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Steve Oas
Founder/President
Steve graduated with a Masters Degree in Communication Sciences and Disorders from James Madison University in 2000. He originally began working with children on the Autism Spectrum as behavior therapist and then worked as a Speech Therapist in the Madison County Public while completing his graduate program. While in the Master’s program Steve became well trained in both voice and fluency therapy for adults and children, often lecturing and running trainings for undergraduate students.
After college, he moved to San Diego and started working for Sharp Healthcare with both adults and children in a variety of communication and swallowing disorders. During his time at Sharp he learned the importance of looking at child development across the various cognitive processes including sensory, vestibular, attention and language.
In 2004, Steve founded Specialized Therapy Services (STS) working with charter schools, the San Diego Regional Center, health insurers, medical practices, and private clients providing speech therapy, assistive technology, and parent training. In 2007 Steve completed the Assistive Technology Certificate Program at Cal State Northridge. In addition to managing STS, Steve continues to work as a consultant for schools to assist and implement special education services, provide social skills training, assistive technology assessments/training, augmentative communication assessments, and supervision of speech pathology programs.

Erin Cunningham-Zumwalt
Operations Manager
Erin joined the Specialized Therapy Services team in 2013 as the Operations Manager.
With over 16 years of experience in healthcare recruiting and management, Erin brings to the table experience in business development and a strong expertise of the ever changing healthcare industry. She has managed a diverse project portfolio, including market analysis studies, managed care systems, product feasibility profiles, and customer satisfaction measurement.
Since coming on board with STS, Erin has spearheaded the exponential growth of Specialized Therapy Services and the inception and development of The Oas Center. Erin grew up in Northern California and has called San Diego home for the past 18 years.

Susan Workman, M.A. Clinical Psychology
MFT Associate Client Manager
Susan received her Masters in Clinical Psychology from Azusa Pacific University and Bachelors in Psychology from UCSD. After college, Susan began working with people with developmental disabilities in an independent living and day program setting. It was here Susan found her passion for working with people with developmental disabilities reach their fullest potential and life goals. As a Program Manager for a day program, Susan learned the importance of having a strong team working alongside clients.
After receiving her graduate degree, Susan worked with children, adolescents, and young adults in diverse settings including Uganda, Africa. She has experience working in schools, hospitals, and private practice. Susan started working for Specialized Therapy Services in 2015 and loves being a part of a team of people supporting populations with special needs.
Kelly Crum
Administrative Assistant
Kelly was born and raised in Northern California, but fell in love with San Diego while attending college. She graduated with a Bachelor’s Degree in Psychology and a minor in Mathematics from the University of San Diego. Kelly thoroughly enjoys working with children and is passionate about seeing them grow and learn new skills. She offers academic tutoring services at Specialized Therapy Services, and works for Snapology of San Diego, teaching STEAM classes to children with both typical and atypical needs. Kelly’s long-term goals include attaining a Master’s Degree that will allow her to continue pursuing her passion.