Association of Developmental Disabilities Providers

What Association of Developmental Disabilities Providers does

Association of Developmental Disabilities Providers (ADDP) is a Massachusetts-based, private non-profit membership trade association founded in 1980 (as the Mental Retardation Providers Council, renamed ADDP in 1996) and currently operating from Framingham, MA. ADDP represents more than 130 community-based human service provider organizations that collectively employ nearly 26,000 staff across 350+ Massachusetts towns and deliver residential, day habilitation, community-based day supports, supported employment, shared living, and adult foster care services to individuals with intellectual and developmental disabilities (IDD), autism, and brain injuries.

ADDP does not develop or sell technology products. Its core offering is organizational membership and the associated advocacy, education, and convening services. Revenue is generated through recurring Provider Membership dues and Business Membership dues (the latter providing for-profit vendors with access to member contact lists, conference exhibiting discounts, and Lunch and Learn webinar opportunities). The association supplements dues revenue through its annual LEAD! Conference & EXPO, which in 2026 drew 500+ attendees and 39 exhibitors, and through partnerships such as the talent acquisition services arrangement with DeCava.

ADDP operates with a small internal staff of 1-10 employees under President & CEO Stephanie Costa, supported by a 25-member Board of Directors and a network of issue-driven committees. The association maintains established working relationships with the Massachusetts Department of Developmental Services (DDS), MassHealth, EOHHS, The Arc of Massachusetts, and the Brain Injury Association of Massachusetts, and partners with ANCOR for federal Medicaid advocacy. ADDP publishes an annual workforce survey (the September 2025 edition covered 77% of member providers) and conducts weekly membership meetings, monthly committee meetings, legislative luncheons at the State House, and state budget advocacy campaigns on behalf of members.

Name

Association of Developmental Disabilities Providers

Legal name

Association of Developmental Disabilities Providers

Website

https://addp.org

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

1–10 employees

Short description

ADDP is a Massachusetts-based non-profit membership trade association representing 130+ community human service providers that deliver residential and day services to individuals with intellectual and developmental disabilities, autism, and brain injuries across 350+ towns. It provides advocacy, education, and convening services funded through membership dues and an annual conference.

Ownership category

akta.pro rank

Headquarters

HQ city

Framingham

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Others

Revenue model

1. Provider Membership Dues: ADDP generates revenue through membership dues from provider organizations. Provider members receive benefits including advocacy representation, weekly updates from state agencies, contact with decision-makers, legislative leadership access, effective advocacy on their behalf, professional development workshops, best practices forums, and discounted rates for ADDP's Annual Conference & EXPO.
2. Business Membership Dues: ADDP generates additional revenue through business membership programs. Business members receive contact lists of organization members, opportunities to meet with executive directors, financial officers, HR officers and staff, significant discounts on exhibiting and advertising at the Annual Conference & EXPO, visibility to 800+ individuals, and 30-minute Lunch and Learn webinar opportunities.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels11 records

Core offering

ADDP is a statewide membership-based trade association representing more than 130 community-based human service provider organizations that deliver residential, day habilitation, employment, and community services to individuals with intellectual and developmental disabilities (IDD), autism, and brain injuries across Massachusetts. The association delivers advocacy representation to state and legislative bodies, weekly agency updates, professional development workshops, an annual LEAD! Conference & EXPO, workforce surveys, and committee-based collaboration to its provider and business members.

Product overview

ADDP is a statewide membership association representing over 130 community-based human service provider organizations that serve individuals with intellectual and developmental disabilities (IDD), autism, and brain injuries in Massachusetts. ADDP does not offer a unified software product or platform; instead, it provides organizational membership services including advocacy representation, workforce development programs, professional development events (such as the annual LEAD! Conference), workforce surveys and research, committee-based collaboration, and informational resources. Member organizations access benefits such as legislative advocacy, networking opportunities, professional development workshops, and business membership programs.

Differentiator

Problem solved

Functional benefit

Products and services

• Provider Membership Program

Quantifiable outcome

• The overall staff vacancy rate decreased from 19% in 2024 to 15% in 2025, marking the third consecutive year of gradual improvement
• +3 more outcomes

Named customers20 records

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered core, flagship and minor.

• DeCava (JoAnn Cavallaro)coreStrategic or Co-development PartnerADDP has partnered with JoAnn Cavallaro, founder and president of DeCava, an executive advisory and consulting firm, to offer ADDP members professional talent acquisition services. JoAnn focuses on talent acquisition at mid to executive level positions (Director, Sr. Director, VP, SVP, and C suite) at negotiated fees below executive search market rates. She also advises ADDP staff on leadership and management matters and coaches senior leaders.
• ANCOR (American Network of Community Options and Resources)flagshipStrategic or Co-development PartnerADDP maintains a partnership with ANCOR for federal relations and Medicaid advocacy. ANCOR Federal Relations Manager Noah Block provided an in-depth briefing on the federal Medicaid landscape and implications for community providers at ADDP's Annual Membership Meeting.
• Ball Consulting GroupminorGTM or Marketing PartnerBall Consulting Group issued press releases on behalf of ADDP including the workforce survey findings (November 2025), board appointments (October 2025), and annual meeting announcements (October 2025).
• Seven Hills FoundationminorGTM or Marketing PartnerSeven Hills Foundation sponsored the LEAD! Scholarship Awards at ADDP's 2026 conference.

Scale indicators8 records

Recent moves3 records

Expansion highlights5 records

Direct peers

• AAIDD (American Association on Intellectual and Developmental Disabilities): Professional association for the IDD field, focused on research, practice, and policy. Direct peer: ADDP's professional development and convening role for IDD providers overlaps with AAIDD's professional membership and educational mission.
• ANCOR (American Network of Community Options and Resources): National trade association representing community-based disability service providers. Direct peer: ADDP maintains an active federal advocacy partnership with ANCOR, and both organizations represent overlapping constituencies of community-based IDD/autism providers.
• The Arc of Massachusetts: Massachusetts statewide advocacy organization for individuals with intellectual and developmental disabilities. Direct peer in the MA IDD ecosystem: ADDP has a documented working relationship with The Arc of Massachusetts and both organizations co-engage on IDD policy and advocacy.
• Council of Autism Service Providers (CASP): Trade association for autism service provider organizations nationally. Direct peer: ADDP represents many Massachusetts providers serving individuals with autism alongside IDD; both organizations represent provider-side interests in autism services policy and reimbursement.
• National Alliance for Direct Support Professionals (NADSP): National association advancing the workforce of direct support professionals serving people with IDD. Direct peer: ADDP's core workforce advocacy (vacancy rate reduction, professional development) maps directly onto NADSP's mission and constituency.

Regional players

• NYSARC (New York State Association for Community Living / NYSARC Inc.): New York state-level association for community-based IDD service providers. Regional peer: comparable state-level trade association model serving IDD providers in a different state, with parallel advocacy, membership, and workforce development functions.
• Ohio Provider Resource Association (OPRA): Ohio state-level association representing providers serving individuals with developmental disabilities. Regional peer: mirrors ADDP's state-association structure and advocacy role for IDD providers in a different geography.
• PAR (Pennsylvania Advocacy and Resources for Autism and Intellectual Disability): Pennsylvania statewide association of providers serving individuals with autism and intellectual disability. Regional peer: comparable state-level provider association model with overlapping member service profiles and advocacy functions.

Others

• Council on Quality and Leadership (CQL): Accreditation and quality assurance organization for human service providers supporting people with IDD and behavioral health needs. Adjacent peer: CQL's accreditation and quality frameworks are used by ADDP's member providers, and both organizations operate in the same provider-quality ecosystem.
• National Association for State Directors of Developmental Disabilities Services (NASDDDS): Association of state IDD agency directors, representing the public payer/regulator side of the IDD system. Adjacent peer: NASDDDS sits on the government counterparty side of the same policy table where ADDP advocates, making it a closely coupled ecosystem participant rather than a direct competitor.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks1 record

Key highlights7 records

Customer concentration

• Xx.com/massaddp
• YouTubeaddp.org/rss/news
• Facebookfacebook.com/MassADDP
• LinkedInlinkedin.com/company/association-of-developmental-disabilities-providers

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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