
Kimberly Robertson, M.S., CCC-SLP, ATACP NLA Clinician
Director of Clinical Operations
Kimberly received her master’s degree in Speech-Language Pathology from the University of the District of Columbia and has completed the Assistive Technology Applications Certificate Program at California State University, Northridge. Kimberly moved from the east coast and now calls sunny San Diego home. She brings experience in both the pediatric clinical and special education settings.
Kimberly strives to provide a warm and nurturing clinic environment for clients, their families, and staff. Her extensive experience includes working with autistic children as well as developmentally delayed, hearing impaired, and verbally challenged children aided by the support of Augmentative and Alternative Communication (AAC). In the area of AAC, she completes assessments, programs systems, provides direct sessions, and training/consultation for families and educational teams. She believes in the importance of focusing on these three key points: presume competence, model, and add joy to communication.
She is intermediate level proficient in American Sign Language and is a Natural Language Acquisition (NLA) trained clinician. Kimberly especially enjoys working with young children and their families, focusing on child led play-based therapy to facilitate and enhance communication with a neurodiverse affirming approach.
Outside of work, Kimberly enjoys time with her family, traveling, the beach, and yoga.

Sheena Mackay, M.S., CCC-SLP, Speech-Language Pathologist
Sheena received her B.S. in Communicative Disorders and Deaf Education from Utah State University and her M.S. in Communicative Sciences and Disorders from New York University. She is licensed by the State of California and holds a Certificate of Clinical Competence from the American Speech-Language Hearing Association (ASHA). Sheena has worked for Specialized Therapy Services at The OAS Center since 2020. She has clinical experience, working in-person and virtually, serving both charter school students and pediatric outpatient clients with a wide variety of support needs. Her clinical interests include play-based early intervention, neurodiversity-affirming therapy, and school-age stuttering therapy. In her free time, Sheena loves spending time with her husband and son. They enjoy going camping in their RV and relaxing on the beach.

Dana Tappen, SLPD, CCC-SLP
Dana has been a pediatric speech therapist since 2004 and been with STS since 2012. Her experience includes working with charter schools, school districts, early intervention agencies, and as the director of a Non Public Agency. She also has worked at the university level as a clinical supervisor with CSUSM and currently serves as a part time faculty member at CSUN. She graduated from San Diego State University with both her bachelor’s and master’s degrees, later obtained the Special Education Advocacy Certificate from the University of San Diego, and recently completed her clinical doctorate at RMUoHP. Dana is a Hanen® Certified Speech Language Pathologist in: It Takes Two to Talk®, More Than Words®, and Target Word®. She has continued to further her clinical skills by receiving advanced trainings in the Picture Exchange Communication System (PECS), Lidcombe Fluency Program, The SCERTS ® Model, and DIR®/Floortime™ Model. Dana also completed the Social Thinking® Clinical Training program with Michelle Garcia Winner and uses the Social Thinking® methodologies as a part of assessment and treatment sessions. She truly believes in a team approach, working together with family members and other professionals in order to foster the best possible outcome for the whole child.

Courtney Rams, M.S., CCC-SLP
Courtney Rams has been a speech-language pathologist since 2015. She has worked at Specialized Therapy Services/The Oas Center for the past four years. Her special interests include early intervention, language disorders, articulation/phonology, social skills and Autism Spectrum Disorders. Courtney has experience working in hospitals, schools and private therapy clinics. Courtney received her bachelor’s degree in Speech, Language and Hearing Sciences and her master’s degree in Speech-Language Pathology from the University of Wyoming. She is licensed by the State of California, holds a certificate of Clinical Competence from the American Speech-Language Hearing Association (ASHA) and is a current member of ASHA.

Allie Tyner, SLPA
Allie was born in Texas, raised in Kansas, but became rooted in San Diego in the summer of 2013. She graduated from the University of Kansas in 2011 with her B.A. in Speech-Language-Hearing and a minor in linguistics. She obtained her SLPA license in January 2020 to pursue a career in speech and language exclusively, as she realized it is a true passion of hers.
Before working at the OAS Center as a SLPA, she worked as a behavioral therapist for 7.5 years with a specialized focus in autism and has experience working with a variety of other developmental & acquired disabilities. Allie has experience working with toddler age children, teenagers, and adults. Her other passions outside of work include hiking with her dog, guiding others to live healthy & active lifestyles, and running her own company related to food allergies, Allergy Safe Card.

Natalia Rodriguez
I was born and raised in San Antonio, Texas and just moved to San Diego. I attended The University of Texas at Austin for my Bachelors and Our Lady of the Lake University for my Masters. I’ve worked 5 years in a school setting, working primarily with bilingual students. I speak Spanish fluently.
I enjoy playing soccer, reading, and being outdoors in my free time. My next goal is to learn how to surf! I also love to travel, I’m always up for a travel adventure!

Mandy Case, SLP
Mandy received both her Bachelor’s Degree (2002) and her Master’s Degree (2004) in Communicative Disorders from San Diego State University. She holds her Certificate of Clinical Competence from the American Speech Language & Hearing Association (ASHA), the Clinical Rehabilitative Services Credential, and has been a licensed Speech Language Pathologist in Texas and California. Mandy has worked as an SLP serving children from 18-months to 18-years old in a variety of settings, including hospitals, private practice, in-home care, and school-based settings, using both in-person and virtual formats. She especially loves working in early intervention, helping young children access their world by developing language. Mandy started working with Specialized Therapy Services in 2017 and loves being a part of a supportive team of professionals with a passion for helping people reach their fullest potential. In her free time, she loves to play games, travel, take photos, and spend time with family.