Center for Behavioral Health

Meet Our Team

Jeffrey L. Alvaro, M.D. Psychiatry / Psychology

Dr. Alvaro specializes in pediatric psychiatry in the Institute for Brain Protection Sciences at Johns Hopkins All Children’s Hospital. He treats all psychiatric conditions in children and adolescents with a particular interest in ADHD, anxiety disorders and mood disorders. He joined the hospital staff in 1999. Dr. Alvaro also is an affiliate professor in the department of Psychiatry and Behavioral Neurosciences at the University of South Florida. He earned his medical degree from the University of South Florida, where he also completed a residency in general adult psychiatry followed by a fellowship in child and adolescent psychiatry.  He served as chief resident during the final year of his fellowship.
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Sakina Butt, Psy.D. Psychiatry / Psychology

Dr. Butt is a neuropsychologist at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 2019. Some of Dr. Butt’s areas of clinical expertise include neuropsychological evaluations and consultations for children in the neonatal intensive care unit and pediatric intensive care unit.
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Mark Cavitt, M.D. Psychiatry / Psychology

Dr. Cavitt is the Medical Director of Pediatric Psychiatry Services and serves as Chair of the Division of Neurology, Psychiatry, Psychology & Developmental Pediatrics. He is board certified in child and adolescent psychiatry as well as general psychiatry. He is an Assistant Clinical Professor for the University of South Florida, College of Medicine and an Associate Professor of Psychiatry at Lake Erie College of Medicine, Bradenton and Instructor in Pediatrics at Johns Hopkins Medicine.  Dr. Cavitt graduated from the Quillen College of Medicine at East Tennessee University. His recent awards include Best Doctors of Tampa Bay (2007-2018); Educator of the Year (2015) at the University of South Florida.
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Lacy Chavis, Psy.D Psychiatry / Psychology

Dr. Chavis specializes in pediatric psychology and is clinical director of psychosocial services in Johns Hopkins All Children's Maternal, Fetal & Neonatal Institute. Previously, Dr. Chavis was a private practitioner and consultant evaluator for the Early Steps program of Florida. Dr. Chavis earned her doctoral degree in clinical psychology from Illinois School of Professional Psychology-Argosy University. She completed a pediatric internship in clinical psychology at New York Center for Child Development with emphasis on early childhood development and trauma. Dr. Chavis continued to specialize with fellowship at Andrus Children’s Center focusing on trauma, parent-child interactions and maternal mental health.
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Melissa Faith, Ph.D. Psychiatry / Psychology

Dr. Faith is a clinical pediatric psychologist specializing in hematology/oncology at Johns Hopkins All Children’s Hospital. She received her master’s and doctorate degrees in clinical psychology from the University of Arkansas, completed a predoctoral internship in clinical child psychology at the University of Mississippi Medical Center and completed a postdoctoral fellowship in clinical psychology with an emphasis in pediatric hematology and oncology at the University of Oklahoma Health Sciences Center. Dr. Faith’s research interests include disseminating evidence-based interventions in large medical and community centers (e.g., motivational interviewing) as well as emotion socialization, social adjustment, and sibling adjustment during and following childhood chronic illness. 
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Marissa Feldman, Ph.D. Psychiatry / Psychology

Dr. Feldman is a pediatric psychologist in the Johns Hopkins All Children’s Institute for Brain Protection Sciences. She specializes in the evaluation and treatment of children and adolescents with acute and/or chronic medical conditions to promote psychological health and well-being, and provides consultation services on the inpatient units regarding adaptation and coping with illness, treatment adherence, and emotional and behavioral functioning. She joined the hospital staff in 2017. Dr. Feldman received her Doctoral degree in clinical psychology from the University of South Florida, and completed her internship and fellowship at the Ann & Robert H. Lurie Children’s Hospital of Chicago (formerly Children’s Memorial Hospital). Dr. Feldman’s research interests include treatment adherence and quality of life in patients with chronic illness, outcomes of group intervention, psychosocial factors contributing to positive youth development and negative peer relations. 
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Alyssa Fritz, Ph.D. Psychiatry / Psychology

Dr. Fritz is a pediatric psychologist in the Johns Hopkins All Children’s Institute for Brain Protection Sciences. She joined the hospital staff in 2018. Dr. Fritz provides evidence-based interventions for pre-school and early childhood disruptive behavior disorders.
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William Frye, Ph.D. Psychiatry / Psychology

Dr. Frye is a pediatric psychologist in the Chronic Pain Clinic at Johns Hopkins All Children’s Hospital. He specializes in non-pharmacological treatment for patients with acute and chronic pain conditions and provides skill-based interventions for simultaneous psychosocial concerns. He joined the hospital staff in 2018. Dr. Frye earned his doctoral degree in clinical psychology from Auburn University. He completed a pre-doctoral internship in pediatric psychology at Children’s Mercy Hospitals and Clinics and a postdoctoral fellowship in chronic pain at Nationwide Children’s Hospital. Dr. Frye’s research interests include pain coping and catastrophizing and parental impact on youth outcomes.
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Lauren Gardner, Ph.D. Psychiatry / Psychology

Dr. Gardner is the psychology internship director and administrative director of the Autism Program at Johns Hopkins All Children’s Hospital. She has provided services for children and families with a wide range of concerns, including noncompliance, autism spectrum disorder, developmental disabilities, depression, anxiety and social skills deficits. Dr. Gardner’s clinical interests include neurodevelopmental disabilities. She earned her doctorate degree from Indiana University Bloomington and completed an internship in psychology at the University of Tennessee Health Science Center and a fellowship in developmental/behavioral pediatrics at the Boling Center for Developmental Disabilities.
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Jason Hangauer, Ph.D. Psychiatry / Psychology

Dr. Hangauer is a pediatric outpatient psychologist at Johns Hopkins All Children’s Hospital. He specializes in the evaluation and treatment of autism spectrum disorder (ASD) and developmental disabilities. He joined hospital staff in 2018. Dr. Hangauer's research interests include evidence-based interventions for ASD, behavioral parent training, and assisting allied providers serving children with ASD and other disorders in the use of current research supported best practices.
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Kristin Hoffman, Ph.D. Psychiatry / Psychology

Dr. Hoffman is the director of the Trauma Psychology Program at Johns Hopkins All Children’s Hospital, where she provides evidence-based interventions for trauma, in addition to training and consultation regarding trauma-informed services and systems. She joined the hospital staff in 2018. Dr. Hoffman earned her doctorate in Child Clinical Psychology from Southern Illinois University at Carbondale. She completed a pediatric psychology internship at Children’s Hospital Los Angeles and a postdoctoral fellowship in trauma-informed care and developmental disabilities at the University of Tennessee Health Sciences Center in Memphis, Tennessee. Dr. Hoffman’s research interests include evaluating factors impacting the implementation and effectiveness of trauma-informed programs, interventions and service delivery systems.
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Jennifer Katzenstein, Ph.D. Psychiatry / Psychology

Dr. Katzenstein is the director of psychology and neuropsychology at Johns Hopkins All Children’s Hospital. Previously, Dr. Katzenstein was a private practitioner and Assistant Professor of Neurology at Indiana University School of Medicine/Riley Hospital for Children in Indianapolis where she provided neuropsychological evaluations, consultations and academic coaching for children and adolescents. After graduating from Indiana University Purdue University Indianapolis, she completed a pediatric internship and fellowship at Texas Children's Hospital/Baylor College of Medicine. Dr. Katzenstein is board certified in pediatric neuropsychology and clinical neuropsychology.
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Aja Meyer, Ph.D. Psychiatry / Psychology

Dr. Meyer earned her doctorate degree from the University of South Florida, and completed an internship at the Children's Hospital of Michigan and a post-doctoral fellowship at Akron Children's Hospital. Dr. Meyer has provided psychological services to children and adolescents with a broad range of medical conditions, such as diabetes, kidney disease, sickle cell anemia, cancer, and various neurological conditions (e.g., AVM, cerebral palsy, chronic pain, epilepsy, spinal cord injury, stroke, and traumatic brain injury). She provides consultation services on the inpatient units at Johns Hopkins All Children's Hospital and sees outpatients as part of the All Children's Pediatric Psychiatry program.
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Danielle Ransom, Psy.D. Psychiatry / Psychology

Dr. Ransom specializes in neuropsychology at Johns Hopkins All Children’s Hospital. She joined the medical staff in 2019. Before joining Johns Hopkins All Children’s, Dr. Ransom was an assistant professor at the University of Miami Miller School of Medicine where she co-directed the Pediatric Concussion Clinic and developed the neuropsychology arm of the Sports Concussion Clinic.
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Reena Thomas, M.D. Psychiatry / Psychology

Dr. Thomas is a child and adolescent psychiatrist for the Johns Hopkins All Children’s Institute for Brain Protection Sciences. She joined hospital staff in 2018. Dr. Thomas earned her medical degree from American University of Integrative Sciences. She trained in psychiatry at Virginia Tech Carilion School of Medicine in Roanoke, Virginia. Dr. Thomas then completed a child and adolescent psychiatry fellowship at Children’s Hospital of Philadelphia in Pennsylvania.
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