Lord Dhanvantari is the divine physician and avatar of Lord Vishnu. He emerged from the ocean during the Samudra Manthan (churning of the cosmic ocean) holding the pot of Amrita (nectar of immortality).
He is the founder of Ayurveda, the ancient Indian system of medicine. His blessings are sought for health, healing, and medical success.
Note: While Dhanvantari is worshipped for health blessings, this is a devotional practice and not a substitute for medical treatment.