Advancing Care for People with IDD and co-occurring mental health needs

NADD is an international resource for professionals, families, and organizations supporting individuals with intellectual and developmental disabilities and co-occurring mental health needs.

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Whether you’re just getting started or looking to advance your career, NADD offers training and certification pathways designed for professionals at every stage of their career.

Designed specifically for Direct Support Professionals (DSPs) working with individuals with intellectual/developmental disabilities and co-occurring mental health needs (IDD/MH). DSPs generally spend more time with the person with IDD/MH than any other professional. Their work requires an advanced level of technical expertise, professional skill and experience. NADD-DSP certification validates and provides assurance to individuals served, employers, and care teams that a direct support professional has met the established standards of excellence in providing services to individuals with IDD and mental health needs.

For professionals who deliver, manage, train, and/or supervise services for individuals with intellectual/developmental disabilities and co-occurring mental health needs (IDD/MH). This includes Case Managers, Behavioral Health Specialists, Special Education Staff, and Program Coordinators.

The NADD-CC certification is for licensed clinical professionals who work with individuals with intellectual and developmental disabilities and co-occurring mental health needs (IDD/MH). This certification confirms clinical competency in supporting individuals with IDD/MH, provides assurance to people receiving services, employers, professional peers, regulatory bodies, and third-party payers, demonstrates a commitment to best practices in IDD/MH care.

Trainings & Certification

Latest From NADD

43rd NADD Annual Conference
Registration for the 2026 NADD Annual Conference opens in late May 2026. The rates below are provided for planning and budgeting purposes.
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NADD Annual Conference 2025
NADD Annual Conference 2025 NADD Annual Conference 2025Each year, the NADD Annual Conference brings together professionals, educators, and advocates from across the field to advance care and support for individuals with intellectual and developmental disabilities and co-occurring mental health needs. Through keynotes, workshops, and shared learning, the conference reflects NADD’s ongoing commitment to strengthening the…
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NADD Annual Conference 2024
NADD Annual Conference 2024 Each year, the NADD Annual Conference brings together professionals, educators, and advocates from across the field to advance care and support for individuals with intellectual and developmental disabilities and co-occurring mental health needs. Through keynotes, workshops, and shared learning, the conference reflects NADD’s ongoing commitment to strengthening the community that serves…
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Trusted by the IDD/MH Dual Diagnosis Community

For over four decades NADD has been the leading voice in supporting individuals with intellectual and developmental disabilities and co-occurring mental health needs. Our community of certified professionals, accredited programs, and dedicated members is growing every day.

Join a Community Dedicated to Excellence