NACS develops, teaches, practices, and advocates for state-of-the-art diagnostic assessments for individuals with autism spectrum and related neurodevelopmental disorders.

Gold-Standard Clinical and Diagnostic Evaluations

NACS is private pay only and does not take any insurance. However, Dr. Saulnier can provide a superbill to submit to insurance companies as needed.
Early detection, accurate assessment, and appropriate treatment and intervention lead to optimal outcomes for individuals with autism and related conditions.
NACS founder Dr. Celine Saulnier is a renowned clinician-scientist with over 20 years of experience in research and clinical diagnostic assessment. Under her leadership, NACS brings research-grade diagnoses to infants, children, adolescents, and adults in a community clinical setting.
With comprehensive, individualized evaluations of each individual’s strengths and vulnerabilities, we provide guidance for the support each person needs to grow toward their fullest potential.

Remote and On-Site Diagnostic Evaluations and Consulting

When it’s not convenient for consultations or diagnostic evaluations to be conducted in-person at our facility, NACS could travel remotely where state licensure guidelines permit. NACS also provides consultative services remotely (onsite or electronically) for assessment and diagnosis, recommendations for treatment and intervention, and program development.


¹Where license permits.

Dr. Saulnier is an out-of-state telehealth provider for the state of FL:

Lectures, Webinars, and Continuing Education Workshops

NACS founder Dr. Celine Saulnier is a popular lecturer and presenter at conferences, conventions, and symposia for clinicians, researchers, advocates, educators, and organizations for individuals with neurodevelopmental disorders. Her popular lecture and workshop topics include:
A Comprehensive Developmental Approach to the Assessment and Diagnosis of Autism Spectrum Disorders
Early Screening and Detection Methods for Infants and Toddlers with and at Risk for ASD
Overview of Treatment and Intervention Practices for ASD
Training on the Vineland Adaptive Behavior Scales, Third Edition
Adaptive Behavior Profiles in Autism Spectrum Disorders: Implications for Functional Outcome
Case Studies in Adaptive Behavior Profiles for Neurodevelopmental Disorders
Autism Science Foundation’s
4th Annual Day of Learning:
A Vineland-3 Overview Webinar (Pearson Clinical):
Adaptive Behavior Assessment for Autism Spectrum Disorders Webinar (Pearson Clinical)
Vineland-3 Case Studies for Neurodevelopmental Disorders Webinar (Pearson Clinical)
The Testing Psychologist: Research-Informed Autism Assessment w/ Dr. Celine Saulnier

Consulting on Grants & Research Studies for Clinical Characterization

Scientists studying autism spectrum and related disorders rely on diagnostic evaluations (often referred to as clinical characterization or behavioral phenotyping) that are scientifically rigorous and reliable, and that meet gold-standard requirements of funding agencies such as the National Institutes of Health (NIH). NACS provides scientists with research-reliable, gold-standard diagnostic assessments while ensuring that participants and their families are receiving excellent clinical care. We also help train scientists and research staff on how to collect high-quality phenotypic data.
NACS founder Dr. Celine Saulnier spent nearly 20 years within nationally renowned clinical research centers. She has published in peer-reviewed journals and has been an investigator on numerous federal and private foundation grants. She is the former director of research operations at the Marcus Autism Center, where she helped develop a large-scale clinical research infrastructure and clinical assessment core that provided behavioral phenotyping to ten scientific laboratories and contributed to the center’s designation as an NIH Autism Centers of Excellence. She also sits on the Autism Science Foundation’s scientific advisory board and is a Program Committee member of the International Society for Autism Research’s Annual Meeting.

Leveraging Dr. Saulnier’s deep expertise, we can help you conduct your autism research
based on the highest standards of evidence-based diagnostics.