Who we are

Keystone Alliance is a family of nonprofits that all share a powerful mission, to empower individuals with intellectual and developmental disabilities to live, work, recreate, and participate fully in their community.  This mission is at the heart of everything we strive to accomplish. It is the yardstick by which we measure success. We believe that nonprofits can achieve better outcomes for the people they serve through collaboration and partnership. 

Our member organizations serve more than 1,400 adults and children with intellectual and developmental disabilities annually throughout the Chicagoland area.  Keystone supports this important work with highly flexible administrative and consultative services. We offer a comprehensive set of tools for nonprofits to grow mission impact, foster long-term mission sustainability and create innovative program models.

From Surviving to Thriving - A Keystone Alliance Presentation


This link leads to the machine-readable files that are made available in response to the Federal Transparency in Coverage Rule and includes negotiated service rates and out-of-network allowed amounts between health plans and healthcare providers. The machine-readable files are formatted to allow researchers, regulators, and application developers to access and analyze data more easily.


The Team

  • Greg Petersen

    Chief Executive Officer

    Greg Petersen was appointed Chief Executive Officer (CEO) of the Keystone Alliance in July 2020.  

    Previously, Greg served as Search's Director of Venture Development from 2004 - 2006 and became its Chief Administrative Officer in 2007.  Greg played a key role in Keystone Alliance’s launch, serving as its Chief Administrative Officer until 2017 when he joined Glenkirk as its CEO.  Since that time, Greg has overseen the opening of four new residences, completed Glenkirk’s long-term residential rebuilding initiative, continued the organization’s transition to smaller day services settings, and leveraged technology to improve individuals’ ability to connect with their communities.

    Greg’s service to Glenkirk, Search, and Keystone over the past two decades has given him a unique insight into the Illinois nonprofit environment. Together with his entire leadership team, Greg looks forward to continuing to support thriving nonprofit missions and communities across Illinois.
  • Linda Coleman

    Chief Financial Officer

    Linda Coleman attended the University of Illinois – Champaign Urbana where she received a Bachelors Degree in Business Administration and a Masters Degree in Accounting.  Linda has worked in the non-profit sector for more than 20 years, including serving as CFO of Boys and Girls Clubs of Chicago from 1993 - 2004. 

    In 2004, Linda was appointed CFO of Glenkirk, a non-profit disability services provider.  In 2009, Linda was appointed Chief Financial Officer of the Keystone Alliance.  In her position with Keystone Alliance, she serves as the CFO for Keystone’s four affiliate organizations, including Search, Inc.