What is the test for deliberate indifference in a medical malpractice case?

violation. Id. at 836-37. It not enough that a reasonable person would have known of the risk or that a defendant should have known of the risk. Id. at 842. Rather, deliberate indifference is established only where the defendant subjectively "knows of and disregards an excessive risk to inmate health and safety." Toguchi v. Chung, 391 F.3d 1051, 1057 (9th Cir. 2004) (internal citation omitted) (emphasis added).