Here are some resources that may be useful to you:
National Research Network of the American Academy of Family PhysiciansThe AAFP's nation-wide practice-based research network
Federation of Practice Based Research Networks (FPBRN)
See what type of activities other PBRNs are doing
North American Primary Care Research Group (NAPCRG)
Learn about primary care research
New York State Academy of Family PhysiciansThe New York State Chapter of the American Academy of Family Physicians
Social Medicine PortalOver 100 links to social medicine and health activism resources
Bronx CREEDAECOM's initiative on health disparities and community partnerships