Srimad Bhagavatam Class by Bhanu Swami at ISKCON Juhu (video)
SB 8.8.34 — This person was Dhanvantari, a plenary portion of a plenary portion of Lord Viṣṇu. He was very conversant with the science of medicine, and as one of the demigods, he was permitted to take a share in sacrifices.
Watch it here: https://goo.gl/PVB8HH