Gerald B. Appel (born 1947) is an American medical doctor and kidney researcher known both for his celebrity patients and for his scholarly work on the renal manifestations of systemic lupus erythematosus and other diseases of the glomeruli, the filters of the kidney.
At Columbia University he established the first center for glomerular diseases In the United States.
"[1] Appel gained widespread recognition during the early 2000s for his role in securing a kidney transplant for the professional basketball player Alonzo Mourning and for enabling Mourning to return to the court for an NBA championship.
[2] However, Appel had also treated numerous other celebrities, including a dying Charles Lindbergh in the mid-1970s and the late Chicago White Sox co-owner Eddie Einhorn at the time of that team's World Series victory in 2005.
[4] In addition to Appel's other achievements, he is an associate editor of the kidney disease section of Up To Date, a major online reference for nephrologists all over the world.