American Association of Diabetes Educators   
American Association of Kidney Patients  
American Diabetes Association  
American Dietetic Association
American Heart Association
American Kidney Fund   
Baxter Home Therapies  
Fresenius Medical Care Diet and Lifestyle Tips   
IgAN Nephropathy Support Network
(information on "Berger's Disease")   
International Society for Peritoneal Dialysis  
National Kidney Foundation  
NIDDK Health Information: Kidney Diseases
(The government's site on kidney and related disease)  
Polycystic Kidney Disease (PKD) Foundation  
Renal Physicians Association/Renal Education Foundation
UpToDate for Patients