Autism Diagnostic
Evaluations
We are now offering comprehensive Autism diagnostic evaluations for children (as young as age 5), adolescents, and adults. Evaluations are available in both the Temple and San Marcos office locations.
Mistee Jefferies
PMHNP-BC, IBCCES Certified as an Autism Specialist
Mistee Jefferies is IBCCES Certified as an Autism Specialist and completed formal training in the ADOS-2 (Autism Diagnostic Observation Schedule, Second Edition) through the Sunfield Institute. The ADOS-2 is widely recognized as the gold standard observational assessment tool used in Autism diagnosis across the lifespan.
Her Approach
Her approach is structured, respectful, and grounded in current best practices. Each evaluation includes:
• A thorough clinical evaluation to gather developmental and health history
• Standardized assessment measures using the ADOS-2
• Clear diagnostic impressions and treatment recommendations
• Written report you can use for school, therapy, and community support
Autism Traits
If you have concerns about developmental differences, social communication, sensory needs, masking, burnout, or possible Autism traits at any age, an evaluation can offer clarity, direction, and a path forward.

Get in Touch
We do not have a waitlist, if you are interested in an Autism diagnostic evaluation, please call our office today!
(512) 667-7506.