Atherectomies and other procedures on Kelly Hanna’s veins and arteries began in February 2019.

His records do not always show which vessels Dr. Mustapha performed the procedures on, they only indicate which leg.

That August, Ms. Hanna’s right toe had to be amputated.

Just over a year after the first procedure, he had undergone more than a dozen.

When he went to the hospital in July 2020, his right foot was purple and cold to the touch. A vascular surgeon at the hospital, Dr. Judith Lin, said in an interview that she had no choice but to amputate above the knee.