East Valley 480-892-9777

West Valley 623-334-5299

Speech Therapists

Amy currently works for the Scottsdale Unified School District, working with preschool children with communication disorders and delays. She has a contract position with Horizon Pediatric Therapy, treating school-aged children with communication disorders. Amy obtained her master's degree in speech-language pathology from The University of Northern Colorado in 2008 and a master's degree in elementary education from Northern Arizona University in 2003. She enjoys keeping current with speech and language evidenced-based practices while working with a variety of children with communication disorders. She has a special interest in Literacy and Language Development as well as Autism.

Amy is an ASHA certified SLP that graduated from the University of Central Arkansas in 2012 with a Master's degree in Speech-Language Pathology. She has worked in the Chandler Unified School District for the past two years working with preschool and elementary students in all areas of communication disorders. Amy enjoys working with a diverse clientele, but she has a special interest in working with children with autism, especially in the area of social skills. In her spare time, Amy enjoys running, hiking, and reading

Barb earned her Bachelor of Science Degree in Speech-Language Pathology in 1989 and her Master's Degree in Speech-Language Pathology in 1990 both from Illinois State University.  She has experience with both children and adults in a variety of settings.  She enjoys working with children and young adults with expressive and receptive language disorders, articulation, auditory processing disorders, cerebral palsy and down syndrome.  Barb holds a Certificate of Clinical Competence and has been a member of the American Speech-Language-Hearing Association since 1990.  

Most recently, she was a substitute teacher for grades K-8 in Colorado before moving to Mesa, AZ.  She and her husband enjoy going to their 3 kids' activities.  (Derrick at ASU, Mark at UofA, and Maddie, a student at RMHS).  Barb also enjoys taking long walks with her dog and entertaining family and friends when they come to AZ to visit.  

Beth received her Master's degree in Communication Disorders in 1993, from Arizona State University. She has been a Speech Language Pathologist for over 20 years, and has experience with both adults and children in a variety of settings. Beth has extensive experience in the area of feeding, but enjoys working with a diverse clientele. She lives in Gold Canyon with her husband and two teenage daughters, and enjoys yoga and hiking.

Cristie L. O’Toole, M.S., CCC-SLP, is a speech and language pathologist for Horizon Pediatric Therapy in Mesa, AZ. Cristie has a Master of Science degree in Communication and Sciences Disorders from the MGH Instititute of Health Professions in Boston, MA, a BA in Communications and a BA in Music from Edinboro University in Edinboro, PA.

Cristie has 7 years of experience as a speech-language pathologist working with preschool and elementary-aged children as well as adults. Cristie has experience working with a wide range of clients including, but not limited to, children and adults with: mild-severe expressive and receptive language delays, articulation disorders, apraxia, phonological disorders, mild-severe pragmatic difficulties, autism, fluency, epilepsy, executive functioning disorders, auditory processing disorders, reading and writing disorders, cerebral palsy, downs syndrome, TBI, dysphasia and aphasia.

Cristie was educated at the MGH Institute of Health Professions, in a program where the relationship between spoken and written language were greatly emphasized. The institute had a state-of-the-art Literacy Center located on campus working with children and adults with communication and reading difficulties.

Before working for Horizon, Cristie worked primarily as a speech and language pathologist in the school systems of Boston and Chicago. In the school system, Cristie was able to use her knowledge of written language to work with teachers in the classroom of students who were at risk for reading difficulties. She enjoyed watching the excitement from children as finally began to read and succeed. She also used her knowledge and skills in literacy to work in a private practice in Chicago treating both children and adults.

She has also used her expertise by serving as a clinical supervisor to graduate students from local universities. Cristie believes in the importance of sharing her knowledge with clinicians new to the field.

Heidi is a Speech-Language Pathologist and Feeding Therapist who received a B.S. in Education, SLP at Baylor University and a Masters Degree in Speech and Hearing Sciences from Northwestern University. ASHA certified and practicing for over 20 years, she has worked with a diverse clientele with an emphasis on early intervention and feeding. She has been trained in the Sequential Oral Sensory Approach (SOS) to feeding, the Beckman Oral Motor program, and Chain Feeding. The mother of 3, she enjoys traveling with her husband and creating jewelry.


Jenae received her bachelor's degree in Linguistics from Brigham Young University, and she graduated with her master's degree in Speech-Language Pathology from Northwestern University in 2010.  Since graduation, her work has focused on evaluating and treating a variety of diagnoses within the pediatric population.  She completed her clinical fellowship at a multidisciplinary clinic in Chicago, and she spent several years working in the early intervention systems in both Chicago and Boston.  Jenae is the mother of two little boys, and she enjoys baking, hiking, reading, and yoga.

Jessica received a BS and MA in Speech-Language Pathology from the University of Northern Colorado. Prior to that, she completed a BS in Business Management at Colorado State University. She began her career as an SLP in 2013. Jessica enjoys working with all ages and diagnoses, but has a particular interest in fluency disorders. She completed an internship at a clinic in Denver for people who stutter in 2013 where she discovered her love and passion for working with those who stutter. When she is not spending time with her amazing clients, Jessica enjoys running, baking, and spending time with her husband and two dogs, Fiona and Penelope.

Kelly graduated from Arizona State University in 2006 with a Bachelor’s Degree in Speech and Hearing Science and again from Arizona State University in 2011 with a Master’s Degree in Communication Disorders. She currently holds a Certificate of Clinical Competence and is a member of the American Speech and Hearing Association. Kelly currently works within a public school district. Her experience includes providing speech and language therapy to children with articulation and language disorders.

Additionally, she has also worked within a self-contained Autism class targeting social skills for the past two years. Kelly enjoys spending her free time with her fiancé, family, friends, and dogs. She also enjoys baking, reading, and Zumba.


Kim Schulze has been working as a Speech-Language Pathologist since 1998.  She obtained her B.S. in Speech-Language Pathology at the University of Tulsa and her M.S. in Speech-Language Pathology at the University of North Texas.  Kim has worked in various settings throughout Texas, Nevada, and Arizona, including public schools, charter schools, private schools, home health agencies, an outpatient adult rehabilitation center, and specialized programs for children with hearing impairments and children with Down Syndrome.

Currently, Kim works in Gilbert Public Schools and contracts with Horizon Pediatric Therapy after school hours.  She specializes in working with preschool-aged children and children with autism (aged 2-18 years of age).   

Laurie received her Master’s degree in Communication Disorders in 1993, from Arizona State University.  She has been working as a speech-language pathologist for 20 years, and has experience with both adults and children.  Her specialty areas are feeding disorders, and early intervention. She is also a board certified holistic health consultant.   Laurie has been married for 22 years and has 2 teenage children.  Her passion is healthy, happy living.

Marisa has a B.S. in speech and hearing science from Arizona State University and a M.A. in speech language pathology from University of Minnesota. She has several years of experience working with children with special needs. Marisa provides speech therapy to children of all ages with a variety of diagnoses. She also has experience in feeding therapy.

Mary Ellen has a masters in communicative disorders from the University of Wisconsin-Stevens Point and is certified through the American Speech and Hearing Association.  She also holds a teaching certificate for Early Childhood and has obtained certification through the Arizona Early Intervention Program.  She has worked in a variety of settings, with individuals of varying diagnosis and that have ranged in age from infants to adults.  She enjoys spending time with her family, hiking, quilting and reading.

Maura W. received a Master of Arts degree in Speech Language Pathology from Washington State University in May of 2014. She completed her final clinical internship at Cardon's Children Medical Center and fell in love with Arizona. Maura enjoys treating a variety of communication disorders and also has a special interest in pediatric feeding and swallowing. In her free time, she enjoys hiking, whitewater kayaking, and traveling. She is ecstatic to join the Horizon team!

Melissa graduated from Estrella Community College in 2012 as a Speech Language Pathology Assistant with Phi Theta Kappa honors.

She was introduced to rehabilitation services in 2009 when her granddaughter suffered a brain injury. So, she left her medical career of 20 plus years to pursue a career in rehabilitation and speech.

Melissa studied American Sign Language as her foreign language and has additional course work in deaf studies.

Melissa spends her free time with her husband, two sons, and three grandchildren. She enjoys movie nights, playing board games, and late night dramas on TV.

Ryan graduated from Arizona State University with a degree in Music Therapy and began working as a Board Certified Music Therapist. He obtained his certification as a Neurologic Music Therapist from Colorado State in 2009. Ryan has also completed his certification as a Speech-Language Pathology Assistant through Northern Arizona University. In addition to these roles, Ryan has been in Chinese Kenpo Karate for over a decade through the city of Tempe. He is the choir director at his church, and also gives private trumpet, piano and guitar lessons. He lives in Mesa with his wife and two children.


Sarah has been practicing as a pediatric speech-language pathologist since 1995. She completed her Bachelor's degree in Early Childhood Education at The University of Missouri-Columbia, and then received her Master's degree in Speech-Language Pathology from The University of Kansas. 

Sarah has experience treating children of all ages, with a wide variety of diagnoses. Her areas of specialty include Early Intervention and Augmentative and Alternative Communication (AAC).  She is a member of the American Speech and Hearing Association (ASHA) AAC Special Interest group. In 2010, she presented on "Implementing High-Tech AAC for Young Children with Multiple Disabilities" at The Assistive Technology Industry Association (ATIA) National Conference in Chicago, as well as at the annual International Convention for The Foundation for Microcephaly. Sarah also has a lot of experience treating children with motor speech disorders, such as Childhood Apraxia of Speech (CAS).

In 1998, Sarah relocated to Tempe, Arizona from the Kansas City area. She loves living in Arizona and does not miss the Midwestern winters! Sarah serves on the Board of Directors of the Down Syndrome Network of Arizona www.dsnetworkaz.org, and helps to lead a national photography community www.photoadvclub.com.  She enjoys being Auntie, spending time with friends & family, travel, photography & hiking.

Shannon Stillwell first attended Middlesex County College in Edison, NJ where she studied modern languages. She graduated from MCC in 1999 and began the speech language sciences program at Kean University in Union, NJ. She obtained her Bachelor's and Master's degrees from Kean in 2002 and 2004. She began working as a speech pathologist in the Warren County school district in NJ for two years. She moved to AZ in 2006 and worked one year in the Tolleson School District. At the same time, Shannon began per diem work at a small clinic and fell in love with the structure of the clinic setting. She has worked in the clinic setting since 2006. She loves the one-on-one time spent with each individual child and appreciates the constant family contact and communication the clinic provides.

After nine years of being a speech pathologist, Shannon's favorite population to work with is early intervention (children aged 1-3). She has the most experience with children with language, articulation and auditory processing delays. She has also worked with children with oral motor and feeding (sensory and behavioral based) difficulties. She also enjoys consulting with other people involved in a child's care (i.e. occupational, physical therapists, etc...) and giving recommendations and home programs to parents.

When not at work, Shannon enjoys traveling, shopping, and spending time with her husband, a physical therapy technician. They have two dogs and enjoy spending time with family and various outdoor activities.

Sylvia is an Arizona native, and is about to finish up a Bachelor's degree in Speech and Hearing Sciences from Arizona State University. She has been a Speech Language Pathologist Assistant for about 3 years now and loves working in the field. Sylvia is a bilingual therapist and is excited to start at Horizon to serve families who may need bilingual therapy. Sylvia is a huge Disney fan, and enjoys baking on her free time. A big part of her life is her family and loves to make the most out of everyday with the people she loves. Sylvia can't wait to be a part of the team we have here at Horizon Pediatric Therapy!

Vanessa Berrios, M.S. CCC-SLP is originally from northeast Pennsylvania. She completed her undergraduate degree in 2005 at the Univ. of New Hampshire in Communication Sciences and Disorders.Vanessa has a graduate degree was from East Stroudsburg Univ. of PA in the area of Speech Pathology in 2007. She moved to AZ after graduate school and obtained a job for a school district here. Vanessa continues to work for both the school district, Horizon Pediatric Therapy and Bright Horizon Rehab Therapy. Her areas of specialty are in phonology and language disorders.