Meet The Team


Rachel Kittenbrink


Executive Director 

Dr. Kittenbrink received her master’s degree in Special Education from Vanderbilt University and Ph.D. in Special Education from The University of Pittsburgh. Recently, Dr. Kittenbrink served as an educational consultant and behavior analyst with the PaTTAN Autism Initiative and as an adjunct professor for the University of Pittsburgh, teaching courses in special education and applied behavior analysis. Her research interests include peer-to-peer mand training and peer support programs. Kittenbrink has served as an editorial reviewer for RPSD, and has developed a passion for serving diverse populations through almost 20 years of experience in direct care, administrative, teaching, and consultative roles.

Kittenbrink's various experiences have allowed her to work with a wide range of ages (birth through adulthood) and supporting a wide array of learning needs (individuals with autism, learning disabilities, intellectual disabilities, and emotional disorders). Kittenbrink serves as a volunteer coordinator for the One-to-One Special Needs Ministry at Allegheny Center Alliance Church and provides consultation, training, and professional development services to the South East Asia Prayer Center for The Chinese American International Cooperation Training for Children with Autism project.


Lisa Burke 

M.Ed., LBS

Operations Director

Lisa graduated from St. Vincent College with a Bachelor's degree in Psychology in 2005 and a Master's Degree in Child Psychology from Duquesne University in 2007. Prior to joining the PBS community she worked in community-based mental health for 15 years. During this time Lisa supported families in a wide range of capacities including direct service, clinical oversight,  administration, and management. She has a special interest in improving access to quality ABA services for children with Autism and other developmental disabilities. 


Chris Burke


Systems and Consultation Director

Chris received his Masters of Education with a specialization in Autism from the University of Pittsburgh in 2010. He completed graduate-level ABA coursework from the Florida Institute of Technology and obtained his BCBA in 2018. Chris is also a Licensed Behavior Specialist, and prior to joining the PBS team he worked in community-based mental health for 13 years. During this time his focus was on supporting Masters Level clinicians, helping them to develop treatment, and improving the overall quality of care provided to young children with Autism and their families.  At PBS, his primary role is to support teachers, students, and families in a school-based setting. He remains dedicated to ensuring that children with special needs receive the highest quality instruction possible. He is also interested in increasing children's access to high-quality care through the use of digital technology.


Abigail Schifano


Education Director

Abbey received her Master of Arts in Elementary Education and Special Education, as well as a Bachelor of Multi-Disciplinary Studies from West Virginia University. She also received her BCBA in November of 2017. Abbey has always had a passion for working with children diagnosed with Autism. She started working with children diagnosed with Autism in high school, and after receiving her degree, began teaching and directly servicing students. Abbey has been employed in several classrooms that participated in the PaTTAN Autism Initiative teaching students various skills ranging from language skills to daily living skills. Abbey has been a team member of PBS since July of 2017. Aside from teaching and servicing children directly, her passion is to help families in any way possible. 


James Miller


Clinical Director 

Jim received his master’s degree in Education from Arizona State University. Before joining PBS in June of 2018, Jim worked as a behavioral analyst and administrator at a private school for students with autism. In addition to working with learners, Jim has a passion for employee training and development. 


Courtney Grondziowski


Director of Partnerships and Outreach

Courtney joined PBS as the Director of Partnerships and Outreach in October 2020. She received her bachelor's degree in psychology from Saint Vincent College in 2015. In 2019, she graduated from the University of Pittsburgh with a Master of Science in Applied Developmental Psychology. At PBS, she serves as a liaison between PBS, the Allegheny Center Alliance Church ministries, organizational partnerships, and the Northside community as a whole. Her mission in the field is to promote and expand equitable access to quality ABA services in neurodiverse communities. 


Nicole Livingston


Administrative Coordinator

Nicole graduated from Indiana University of Pennsylvania in 2010 with an undergraduate degree in Sociology with a concentration in Human Services. Previously, Nicole worked in a community-based organization in both a clinical and administrative role for over 10 years. Through these experiences she had the opportunity to service families both in direct service delivery and administrative support. She is passionate about quality service delivery as well as staff development and professional growth. Nicole is excited to continue providing support to staff and families as part of the PBS team!


Erica Simmons


Behavior Analytic Consultant External

Erica graduated from La Roche College with a Bachelor’s of Arts in Elementary Education and Special Education. She received her Masters in Special Education specializing in Applied Behavior Analysis from the University of Pittsburgh. She earned her BCBA in August of 2017. Erica found her passion for working with children with Autism while taking a special education course in college, and quickly added Special Education as a focus to her course work. Prior to joining the PBS team, she was employed in various classrooms teaching children with Autism for the last 9 years. She also was a Clinical Supervisor at an in-home provider and provided clinical assessments, family training and supervised registered behavior technicians. Erica is very dedicated to providing all children a high level of care and ensuring families are valued and informed members of their child’s team.  


Cody Webb


Clinical Supervisor

Cody Webb attended Robert Morris University and earned his bachelor’s degree in psychology in 2011. He then completed a Master’s program through Arizona State University in Curriculum and Instruction with a focus in Applied Behavior Analysis in 2014. He has worked in the field of special education since 2009, in both face to face and cyber school settings. In 2017, Cody passed the board exam to receive his BCBA. 

Cody and his wife, Ashley, live in Pittsburgh with their dog, Rory. He enjoys going camping and playing basketball during his free time. He’s also looking forward to continue learning and growing from the individuals he works with and his experiences in the field. Cody is happy that he has the opportunity to help others to improve and develop new skills on a daily basis.


Caitlin McMaster


Clinical Behavior Analyst

Caitlin has a Master’s Degree in Education from The University of Pittsburgh.  She began her career in Denver, Colorado as a Special Education Teacher within an alternative school.  In this setting, she worked with students with various social, emotional, and cognitive disabilities. Caitlin moved back to Pittsburgh to focus her career within the field of ABA, and completed a Master's program specializing in Applied Behavior Analysis through the University of Pittsburgh. Caitlin received her BCBA in April 2021 and Behavior Specialist license in June 2021. Caitlin has been a team member of PBS since August of 2019. She is devoted to supporting individuals with special needs and using best practices to ensure positive outcomes for all clients, families, and team members.

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Jill Warshaw


Clinical Behavior Analyst

Jill  graduated from the University of Pittsburgh with a Master’s of Arts in Teaching and an MEd. in the Deaf and Hard of Hearing. She completed the Applied Behavior Analysis course sequence from the Florida Institute of Technology. Jill is also a Licensed Behavior Specialist, and prior to joining the PBS team, she worked with children with Autism in an ABA classroom that was part of the PaTTAN Autism Initiative for 5 years. She then worked at a community-based organization as a therapist and as a Behavior Specialist Consultant for 4 years, providing supervision and servicing children directly. She is passionate about children receiving high quality care and achieving successful outcomes in their lives.


Lydia Diehl


Case Manager and ABA Instructor

Lydia received her bachelor’s degree from the University of Pittsburgh in 2020 in Natural Science with a concentration in Psychology. She has several experiences working with children from doing a great deal of research in an Early Social Development Lab at the University of Pittsburgh and has worked at The Western Psychiatric Institute and Clinic working on the child and adolescent inpatient unit as a Milieu Therapist. She also graduated from the University of Pittsburgh’s Master’s in Applied Behavioral Analysis program. She looks forward to helping PBS grow and continue helping children throughout her career.

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Rachel LaMendola


Case Manager and ABA Instructor

Rachel is new to living in Pittsburgh after spending most of her life in Virginia Beach, Virginia. Her desire for assisting individuals with Autism began at a young age through volunteer efforts with her church’s special needs ministry. After realizing a growing need and passion, she directed her studies to help those in the field and attended Virginia Commonwealth University earning a degree in Psychology. During this time in her undergraduate career, she was introduced to the field of ABA and has been involved ever since. Rachel is now attending the University of Pittsburgh with plans to graduate in 2022 with a Master of Education in Applied Behavior Analysis.


Renee Tillman


ABA Instructor

Renee is from Pittsburgh, PA, and she graduated from Penn State Main with a degree in Psychology and Information Technology. She spent over two years working with adolescents with autism. After having her daughter, she discovered a passion for a younger population, and she have been been with PBS since July 2020. 

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Charlotte Royston

ABA Instructor

Charlotte is from Massachusetts and moved to Pittsburgh to be a part of the PBS team. She has enjoyed working with children for a long time and is excited to continue providing meaningful services to children with autism. Charlotte will be attending Northeastern University next year to study the biological sciences and further her ability to support neurodiverse communities.