Missouri Renal Medicine is the group practice of nephrologists Dr. Mark Ravenscraft, Dr. Robyn H. Jacobs, Dr. Bruce Lippmann and Dr. Brian R. Ringhofer. They provide care for patients with kidney disorders, including renal insufficiency, glomerulonephritis, polycystic kidney disease, hypertension, renal transplantation and dialysis support. A referral is required to schedule an appointment.