All patients already referred to or being followed by nephrologists were excluded. Inclusion criteria were all patients in the Internal Medicine clinic at NMCSD who were sent to the lab to obtain routine chemistry panels for follow up by their primary care providers. The primary outcome is increased referral to nephrology in accordance with NKF K/DOQI guidelines if GFR values are reported on routine chemistry panels. Key secondary outcomes are Primary Care Provider knowledge of NKF K/DOQI guidelines, specifically when patients with chronic kidney disease need to be referred to a nephrologist for further evaluation.