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Speech-Language Pathology | Occupational Therapy
Autism Center

The Team at AC-ULM

The primary professionals supporting the AC-ULM include the following:

portraitDavid L. Irwin, Ph.D., CCC-SLP, ASHA Fellow, Professor and Program Director, Speech-Language Pathology Program at ULM. Dr. Irwin serves as Director/Speech-Language Pathologist for the Autism Center at the University of Louisiana at Monroe. He is certified by the American Speech-Language-Hearing Association and holds a State of Louisiana license as a Speech-Language Pathologist. He is a nationally certified examiner for the Autism Diagnostic Observation Schedule-2 (ADOS-2) and a research-reliable administrator for the Autism Diagnostic Interview-Revised (ADI-R) by the Western Psychological Corporation®. These instruments are often referred to as the “gold standard” for evaluating individuals with ASD and their families. Dr. Irwin served as Director of the SPLP program for 16 years, followed by 8 years at LSU Health Sciences Center at Shreveport. Dr. Irwin served as Director of the Children’s Center and Head for Department of Clinical Services at Louisiana State University Health Sciences in Shreveport. While at LSUHSC-S he established the Autism Collaborative Research Group in conjunction with the Departments of Psychiatry, Radiology, and Pediatrics. He has a long history of obtaining grants from federal, state, and local agencies totaling $1.7 million. He has over 120 professional presentations, publications and books. His primary areas of interest are children with ASD and Social Communication Disorder. He has served as President of Louisiana Speech-Language-Hearing Association and holds Honors of the Association. He may be contacted at irwin@ulm.edu or 318.342.3190.


portraitLinda Bryan, Ph.D., CCC-SLP, is a former Associate Professor and Director of the Literacy Clinic within the Department of Speech-Language Pathology. Dr. Bryan currently serves as adjunct faculty for the Department of Speech-Language Pathology at the University of Louisiana at Monroe (ULM) having retired from full-time employment in 2013. She is certified by the American Speech-Language-Hearing Association and licensed by the state of Louisiana as a Speech-Language Pathologist. Dr. Bryan serves in several capacities in her part-time employment including: Intake Coordinator for the Autism Center (AC), team member for the diagnostic team, teaching classes within the Department of Speech-Language Pathology, and supervising graduate clinicians, including a Social Skills group within the AC. Dr. Bryan has received many hours of training in various research-based programs related to autism including DIR/Floortime and SCERTS. She can be contacted at lbryan@ulm.edu or 318.342.7948.


portraitAnne Marie Sisk, M.S., CCC-SLP, Clinic Director and Clinical Assistant Professor, Speech-Language Pathology Program at ULM. Ms. Sisk is certified by the American Speech-Language-Hearing Association and holds a State of Louisiana license as a Speech-Language Pathologist. She is currently enrolled in the Infant and Early Childhood Development PhD program designed by Dr. Stanley Greenspan at Fielding Graduate University. Her research interests include social intervention models for preschool-aged children with autism and clinical supervision. Ms. Sisk has received formal training for the ADOS-2 and the ADI-R. She may be contacted at sisk@ulm.edu or 318.342.1393.


portraitBarbara Johnson, OTD,LOTR, Clinic Director and Assistant Professor in the Master of Occupational Therapy Program at ULM.  Dr. Johnson obtained her bachelor of science in occupational therapy in 2003 from ULM and completed the doctoral program of occupational therapy at Rocky Mountain University in Utah in December of 2015. Dr. Johnson holds a National Board for Certification In Occupational Therapy, NBCOT and an Occupational Therapy Sate License from the Louisiana State Board of Medical Examinars. She has presented at the 2017 Louisiana Special Education Superconference and at the April 2017 AOTA Centennial Conference. Her research interest include genetic testing for autism markers and early identifiers of autism, exploring the correlation between handedness and learning disabilities, and the impact of occupational therapy in women with substance abuse.  She may be contacted at bjohnson@ulm.edu or 318.342.5582.