Established in 2019 by a parent to a child with autism and a school administrator dedicated to helping children with learning differences, Frazier Behavioral Health gets it. That fundamental and personal understanding of the everyday challenges and triumphs informs how we provide evidence-based treatment for neurodiverse individuals and training for schools. Our multidisciplinary team is sensitive to individual needs while creating comprehensive and tailored plans for improved outcomes.



Frazier Behavioral Health strives to increase the quality of life for every neurodiverse person by providing meaningful high-quality therapy. We provide therapy that is unique to the individual needs, evidence based, and patient and family centered.


In our vision, every neurodiverse person has the opportunity to reach their full potential. People across the lifespan will have access to high quality and assessment and evidence-based therapies across a variety of treatment modalities. We envision providing support where people can benefit including clinic, home, school, community, or wherever they have needs.


We strive to provide unique care that is specialized to meet the needs of each individual patient and their family, because we see each patient as one of a kind. 
We push one another to research and use new and innovative techniques and ideas.
We create new ways to provide patient-and-family-centered care.
We improvise to meet patient and family needs, when needed, to provide optimal patient care.


Meet Our Leadership Team

Allison Frazier, MA, BCBA, COBA

Allison Frazier is a Board Certified Behavior Analyst with over 12 years experience in behavioral health. Her areas of expertise include direct behavior therapy with clients 18 months to 36 years old; private and public school consultation; parent and teacher training; community education; and clinical supervision.​ She previously directed the Cleveland Clinic Center for Autism (CCCA) Outreach Department and was the assistant director of their summer program. Allison was a school administrator and behavior specialist at the Julie Billiart Schools (JB). During her tenure at JB, she founded and directed a national award winning camp. Throughout her career, she worked as an adjunct professor at John Carroll University, Ursuline College, and Lakeland Community College. Allison currently serves on the board at the Cuyahoga County Board of Developmental Disabilities.

Jillian Aiello
Director of Client Relations and Internal Operations

Jill Hyland is a client relations professional dedicated to helping neurodiverse patients and their family members navigate the journey from patient intake to treatment. Jill will be responsible for supporting and overseeing negotiation and contracts for the end-to-end clinical and school services. Additionally, Jill will maintain relationships with existing and potential clients in the schools and the community while supporting internal team efforts. Jill has a Bachelor of Arts degree from the State University of New York at Potsdam.

Leslie Speer, PhD, BCBA, COBA, NCSP
Clinical Director

Leslie Speer is a licensed psychologist, board certified behavior analyst, and a nationally certified school psychologist with over 15 years of experience working with children, adolescents, and adults. Her areas of expertise include the assessment and treatment of autism spectrum disorder across the lifespan, parent and teacher training, school consultation, and community education. Dr. Speer previously served as the Program Director of the Autism Spectrum Evaluation Team (ASET) at the Cleveland Clinic Center for Autism. As Program Director, Leslie oversaw and coordinated multidisciplinary evaluations of children, adolescents, and adults suspected of having an autism spectrum disorder. Dr. Speer also coordinated a sibling clinic, medication monitoring clinic, and parent support groups, as well as offered consultation services regarding behavioral difficulties, treatment planning for individuals with an autism spectrum disorder, school difficulties, and advocating for student’s needs in the classroom / school. After ten years on staff at the Cleveland Clinic, Dr. Speer transitioned to a staff position at MetroHeath within the MetroHealth Autism Assessment Clinic (MAAC). At this time Dr. Speer also began her private practice, joining Meghan Barlow and Associates, with a continued emphasis on the evaluation of autism spectrum disorders across the lifespan. She remained in these positions until joining the Quadrant Biosciences and Frazier Behavioral Health team.

Melissa Yusko, MA, CCC/SLP
Coordinator of Speech Services & Speech Language Pathologist

Melissa Yusko is a licensed Speech/Language Pathologist with 10 years of experience as a pediatric outpatient therapist working with children of varying ages and skill levels. Melissa has a Bachelor of Science in Education and Allied Professions from the University of Dayton and a Masters of Arts in Communication Sciences from Case Western Reserve University. Melissa previously worked as an outpatient therapist at the Cleveland Clinic Center for Autism where she provided individual therapy and parent training to increase functional communication, receptive and expressive language, social/pragmatic language, and speech production skills.





Sara Rossman, MA, CCC/SLP
Speech Language Pathologist

Sara Rossman is a licensed Speech Language Pathologist with 6 years experience providing therapy to children aged 4-12 building expressive, receptive, pragmatic, and articulation skills. At the Julie Billiart school she provided individual, small group, and whole group social skills instruction. She ran the pre-school section of the Beyond Camp program preparing the youngest learners for school. She obtained her Master’s Degree from Eastern Michigan University.

Lauren Jeunnette, MA, CF/SLP
Speech Language Pathologist

Lauren Jeunnette is a Speech-Language Pathology clinical fellow with a Bachelor of Science in Health Sciences from The Ohio State University and a Master of Arts in Speech-Language Pathology from the University of Akron. Lauren is a certified Augmentative and Alternative Communication (AAC) specialist. Lauren previously worked as an outpatient therapist at Building Blocks Therapy, providing specialized speech-language therapy services to children with Autism, where she provided individual therapy to improve social/pragmatic language, speech production, functional communication, expressive language, and receptive language. 


Brittany Schwesinger, M.Ed., BCBA, COBA
Coordinator of Behavioral Services & Behavior Analyst

Brittany Schwesinger is a Board Certified Behavior Analyst, Certified Ohio Behavior Analyst, and licensed Intervention Specialist. She has a Bachelor's of Science in Education from Miami University and a Master's of Education with a concentration in Applied Behavior Analysis from Arizona State University. Brittany has ten years of experience working with individuals with disabilities ages 5-22 in the school, clinic, home and community settings. Prior to joining Frazier Behavioral Health, Brittany worked as the Clinical Director at New Story Schools. Brittany began her career at the Cleveland Clinic Center for Autism as a Classroom Behavior Therapist, Coordinating Teacher, and Coordinator of Educational Services. 

Alyssa Crawford, M.Ed., BCBA, COBA
Behavior Analyst

Alyssa Rafoth is a Board Certified Behavior Analyst and licensed Intervention Specialist. She has a Bachelor of Arts in Education from the University of Mount Union and a Masters in Arts from Ball State University. Alyssa has over seven years of experience working with children with disabilities ranging in a variety of skill levels. Alyssa previously worked for the Cleveland Clinic Center for Autism as a Classroom Behavior Therapist.





Emily Brindza M.Ed., BCBA, COBA
Behavior Analyst

Emily Brindza is a Board Certified Behavior Analyst and Intervention Specialist. She earned her Bachelor's degree from Ohio University and her Master's degree from the University of Cincinnati. Emily has 7 years of experience as an intervention specialist and began her career in the Bedford City School District. In her previous role, she worked with elementary-aged students with disabilities in a self-contained classroom.

Ashley Berman, MA, BCBA, COBA
Behavior Analyst

Ashley Berman is a Board Certified Behavior Analyst in the greater Cleveland area.  Ashley has been working in the field of Applied Behavior Analysis for 9 years and has experience in a variety of settings, including residential, in-patient, school- and home-based behavior therapy.  She holds a Bachelors of Science degree in Communication Sciences and Disorders, Master of Arts degree in Special Education (Behavior Disorders track), and completed her Behavior Analysis coursework at the Florida Institute of Technology.  She is also a certified PEERS provider.  Ashley's areas of focus are supervision, caregiver teaching, reduction of severe/dangerous behaviors, functional communication teaching, and working with teens and adults.  

Mileena Cook, M.Ed., BCBA, COBA
Behavior Analyst

Mileena Cook is a Board Certified Behavior Analyst. She earned her Bachelor's degree from Ohio University in Special Education and a Master's of Science in Education with a focus on Applied Behavioral Analysis from Purdue University. Mileena has experience providing ABA services for 7 years in the following settings: homes, schools, clinical, and the community. She has worked with children of a variety of ages (including early intervention) and abilities. She started her career providing in-home therapy and recently transitioned from a clinical position. 

Nathan Ratkovsky, M.Ed.
Intervention Specialist

Nathan Ratkovsky is a certified Intervention Specialist K-12 (mild/moderate) and holds an Elementary Education teaching license in K-5. He earned his Bachelor's degree and Master’s degree from Mercyhurst College. He has 11 years of experience as an Intervention Specialist and began his career working with elementary-aged students (K-2) as well as middle school aged students (5-8). He has provided individual, small group, and whole group instruction to help guide children academically, socially, emotionally and behaviorally. Nathan has worked alongside with teachers to design and implement individualized programs that best fit the students' learning while tracking students progress. 

Frazier Behavioral Health, a subsidiary of Quadrant Biosciences Inc., is designed to provide families options for evidence-based therapies, consultation services, training in social behavior techniques and intervention strategies for children and adults with autism, ADD/ADHD and other neurodevelopmental conditions. Quadrant Biosciences Inc. is a life sciences company dedicated to improving the lives of children and families by delivering innovative diagnostic, therapeutic, and virtual care solutions for global health priorities. To learn more, visit