About Us

Sara Munsterman, M.S., CCC-SLP


Co-Founder and Speech-Language Pathologist

Sara Munsterman, M.S. CCC-SLP is a Speech-Language Pathologist who has always been passionate about working with children. She received her Bachelor of Arts in Communication Disorders from Baylor University and her Master of Science in Communication Sciences and Disorders from the University of Texas at Dallas. While attending graduate school, Sara worked as an in-home therapist for children with Autism using Applied Behavioral Analysis therapy. Sara has worked in a variety of settings such as private practice, the public schools, and in-home early intervention therapy. She has evaluated and treated children with developmental disabilities, Autism, Asperger’s Syndrome, Articulation Disorders, Phonological Impairments, Fluency Disorders, and Receptive/Expressive Language Delays. Sara is a member of the American Speech-Language Hearing Association and holds a Certificate of Clinical Competence and a Speech-Language Pathology Services Credential. She is also a member of the San Diego Chapter of the Autism Society of America. Sara enjoys working with children with Autism Spectrum Disorders. In her desire to develop her skills, Sara has attended seminars by speakers including Michelle Garcia Winner, Temple Grandin, Emily Rubin, and Brenda Smith-Myles. Sara has also attended continuing education courses in PECS and Floortime. Sara believes in developing a positive rapport with each child and his/her family and creating an individualized plan of therapy to help achieve improved communication skills.

Erica A. Lawson, M.A., CCC-SLP

54785681524__9C6395A5-D789-4D13-ABC8-4AE2B4913EB6Co-Founder and Speech-Language Pathologist

Erica Lawson, M.A., CCC-SLP, obtained her Bachelor of Science degree in Speech and Hearing Sciences at the University of Arizona and a Master of Arts degree in Communicative Disorders at San Diego State University. From a young age, Erica knew working with children was her passion. Throughout her undergraduate and graduate programs, Erica worked with children with Autism as an in-home therapist and in the public schools using techniques such as Applied Behavioral Analysis and Floortime. Erica has completed comprehensive speech and language evaluations and treated children from infancy through adolescence with a wide variety of speech and language disorders including Apraxia, Autism, Asperger‘s Syndrome, developmental disabilities, Articulation and Phonological disorders, Fluency Disorders, and Expressive and Receptive language disorders. Erica has also had the opportunity to provide language facilitation training to parents of young children with speech and language delays. She has worked in many settings including private practice, public schools, in homes, and in a social-language classroom as a co-teacher. Erica also completes Independent Educational Evaluations. Erica is a member of the American Speech-Language Hearing Association and holds a Certificate of Clinical Competence and a clinical rehabilitative credential. Erica has completed a variety of continuing education courses to further her education including SOS Approach to Feeding, Talk Tools Basic Training, PROMPT, PECS, and Hanen’s “It Takes Two to Talk” and “More than Words.”  Erica is dedicated to each family she works with and strives to help each child achieve new milestones by using a holistic approach to therapy.

Catherine Miller, M.A., CCC-SLP

Speech Language Pathologist

Catherine received her Bachelor of Arts and Master of Arts degree at San Diego State University.  She is a member of the American Speech-Language Hearing Association.  She is also a member of the California Speech-Language Hearing Association, and is a past award winner of that organization.  Catherine has extensive experience assessing preschool-aged children who have a variety of communication impairments.  She has worked closely with occupational therapists, teachers, and ABA service providers to implement school-based programs for children with autism.  Catherine has also worked with children with a variety of communication challenges.  She incorporates AAC (augmentative and alternative communication) methods as a positive behavioral support and to improve language comprehension and expression for individuals with various communication needs.

Catherine has a special interest in working with children on the autism spectrum and believes strongly in a social developmental approach to therapy.  She teaches families ways to facilitate communication throughout the day.  Catherine has specialized training in the Integrated Play Groups Model, a researched-based program in which peers are trained as play partners to facilitate social communication and play skills in children with ASD.  She has also completed courses and trainings in the SCERTS model, Carol Westby’s Play/Language seminars, and Michelle Garcia Winner’s Social Thinking programs.

Catherine’s interest in autism extends to the community, where she serves on the Board of a local non-profit organization, Include Autism, which provides skill based training and community inclusion experiences for individuals with ASD.

Kelsey Humlan, M.S., CCC-SLP

Speech-Language Pathologist


Kelsey Humlan, M.S., CCC-SLP, obtained her Bachelor of Science degree in Speech Pathology and Audiology at West Virginia University and her Master of Science degree in Communication Disorders at California University of Pennsylvania. Kelsey is passionate about working with children of all ages. She has experience working with children and adolescents with Autism Spectrum Disorder, developmental disorders, articulation disorders and expressive and receptive language disorders in the school and home settings. Kelsey has had the opportunity to work with AAC devices and this is a special area of interest for her. Kelsey has completed training in SOS Approach to Feeding. Kelsey strives to create a trusting and positive learning environment for both children and family members she works with.

Leigh Manalo, M.S., CCC-SLP 

IMG_0682Speech-Language Pathologist

Leigh received her Bachelor of Arts in Speech, Language, and Hearing Sciences from San Diego State University. She obtained her Master of Science in Speech-Language Pathology from Seton Hall University in New Jersey. Leigh has gained experience in working with individuals across the lifespan in the school and in private practice settings. She has worked with children and young adults with Autism Spectrum Disorder, developmental disabilities, Expressive/Receptive language delays, learning disabilities, and Articulation/Phonological Disorders. She is dedicated to maximizing the learning and development of each child through individualized approaches with the help of their family members.

valerieValerie Luby, M.S., CF-SLP

Speech-Language Pathologist

Valerie received her Bachelor of Arts from Montclair State University in New Jersey, where she majored in Psychology and minored in Linguistics. She obtained her Master of Science in Communication Disorders from William Paterson University in New Jersey. Valerie has always been passionate about working with children and their families. Prior to attending graduate school, Valerie worked as a behavioral therapist using Applied Behavioral Analysis therapy at a non-profit organization for children with Autism Spectrum Disorder. She has experience working with children and adolescents with a variety of disorders including Expressive/Receptive language disorders, Articulation/Phonological disorders, Childhood Apraxia of Speech, and Autism Spectrum Disorder. She is dedicated to working with children and their families to help achieve their communication goals.

709C1260-8508-45E2-9670-2FE83EC9EC92Lanni Reisinger, M.Ed., CCC-SLP

Speech-Language Pathologist

Lanni obtained her Bachelor of Arts from McDaniel College in Maryland, where she minored in Psychology and Deaf Studies and designed her own major: Development and Understanding of Language and the Mind. She received her Master of Education in Communication Disorders from University of Virginia. She has experience working in private pediatric practice, gaining an array of experience with varying ages and diagnoses including developmental disabilities, Articulation/Phonological Disorders, Autism Spectrum Disorder, Fluency Disorders, Receptive/Expressive Language Delays, Childhood Apraxia of Speech and hearing loss. Lanni is a member of the American Speech-Language Hearing Association and holds a Certificate of Clinical Competence. She has attended the 2015 and 2016 American Speech-Language Hearing Association Conventions as well as continuing education courses focusing on a variety of topics, such as feeding and fluency. Lanni strives to work with each individual child and family to improve the child’s communication skills and meet their true potential.

Kristin Rottino, M.S. CF-SLP

IMG_2177Speech-Language Pathologist

Kristin obtained her Bachelor of Arts degree in English Literature from the University of California, Los Angeles. She received her Bachelor of Science degree in Communication Disorders from Utah State University. During this time, she helped children with developmental delays at a private speech and language clinic in the early intervention and social language groups. While supporting patients with mild to severe behavioral tendencies, Kristin acted as a Behavior Interventionist using Applied Behavior Analysis methods. After graduating, Kristin moved to Springfield, Missouri where she completed her Master of Science degree in Communication Disorders at Missouri State University.

Kristin began her professional career as a Speech-Language Pathologist in an elementary school setting. She has experience evaluating and treating individuals with a wide range of communication impairments including: Autism Spectrum Disorders, Developmental Delays, Learning Disabilities, Intellectual Disabilities, Cerebral Palsy, Childhood Apraxia of Speech, Augmentative and Alternative Communication, Down syndrome, Visual/Hearing Impairments, Expressive/Receptive Language Impairments, Fluency Disorders, Articulation/Phonological Disorders, Tracheotomy, and Dysphagia. Kristin believes that caregivers and family members, working together, are a powerful partnership to help children to reach their maximum potential!

Lorraine Fonseca


Office Manager 

Lorraine is responsible for the day-to-day operation and clerical management of Speech Tree Therapy Center.  She is responsible for contacting various health insurances, designing and creating visuals for clients, and general organization of both offices.  Lorraine also has experience working for a law firm where she completes a variety of organizational tasks and assists with public relations.  Lorraine received her A.S., Health Science and Respiratory Therapy and also has a certification in Medical Coding and Billing.


Melissa Mejia


Front Office, Chula Vista

Melissa joined our team in November 2016.  She is responsible for keeping us organized in our Eastlake office!  Melissa completes a variety of organizational tasks, assists in rescheduling clients, and contacts doctor offices for insurance information.  Melissa has experience in working in medical offices and is a wonderful addition to our team.