Mine is Dr. Les Thomas but his NP Wanda is simply the best. In the many years of dealing with CKD, she is extremely knowledgeable like bringing up to me that the lab test for kidney function is more accurate with Cystatin C than eGFR. I researched that fact and she is exactly right. We talk so much on this forum of eGFR, but lab estimates of GFR can fluctuate from one lab to another. Just love my Mayo family of docs.