behavioral Therapy.

Michael Franzen, Ph.D.

Dr. Franzen is a clinical neuropsychologist who is a Fellow of Division 40 of the APA, a Fellow of the National Academy of Neuropsychology, and a Fellow of the Pennsylvania Psychological Association.  After nearly 40 years of professional activity, Dr. Franzen is limiting his time at AGH to two days a week. He provides inpatient neuropsychological assessment services primarily to the trauma surgery, neurosurgery, and the general medicine services at AGH. He also provides outpatient neuropsychological services to children and adults. His approach to assessment involves the use of standardized test instruments with procedures to test the limits and obtain information related to subjective aspects of performance. Interpretation follows a procedure of examining standardized scores, observing qualitative aspects of performance, searching for patterns of performance, profile analysis, and comparison to the theoretical and empirical literature. Individual training goals for the interns are agreed upon early in supervision sessions and revised as time progresses. The intern is encouraged to move toward professional independence. As with all training in the internship program, a developmental approach is taken in which each intern starts at a different level of activity based on their prior experience and engages in learning activities sequentially moving toward their training goals. 

Matthew Iwaniec, PsyD

A licensed clinical psychologist who works with adults in inpatient and outpatient health care settings. He completed his doctorate degree at Indiana University of Pennsylvania, his internship in Clinical Health Psychology at The Ohio State University Wexner Medical Center, and his Postdoctoral Fellowship in Clinical Health Psychology at Cleveland Clinic Akron General. As a health psychologist, he provides consultation and liaison services to medical inpatients, conducts brief cognitive assessments, performs pre-surgical psychological evaluations, and delivers diagnostic assessment and psychotherapy to patients referred from specialty medical clinics. He also consults with integrated treatment teams and provides education to multidisciplinary trainees. Dr. Iwaniec primarily follows a cognitive-behavioral treatment approach integrated with third-wave intervention techniques and motivational interviewing. His professional interests include psychological adjustment to acute and chronic illness, anxiety disorders, mindfulness, executive function, adherence to medical treatment, wellness promotion, and integrated behavioral health. Supervision is one of his favorite elements of clinical practice. He takes a culturally informed approach to supervision that is collaborative and individually tailored to the student’s developmental level and current needs.

Nancy A. Kennedy, Psy.D.

The Director of Training for the AGH Doctoral Psychology Internship. Dr. Kennedy is a graduate of the Indiana University of Pennsylvania Clinical Psychology Doctoral Program and Allegheny General Hospital Internship Program. She is a licensed psychologist and a member of the National Register. Dr. Kennedy was the Associate Director of Training for the doctoral internship training program at Allegheny General Hospital prior to being named the Director of Training in 2016. Dr. Kennedy has served on the executive committee of the Department of Psychiatry for the past 20 years. She has extensive experience in inpatient, outpatient, partial hospital and IOP settings with adults. Her areas of interest include psychotherapy with groups and personality disorders.

Morgan Krumeich, Psy.D.

A licensed psychologist who provides evidence-based individual therapy for children, adolescents, and adults, presenting with a variety of psychological conditions.  Dr. Krumeich graduated from The George Washington University in 2014 with her Doctorate in Clinical Psychology. Prior to obtaining her doctoral degree, Dr. Krumeich obtained a Masters in Clinical Psychology from The George Washington University, as well as a Masters in Education (specializing in Applied Child Studies) from Vanderbilt University. In 2014, she spent five years working for the Sheppard Pratt Health System as the Clinical Coordinator of The Center for Eating Disorders Intensive Outpatient Program.  During this time, she also provided individual and group therapy to outpatients at The Center for Eating Disorders before moving to Pittsburgh and joining Psychiatry and Behavioral Health at AHN.

Anthony Mannarino, Ph.D.

The Director of the Center for Traumatic Stress in Children and Adolescents and Vice Chair, Department of Psychiatry, Allegheny General Hospital, Pittsburgh, PA. He is also Professor of Psychiatry at the Drexel University College of Medicine. Dr. Mannarino has been a leader in the field of child traumatic stress for the past 25 years. He has been awarded numerous federal grants from the National Center on Child Abuse and Neglect and the National Institute of Mental Health to investigate the clinical course of traumatic stress symptoms in children and to develop effective treatment approaches for traumatized children and their families. Dr. Mannarino has received many honors for his work, including the Betty Elmer Outstanding Professional Award, the Most Outstanding Article Award for papers published in the journal Child Maltreatment given by the American Professional Society on the Abuse of Children (APSAC), the Model Program Award from the Substance Abuse and Mental Health Services Administration for “Cognitive Behavioral Therapy for Child Traumatic Stress”, and the Legacy Award from the Greater Pittsburgh Psychological Association. Dr. Mannarino has completed two-year terms as the President of APSAC and the President of the Section on Child Maltreatment, Division of Child and Family Policy and Practice, American Psychological Association. He is one of the co-developers of Trauma-Focused Cognitive-Behavioral Therapy (TF-CBT).

Kathryn McCarthy, Ph.D.

Kathryn McCarthy, Ph.D. is a licensed psychologist specializing in obesity, weight management and health behavior change.  Dr. McCarthy provides brief evidence-based interventions for food- and eating-related behaviors as well as general stress management and psychological adjustment.  She conducts pre-surgical psychological evaluations to determine readiness for bariatric surgery, and provides follow-up care to patients struggling with weight regain or difficulties adjusting after surgery.  

Dr. McCarthy received her doctoral degree in Clinical Psychology with a specialization in Behavioral Health from Alliant International University in San Diego, CA.  She completed a pre-doctoral and post-doctoral fellowship at Allegheny General Hospital specializing in Behavioral Medicine and Integrated Care.  

Dr. McCarthy is a member of the American Society for Metabolic and Bariatric Surgery, the American Psychological Association, the Society of Health Psychology, and the National Register of Health Service Psychologists.

Matthew Page, Ph.D., ABN

Dr. Page is a clinical lifespan neuropsychologist who primarily provides outpatient neuropsychological and psychodiagnostic evaluations for children, adolescents, and adults. Dr. Page completed his doctorate in Child and Family Clinical Psychology at the University of Miami. He completed his doctoral internship at Allegheny General Hospital with an emphasis on neuropsychology. He also completed his post-doctoral fellowship in lifespan clinical neuropsychology at Allegheny General Hospital. He became board-certified with the American Board of Professional Neuropsychology in 2019, and he maintains membership with the National Academy of Neuropsychology and the American Psychological Association. Dr. Page sees a wide range of clinical presentations across the lifespan, but his clinical interests include ADHD, learning disorders, and neurological conditions in young and middle adulthood (such as multiple sclerosis, Parkinson’s disease, and epilepsy). He provides presurgical neuropsychological evaluations. He also has a clinical and research background in working with LGBTQ+ youth and navigating the coming out process within the family system. He continues to provide diagnostic and some therapy services for LGBTQ+ individuals and people living with HIV. He also maintains some activity in contributing to the scientific literature through publication and presentations. Dr. Page takes a developmental approach to supervision, tailoring the neuropsychology rotation experience to the intern’s individual needs, experience, and areas of interest.

Marisa L. Panucci, PsyD

Dr. Panucci is a licensed clinical psychologist who provides individual outpatient psychotherapy employing cognitive-behavioral therapy (CBT) and supportive psychotherapy for adults ages 18 years and older.  Dr. Panucci prefers to work with individuals who present with major mood disorders.  She is primarily located at the Blazier Drive Clinic in Wexford, PA, where she is the Adult Team Lead Psychologist for the CBT Intensive Outpatient Program.  Additionally, she has experience working in partial hospitalization programming, where she provided open-ended process group therapy for individuals with acute mental health concerns and personality disorders.  She received her doctorate degree in Counseling Psychology from Carlow University and completed both her doctoral internship and postdoctoral training in clinical psychology at Allegheny General Hospital and West Penn Hospital.  Dr. Panucci is a member of the Pennsylvania Psychological Association and the National Register of Health Service Psychologists. 

Sarah Paul, Psy.D.

As a licensed psychologist, Dr. Paul works with adults presenting with anxiety, depressive, substance use, and trauma disorders in individual psychotherapy. She most commonly integrates humanistic, mindfulness, CBT, and DBT interventions when working with patients. Additionally, Dr. Paul has experience conducting psychological assessment for patients participating in AGH’s Partial Hospitalization/Intensive Outpatient Program as well as for patients seeking various medical procedures such as spinal cord stimulator or bariatric procedures. She completed her doctorate in Counseling Psychology at Carlow University and her postdoctoral fellowship at Allegheny General Hospital. Aside from outpatient care at PBHI, she has experience in college counseling and substance use rehabilitation services. Dr. Paul is a member of the National Register Health Service Psychology, Pennsylvania Psychological Association, and American Psychological Association. Dr. Paul enjoys helping trainees navigate and reach their educational goals from a developmental lens, along with using supervision to explore the trainee's strengths and challenges when working with therapy clients.

Kimberly Fleming Pedersen, Ph.D.

Dr. Flemming received her doctorate in Clinical Psychology from the University of Missouri in 2016 with a graduate minor in Psychological Statistics and Methodology. She completed her doctoral internship at the University of Kansas Medical Center in Kansas City, KS with an emphasis in Underserved Populations followed by a post-doctoral fellowship in Advanced Clinical and Health Psychology at the University of Kansas Medical Center. Dr. Pedersen has been a licensed psychologist since 2017 and has conducted individual therapy with medical populations of adolescents, adults, and older adults in inpatient, outpatient, and integrated care settings. She currently practices as a clinical health psychologist within Allegheny Health Network, conducting pre-surgical psychological evaluations for stem-cell transplant and heart transplant candidates, consultation and liaison services on medical-surgical units at West Penn Hospital, and individual therapy and brief consultation as part of integrated care teams in Hematology and Cellular Therapy, Internal Medicine, and the Esophageal and Lung Institute at West Penn Hospital. Dr. Pedersen has published in the field of addiction, executive functioning, personality, and health disparities. She has taught courses to medical students, residents, and behavioral health professionals on topics such as integrated behavioral health, Motivational Interviewing, Dialectical Behavioral Therapy, Cultural Humility, and LGBTQ patient care. Dr. Pedersen currently holds the position of Assistant Professor through Drexel University College of Medicine and serves as the Program Lead for Clinical Health Psychology at AHN. She serves as the Institute Officer for the Enterprise Equitable Health Institute, leads the Diversity and Inclusion Committee at PBHI, and co-teaches an annual seminar in Individual and Cultural Diversity for psychology and psychiatry trainees. She provides clinical supervision to psychology practicum students, interns, and postdoctoral fellows at West Penn Hospital. Her approach to supervision strives to be inclusive, developmental, and culturally informed.

Bruce Rohrs, Ph.D.

Earned his doctorate from Ohio University He has over 25 years of experience in supervising trainees at all levels of preparation for professional practice. His focus is on integrating aspects of professional development for a long term, sustainable, and enjoyable career. His professional experience has been predominantly in outpatient community mental health, working with the spectrum of adult disorders and problems. In particular, he enjoys working with clients with Axis II issues. He has recently developed an interest in working with trauma-based pathology utilizing EMDR.

Elizabeth (Betsy) Samson, PhD

Dr. Samson is a licensed clinical psychologist working in the Women’s Behavioral Health program, where she also completed her post-doctoral fellowship. She adopts an integrative approach to clinical work, incorporating psychodynamic, person-centered, cognitive-behavioral, and trauma-focused interventions into her work. She sees primarily women with mood and anxiety disorders and who are pregnant or postpartum, as well as with those experiencing fertility concerns, pregnancy loss, or other reproductive health issues. Trauma in these contexts is a particular area of clinical interest. Supervision operates from a developmental framework, with an emphasis on self-reflection and individualized support.

Lorelei Simpson Rowe. PhD

Dr. Rowe received her PhD in clinical psychology from the University of California, Los Angeles in 2005 and completed her internship and post-doctoral fellowship at the University of California, San Diego/San Diego VA Healthcare System. She is the Director of the Center for Evidence-Based Psychotherapy and Professor of Psychiatry at the Drexel University College of Medicine. Prior to joining the Allegheny Health Network in 2018, she was Associate Professor of Psychology and Director of Clinical Training for the clinical psychology PhD program at Southern Methodist University in Dallas, TX. Dr. Rowe’s research focuses on intimate partner violence, couple relationship functioning, therapy outcomes, and assertive resistance to sexual violence victimization. She is a member of the editorial boards of the Journal of Family Psychology and Psychology of Violence. Dr. Rowe specializes in cognitive-behavioral therapies for adults coping with mood and anxiety disorders, PTSD, and relationship distress. She provides training and supervision in individual, couple, and group therapy.

Hilary Rushton, Psy.D.

Dr. Rushton is a licensed psychologist who specializes in providing trauma therapy to children, adolescents, and adults. Dr. Rushton uses an integrative approach rooted in a Person-Centered, Multicultural framework, incorporating evidence-based interventions and therapeutic art interventions. She is trained in Trauma Focused-CBT, Cognitive Processing Therapy, and EMDR and values adapting evidence-based treatments in light of the unique identities, needs, interests, and strengths of her patients.  Dr. Rushton’s clinical interests include complex trauma, resilience, intersectionality, expressive therapies, as well as addressing health disparities affecting historically marginalized communities. She is experienced in providing LGBTQ+ affirming and sex-positive therapy. Dr. Rushton also has training and experience in providing psychodiagnostic assessments across the lifespan. Dr. Rushton received her doctorate from Loyola University Maryland.  She completed her doctoral internship at AGH’s Department of Psychiatry and her postdoctoral fellowship at AGH’s Department of Psychiatry and with Central Outreach Wellness Center, a local LGBTQ+ health clinic. Within the department, Dr. Rushton is a member of the Diversity and Inclusion Committee. As a supervisor, Dr. Rushton encourages flexibility, creativity, and self-reflection in approaching clinical work and takes a strengths-based approach.

Victoria-Maria Sekunda, Psy.D, ABN

Dr. Sekunda is a board-certified clinical neuropsychologist, providing both C&L evaluations at AGH and outpatient neuropsychological evaluations. She primarily conducts outpatient neuropsychological evaluations and diagnostic assessments with older adults. Her clinical interests include memory disorders, complex medical and psychiatric diagnoses, movement disorders, strokes, and head injuries. She has a research background working with individuals with HIV Associated Neurocognitive Disorder. Dr. Sekunda earned her doctoral degree in Counseling Psychology at Carlow University after completing a doctoral internship at Tewksbury Hospital in Tewksbury, Massachusetts. She completed her postdoctoral fellowship in clinical neuropsychology at Allegheny General Hospital. Dr. Sekunda became board-certified with the American Board of Professional Neuropsychology in 2021 and she is a member of the National Academy of Neuropsychology and the International Neuropsychology Society. She enjoys developing collegial relationships with trainees, while simultaneously catering to developmentally appropriate training needs.

Lori Siegel, Ph.D.

Dr. Siegel is a licensed psychologist who works with older adolescents, adults, and couples who present with a variety of concerns including those related to mood disorders, anxiety disorders, substance use disorders, and interpersonal conflict. Dr. Siegel completed her doctorate in clinical psychology at Temple University and her doctoral internship at The Bellevue Hospital Center-NYU Medical Center. She subsequently trained as a postdoctoral fellow at St. Lukes-Roosevelt Medical Center in addiction psychology. While Dr. Siegel conceptualizes personality and psychopathology from a psychodynamic perspective, she also has extensive experience in applying cognitive, behavioral, and motivational techniques. Her approach to supervision is collaborative in terms of setting personal goals but always aims to increase the supervisee’s confidence and trust in his/her therapeutic insights and skills. Other areas of focus in supervision include the therapist-patient relationship, case conceptualization, and analysis of countertransference. In addition to supervision, Dr. Siegel also teaches several seminars on issues related to individual substance use treatment as well family support of people who use substances.

Alyssa Stiver, Psy.D.

Alyssa Stiver, PsyD, is a licensed clinical psychologist who primarily works with children, adolescents, and emerging adults to provide outpatient therapy and psychological assessment. Specifically, Dr. Stiver specializes in treatment of anxiety, depression, disruptive behaviors, conduct-related problems, attention-deficit/hyperactivity disorder, adjustment issues, and Autism Spectrum Disorder. Dr. Stiver provides psychological evaluations to clarify diagnostic presentation for a variety of neurodevelopmental, behavioral, and mood-related concerns. She has specialized training in administering the Autism Diagnostic Observation Schedule, 2nd Edition. Dr. Stiver previously worked at Children’s Hospital of Pittsburgh in the Child Development Unit where she specialized in the diagnosis and treatment of children with Autism Spectrum Disorder and related concerns. She joined the faculty at AHN in April 2020. Dr. Stiver completed her doctoral training at Indiana University of Pennsylvania and APA accredited internship and postdoctoral fellowship at Mount Washington Pediatric Hospital in Baltimore, MD. She is a member of the American Psychological Association. Dr. Stiver takes as cognitive behavioral approach to supervision while also assuming a developmental style of training

Rebecca Weinberg, Psy.D.

Dr. Rebecca Weinberg, PsyD, is the Director of Clinical Operations for the Perinatal Depression Program at Women’s Behavioral Health at West Penn Hospital.  She specializes in treating women across the reproductive lifespan, including those struggling with perinatal mood and anxiety disorders, distress related to infertility and perinatal loss, and parenting. She conceptualizes cases through an interpersonal lens and utilizes an integrative approach to psychotherapy, incorporating interpersonal psychotherapy, cognitive behavioral therapy, behavioral activation, EMDR, and dialectical behavior therapy into her work. She oversees the clinical operations of the Mother-Baby Intensive Outpatient Program and provides supervision to masters’ level therapists who provide outpatient individual and group therapy and facilitate the intensive outpatient group. She runs a Circle of Security Group, which is an attachment-based parent reflection program that teaches parents to understand and meet their children’s attachment needs. She earned her undergraduate and graduate degrees in psychology at Yeshiva University, in New York. She completed her doctoral clinical psychology internship at Allegheny General Hospital and her post-doctoral clinical training at the University of Pittsburgh Medical Center, Western Psychiatric Institute and Clinic. During her pre and postdoctoral training, she also participated in the development of Family-Based Interpersonal Psychotherapy (FB-IPT) for Depressed Preadolescents, assisted in writing the treatment manual and provided this psychotherapy to preadolescents and their families. She is an author of Family-Based Interpersonal Psychotherapy for Depressed Preadolescents, a clinician guide published by Oxford University Press. She uses a developmental approach to supervision, meeting trainees where they are, and working collaboratively to meet training goals. 

Richard Withers, Ph.D.

An experienced clinical psychologist and teacher specializing in psychotherapy with children, adolescents and parents. He integrates cognitive behavioral and psychodynamic theory and practice in training interns and in treating diverse problems among children and adolescents and their families. Dr. Withers has particular interests in the use of play, art and story-telling in therapy with children. He is trained in Parent Child Interaction Therapy and clinical hypnosis with adults and children. Other areas of training and interest include mental health assessment for bariatric surgery and the treatment of eating disorders. Dr. Withers is an Assistant Clinical Professor of Psychiatry of Temple University School of Medicine and Drexel University. He has taught both graduate and undergraduates at the University of Pittsburgh, Seton Hill University and Waynesburg University.

Rebecca Zill, PsyD

Dr. Zill received her Psy.D. in School Psychology from Duquesne University in 2019, completing her doctoral internship at The Rochester Institute of Technology and post-doctoral clinical neuropsychology fellowship at Allegheny General Hospital. Dr. Zill is a licensed psychologist and clinical neuropsychologist. She oversees the integration of behavioral healthcare services at AHN’s Pediatric Orthopaedic Institute (POI), where she primarily works with children and adolescents providing outpatient individual and group evidence-based practices, as well as psychological and neuropsychological evaluation. She also has multidisciplinary clinical training and experience in working with children, adolescents, and adults who have experienced traumatic brain injury or various neuromusculoskeletal conditions. Her approach to supervision is individualized, collaborative, developmental, and culturally sensitive.