CommonWealth Purchasing Group, a membership-based organization, helps to facilitate cost-efficiency for community health centers as well as other community-based, nonprofit health and human services organizations. Supported entirely by vendor-paid administrative fees, CPG relies on a percentage of our members’ purchases, as clearly displayed in the Participation Agreement. As a result, our members never write us a check and you’ll never be required to participate. We don’t uphold minimum purchasing agreements and members are encouraged to utilize only the vendors who meet their specific needs. Naturally, all members are free to purchase materials outside any contract.