Our Dedicated Staff

dr joyce mauk web.jpgJoyce Elizabeth Mauk, M.D.

CEO/Medical Director
Board Certified in Pediatrics and Neurodevelopmental Pediatrics
Sheila Morris Uhr Chair in Developmental Pediatrics
Distinguished Consultant Cook Children's Physician Network

Immediate Past President Texas Pediatric Society

Joyce Elizabeth Mauk, M.D. graduated from the University of Rochester School of Medicine in 1982. She served as faculty and attending physician at University of Pennsylvania School of Medicine and Children's Hospital of Philadelphia for twelve years. In addition, Dr. Mauk served as Director of the Behavioral Rehabilitation Service Line at Children's Seashore House, a hospital serving children with developmental disabilities and chronic illnesses in Philadelphia, Pennsylvania.

Dr. Mauk is Specialty Boarded in Pediatrics and Neurodevelopmental Pediatrics. In these capacities she gained experience not only as a physician executive with emphasis on administrative responsibilities, but also as a respected and published neurodevelopmental pediatrician. She has done extensive research on autism spectrum disorders, psychopharmacology and behavioral disorders.

Named President/CEO/Medical Director of the Child Study Center in July 1999, Dr. Mauk provides both clinical and administrative leadership to the Center, which offers diagnosis, treatment and understanding to those with complex developmental challenges. Her plans for the future are to focus on the scientifically validated care, complex developmental disabilities, and developing national prominence.

In 2006, Dr. Mauk was named as a Great Woman of Texas and in 2009 she was presented the Fort Worth Business Press Healthcare Hero award. In 2010, she was awarded the Texas Pediatric Society Individual Member Award AAP District VII, awarded by American Academy of Pediatrics. She serves as the President of the Texas Pediatric Society and is the past Co-chair of their Committee on Mental Health. She served on the Executive Board of the Rotary Club of Fort Worth. Dr. Mauk is a member and Distinguished Consultant of the Cook Children's Physician Network, the American Academy of Pediatrics, and other professional organizations. Dr. Mauk is a frequent Physician Consultant/Subject Matter Expert for Texas Health Steps Online Provider Training Modules and an invited lecturer and legislative advocate for mental health and developmental disabilities issues.


Robert W. Decker Developmental Pediatric Department

Teasha Frattarelli web.jpgTeasha-Lee Frattarelli, D.O.

Developmental-Behavioral Pediatrician
Board Certified in Pediatrics 

Teasha-Lee Frattarelli, D.O. was an Army Medical Service Corps officer until she started medical school at Kirksville College of Osteopathic Medicine, ATSU, in Kirksville, Missouri. After earning her D.O. degree in 2006, Dr. Frattarelli completed her pediatric residency program at Sparrow Hospital of Michigan State University in Lansing, Michigan in 2009. Dr. Frattarelli completed a fellowship in Developmental-Behavioral Pediatrics at Akron Children's Hospital in Akron, Ohio.

Dr. Frattarelli has received special training in behavioral management and is a certified Triple P (Positive Parenting Program) provider in Standard Triple P, Stepping Stones Triple P, Group and Individual Triple P. She is dedicated to a lifetime of continuing education and research, focusing her particular interests in early development.

Dr. Frattarelli is a member of Cook Children's Physician Network, American Osteopathic Association, American Academy of Pediatrics, and The Society for Developmental and Behavioral Pediatrics.

matthew-robinson-web.jpgMatt Robison, LMSW

Clinical Director

Matt Robison is the Clinical Director for Developmental Pediatrics and Psychology. In this capacity he serves as supervisor and liaison for clinical activities in those departments. He also supervises field activities for social work students completing placements at the Child Study Center. Prior to joining the staff at the Child Study Center, Mr. Robison worked in the behavioral health field specializing in work with children and families.

Mr. Robison holds a Bachelor's Degree in Psychology from Louisiana State University and a Master's Degree in Science and Social Work from the University of Texas at Arlington. He is licensed by the Texas State Board of Social Work Examiners. In addition to his duties at the Center, he works with several community organizations including Mental Health Connection of Tarrant County and the IDD Needs Council of Tarrant County to help improve the lives of children in Texas. He is an adjunct faculty member in the Harris College of Nursing and Social Work at Texas Christian University and serves on the Department of Social Work's Field Advisory Council. He is also a proud member of the Child Study Center Young Supporters. 

x_jackson.jpgXochitl Jackson, M.D.

Medical Staff
Board Certified in Pediatrics 

Dr. Jackson joined the Child Study Center in 2017. She completed her undergraduate education at Harvard University where she graduated cum laude. She earned her medical degree from Columbia University’s College of Physicians and Surgeons in 2002. She completed a residency in pediatrics at Baylor College of Medicine in Houston. She served as a staff pediatrician for ten years at Eisner Pediatric & Family Medical Center, a Federally Qualified Health Center in downtown Los Angeles. During this time, she worked as lead physician in the Early Developmental Screening Initiative Learning Collaborative sponsored by the American Academy of Pediatrics and UCLA Center for Healthier Children, Families, and Communities. She held a voluntary faculty appointment as Clinical Assistant Professor of Family Medicine at USC Keck School of Medicine, supervising USC medical students in ambulatory pediatrics from 2011-2013.

Dr. Jackson holds Board Certification by the American Board of Pediatrics. She is a Fellow of the American Academy of Pediatrics and a member of the Cook Children’s Physician Network. In her spare time, she enjoys reading with her children, gardening, practicing the piano, and exploring Fort Worth culture with her family.

AMH_professional_photo-min.pngAnne-Marie Hain, M.D.

Medical Staff
Board Certified in Pediatrics 

Dr. Anne-Marie Hain joined the Child Study Center in 2017. She received her medical degree from the Medical College of Georgia in 1996, and completed internship and residency in pediatrics at Vanderbilt University in 1999. Dr Hain practiced general pediatrics in a private practice in Nashville, TN, while serving as a clinical faculty member at Vanderbilt University, from 1999 until 2012, when her family moved to Dallas. She established a pediatrics practice to provide consultation for children with concerns for complex ADHD and Autism Spectrum Disorder at Children’s Health Pediatric Group (formerly MyChildren’s) in 2012. Dr Hain participated in resident teaching of UT Southwestern Pediatrics residents, and in 2016, she joined the faculty of UT Southwestern, where she participated in teaching of both medical students and residents.

Dr Hain’s special interests in Developmental/Behavioral Pediatrics include ADHD (Attention Deficit Hyperactivity Disorder), and she has served as the Texas Pediatrics Society’s ADHD Content Expert for their recent Quality Improvement project for improving ADHD care in the state of Texas. She is trained in use of the STAT, the Screening Tool for Autism in Toddlers and Young Children, used for high level screening of children under the age of 4 years old with suspected Autism Spectrum Disorder (ASD) diagnosis. Dr Hain is board certified by the American Academy of Pediatrics and serves as the Co-Chairman of the Committee on Mental Health for the Texas Pediatrics Society.

matthew-robinson-web.jpgRebecca Neander, MSN, RN, CPNP-PC

Pediatric Nurse Practitioner

Becky Neander is an advanced practice nurse in the Developmental Pediatric Department at the Child Study Center. She holds a certification from the Pediatric Nursing Certification Board (PNCB) as a pediatric nurse practitioner. Ms. Neander earned her Bachelor of Science in Nursing from Texas Tech University in 1993, and her Master of Science in Nursing from the University of Texas at Arlington in 2000. Ms. Neander has 23 years of experience in pediatric nursing, with 16 years spent as a pediatric nurse practitioner. She spent four years in the Neurosurgery Department at Children’s Health in Dallas before moving to Texas Scottish Rite Hospital also in Dallas, where she worked in the Developmental Disabilities Department for 12 years. Ms. Neander’s focus there was on children with both developmental disabilities as well as spina bifida. She is a member of the National Association of Pediatric Nurse Practitioners (NAPNAP). Becky is also a member of the Cook Children's Physician Network.

Psychology Services 

Margaret_Dempsey.jpgMargaret T. Dempsey, Ph.D.

Director of Psychology
Licensed Psychologist

Margaret Dempsey, Ph.D. is a licensed psychologist who joined the Child Study Center in 2007. She graduated with her doctoral degree in School Psychology from the University of Texas at Austin. Dr. Dempsey completed her internship year in the Pediatric Psychology program at Michigan State University. Afterwards, she was an assistant professor at Tulane University for five years. Her work at the Child Study Center focuses on the evaluation and treatment for children and adolescents with learning disabilities, attention difficulties, autism spectrum disorders, intellectual disabilities, anxiety, and depression. Dr. Dempsey has also provided clinical supervision for pre-and post-doctoral students. 

Dr. Dempsey is a 2014 WPS 65th Anniversary Unlocking Potential Award recipient. She was recognized not only for her fifteen years of service to children and families in North Texas, but also for her high degree of professionalism, highly individualized approach to testing and treatment planning, constant pursuit of up-to-date measures and testing procedures and for her unwavering dedication to her clients.

tracy harrington.jpgTracy L. Harrington, Ph.D.

Licensed Psychologist

Tracy Harrington, Ph.D. is a licensed psychologist who joined the Child Study Center in 2009. She completed her Bachelor of Arts degree in Psychology at Oklahoma State University and her Master of Arts degree and Doctorate in Clinical Psychology at the University of Tulsa. Dr. Harrington completed her child and pediatric clinical internship and a one year fellowship at the University of Alabama at Birmingham. Her training sites included the Civitan-Sparks Interdisciplinary Clinics, a Leadership Education in Neurodevelopmental Disabilities (LEND) and University Center of Excellence in Developmental Disabilities training site (UCEDD), and Children's of Alabama. While in graduate school, Dr. Harrington was awarded the Scientist Practitioner Award in recognition of her work in meeting the ideas of the scientist practitioner model of psychology training and practice. 

Dr. Harrington's work at the Child Study Center primarily includes the evaluation and treatment for children and adolescents with autism spectrum disorders, intellectual disabilities, learning differences, attention difficulties, disruptive disorders, and mild mood issues. She enjoys providing evidence based therapy to families, such as behavior management training, to parents of young children with disruptive behaviors. Dr. Harrington regularly works with students and families from the Jane Justin School and the Autism Services program. In addition, she provides psychological consultative services to Developmental Pediatrics and to the Genetic Down Syndrome Clinic. 

chandler web.jpgReagan Kinnear, Ph.D., N.C.S.P

Licensed Psychologist

Reagan Kinnear, Ph.D. is a licensed psychologist and nationally certified school psychologist who joined the Child Study Center in 2016. She completed her Bachelor of Arts degree in Psychology at Texas Tech University and her Doctorate in Educational Psychology, with a focus in School Psychology, at Oklahoma State University. Dr. Kinnear completed her doctoral internship and a two and a half year postdoctoral fellowship at the John Hopkins University School of Medicine Department of Pediatrics and Kennedy Krieger Institute Department of Behavioral Psychology, a Leadership Education in Neurodevelopmental Disabilities (LEND) and University Center of Excellence in Developmental Disabilities (UCEDD) training site.

Dr. Kinnear comes to us from the Kennedy Krieger Institute, where she was a staff psychologist and a Director of Clinical Services for the Behavior Management Clinic. In this position, Dr. Kinnear provided family, individual and group therapy services for children aged 15 months through 12 years, as well as direct clinical supervision and ongoing training of graduate level externs, doctoral level interns and postdoctoral fellows.

Dr. Kinnear's work at the Child Study Center primarily includes behavior therapy/behavioral parent training and cognitive behavior therapy with children, ranging in age from 2 to 11 years old, and their families. Common behavior problems addressed in treatment include noncompliance/defiance, tantrums, verbal aggression, mild physical aggression, anxiety, toileting difficulties, and sleep concerns. Dr. Kinnear is a certified therapist and Level I trainer for Parent Child Interaction Therapy (PCIT).

Applied Behavior Analysis Department

Duy Le resized.jpgDuy D. Le, BCBA

Director of Applied Behavior Analysis and Education
Rector Family Chair in Applied Behavior Analysis

Duy Le, BCBA, became the Director of Applied Behavior Analysis and Education in 2014. He is responsible for directing and overseeing the Autism Services Department, Behavior Disorders Clinic, and Jane Justin School.

Previously, Duy served as Director of Applied Behavior Analysis Services where he provided behavior analytic services and designed specialized treatment for children with developmental disabilities. He holds the Rector Family Chair in Applied Behavior Analysis. Prior to joining the Child Study Center, he was a program manager for an interdisciplinary treatment team serving children and adolescents in a psychiatric hospital in Louisville, Kentucky.

Mr. Le received a Master of Science in Behavior Analysis from the University of North Texas and a Bachelor of Science in Psychology from the University of Texas at Arlington. Duy is certified by Behavior Analyst Certification Board, Inc. He served as a Council Member for the Texas Association for Behavior Analysis (TxABA) and is a member of the International Association for Behavior Analysis. In addition, he is published in numerous peer-reviewed journals and has served as a guest reviewer for the Journal of Applied Behavior Analysis.

Jane Justin School

tracie mann.jpgTracie Mann, Ph.D., BCBA-D

Director of Jane Justin School
Jack B. Morris Chair in Education

Tracie Mann, Ph.D., BCBA-D, joined Jane Justin School in 2012 as a Behavior Analyst where she provided behavior analytic services and designed specialized education for children with developmental and learning differences. She was appointed Interim Director of Jane Justin School in January 2014 until the completion of her Ph.D. in June 2014 when she was offered the permanent position of Director. Prior to joining Child Study Center, Dr. Mann served as a Lead Teacher and Principal of Century School in Lawrence, Kansas until 2007. Following the completion of her Master's degree, Dr. Mann opened the Kansas City Child Learning Center in partnership with the Kansas City Autism Training Center to serve preschool aged children with and without developmental and learning disabilities.

Dr. Mann received her Ph.D. in Behavioral Psychology from University of Kansas under Drs. Edward Morris and Greg Hanley. She also obtained her M.A. in Human Development and B.A. in Human Development and Family Life from University of Kansas.