What doctors aided James Garfield after his shooting?

According to the website linked below entitled "Biography of James Garfield," Alexander Graham Bell, inventor of the telephone, tried unsuccessfully to find the bullet with an induction-balance electrical device which he had designed. Alexander Graham Bell was not a physician, of course. According to the website linked below entitled "History House: Garfield II: A Lengthy Demise," one of the doctors who treated Garfield was Dr. D. W. Bliss. Another was Dr. Robert Reyburn, and also Navy Surgeon General Wales and Dr. Frank H. Hamilton.