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Meet Our Team

Lisa Kimball, Chief Executive Officer

A results-driven Technology Executive with extensive experience in operations, governance and financial management, Ms. Kimball came to The Arc with a wealth of knowledge and expertise in running both for-profit and non-profit business. Having spent her career in cyber security, for twelve years prior to joining The Arc of Loudoun Ms. Kimball served as Vice President, Identity Management Solutions at Telos Corporation. Her current volunteer endeavors include Chairperson of the Commonwealth of Virginia’s Identity Management Standards Advisory Council (IMSAC), Board Member of the Northern Virginia Science Center Foundation/Children’s Science Center, Advisory Board Member of the Loudoun County Medical Reserve Corps, and Past-Chair for the Loudoun County Chamber of Commerce. Ms. Kimball has comprehensive knowledge of strategic planning, a vast background in legislative advocacy, and great success in designing and achieving organizational development and growth programs. Ms. Kimball volunteered with The Arc of Morris in New Jersey as a child, and is honored to work for an organization that has grown into an amazing resource for people with disabilities and their families.

YaTonya Abdullah, Chief Operations Officer

YaTonya holds a Bachelor’s degree in Special Education from Hampton University.  She has taught in self-contained classrooms for elementary-age students with various disabilities, including autism.  Upon relocating to NJ, she began working with the preschool population, as a liaison between school, families and school districts coordinating special education services for students with disabilities.  She essentially obtained her Master’s degree from New Jersey City University in Jersey City, NJ.  She came to The Aurora School, combining her experiences in Special Education and service coordination for children with disabilities to fulfill the position of Program Support Coordinator.  She later took on additional duties as Executive Administrative Assistant, which led to her transition to the position of Chief Operations Officer, working in conjunction with all programs of The Arc of Loudoun.  YaTonya stepped in as Interim Executive Director for The Arc of Loudoun during the transition of leadership.

Eileen Shaffer, Administrative Director of ALLY Advocacy Center

Ms. Shaffer received her undergraduate degree in Sociology from Mary Washington College where she was awarded the Jean Donovan Award to promote human rights.  She received her Master’s Degree in Social Work with a Specialization in Health from Virginia Commonwealth University. She has worked in group homes with adults with developmental and intellectual disabilities.  As the Resident Services Director of a large Continuing Care Retirement Community in North Carolina, she worked with individuals across the spectrum from independent adults, assisted living, skilled nursing, adult day care and dementia. Ms. Shaffer has experience providing social work in both hospital and home care settings. She has also been trained as a Mediator.  After returning to Virginia, she worked as a Care Manager in Loudoun and Fairfax Counties with older adults as well as individuals with developmental disabilities. She has experience coordinating care and services for her clients with community and healthcare resources. While working in care management, Ms. Shaffer began volunteering at ALLY and was later hired as the Advocacy Coordinator.  As the Administrative Director of ALLY Advocacy Center, she provides resources and referrals to families and clients; empowers families to advocate for their children in the IEP process; works with self-advocates and supports a variety of educational outreach programs to educate families and caregivers. ALLY Advocacy Center fills an unmet need in Loudoun County and Ms. Shaffer is able to walk families through the process of supporting a child with a disability and understanding the array of resources available and how to access them. Ms. Shaffer has been an active volunteer in Loudoun County, initiating volunteer programs with Backpack Buddies, Girl Scouts and the Loudoun Homeless Shelter.

Mandy Butler, Administrative Director of Open Door Learning Center

Mandy Butler has helped teach children with and without disabilities for over a dozen years and received her Child Development Associate (CDA) Credential for Preschools.  In 2000, Ms. Mandy started working at Grafton School as an Academic Specialist implementing educational programs and behavior plans.  In 2006, with extensive training in ABA (such as verbal behavior), she started working as an ABA Therapist at the Aurora School, working 1:1 with students with disabilities and developmental delays.  Ms. Mandy held the position of Lead Teacher at ODLC since we opened in 2010 and is excited to now be a part of the Support Team providing classroom and administrative support.

Jennifer Burto, Clinic Director, Aurora Behavior Clinic

Jennifer Burto joined The Aurora Behavior Clinic in February 2022 as a Senior BCBA, shortly after moving into the Director position in October 2022. Ms. Burto studied Elementary Education as an undergrad and earned her B.A. in Elementary Education from Florida Atlantic University. She began her career as a certified teacher in the public school system teaching for 8-years before pursuing the field of ABA. Ms. Burto graduated with a M.A. in Applied Behavior Analysis from Florida Institute of Technology and has over 4 years of experience providing Applied Behavior Analysis (ABA) services in public school and clinical settings. She is passionate about Early Intervention, functional communication, supporting families through their ABA journey, and supporting staff to give the best quality of services to our clients.

Amy Metaxa, Director of Special Education, Administrative Director of The Aurora School

Ms. Metaxa began her career as a Special Education Teacher in 2005 in Somers, Wisconsin as a teacher for students with severe cognitive disabilities. In 2012, she moved to Northern Virginia and continued her career with Prince William County Schools as a Special Education Teacher for students with learning disabilities and autism.  Amy graduated with a Bachelor’s degree in Psychology from The University of Wisconsin-Parkside. She has a master’s degree in Special Education from the Cardinal Stritch University-College of Education and Leadership, graduating Magna Cum Laude. During her time as an educator Ms. Metaxa has earned the designation of Highly Qualified Educator, served on numerous committees at the district and local levels, mentored new teachers, opened a new school, functioned as the Team Lead for a Special Education Department and has been the recipient of numerous accolades based on student performance. Her philosophy has always been that all students can learn and find success.

Helen Parker, Clinical Director of Ability Fitness Center

Dr. Parker graduated from Columbia University in 1998 with a master’s degree in Physical Therapy. She received her doctorate in Physical Therapy from Marymount University in 2003. She completed her NeuroDevelopmental Training (NDT) in 2001 and has been a board-certified Neuro Clinical specialist (NCS) since 2006. Dr. Parker is a Certified Clinical Instructor Affiliate (CCCE/CI) through the American Physical Therapy Association and has been an instructor at Mercy College Physical Therapist Assistant Program. She has spent her career as a physical therapist focusing on people with neurological conditions working in acute-care, inpatient rehabilitation and outpatient facilities. Dr. Parker has been actively involved with the Parkinson Foundation of the National Capital Area (PFNCA), with the Stroke Comeback Center (SCC), and with her stroke support group “The Survivors.”

Joanne Trimmer, Administrative Director of Project Horse

Joanne Trimmer graduated from Virginia Polytechnic Institute and State University in 1996 with a Bachelor of Science degree in Sociology and minor in Statistics. From her experience in behavioral and mental health at her first job at United Health Care’s Employee Assistance Program to her last four years working in youth suicide prevention, she brings years of knowledge in theoretical and applied mental health program development to her work at the Arc of Loudoun, and, more specifically, to Project Horse. She is certified as a Sources of Strength Trainer, an ACE Interface Trainer, in Mental Health First Aid, and in Youth Mental Health First Aid. Additionally, she is certified in Restorative Practices, Restorative Justice and Restorative Community Conversation Circles. Joanne proudly serves on the Loudoun Trauma Informed Community Team and Steering Committee and raises awareness of trauma sensitivity in the community. Joanne brings more than 20 years of Non-Profit and Organizational Development experience to Project Horse including working at Starlight Children’s Foundation, Stillbrave Childhood Cancer Foundation, and the Ryan Bartel Foundation. Having “doing no harm” and “rising by lifting others” as forefront mottos in her decision making, she passionately advocates for individuals and families to live their best lives.