One verse

Srimad Bhagavatam 8.8.34

8.8.34

स वै भगवत: साक्षाद्विष्णोरंशांशसम्भव: । धन्वन्तरिरिति ख्यात आयुर्वेदद‍ृगिज्यभाक् ॥ ३४ ॥

sa vai bhagavatah saksad visnor amsamsa-sambhavah dhanvantarir iti khyata ayur-veda-drg ijya-bhak

sah
he
vai
indeed
bhagavatah
of the Supreme Personality of Godhead
saksat
directly
visnoh
of Lord Visnu
amsa-amsa-sambhavah
incarnation of the plenary portion of a plenary portion
dhanvantarih
Dhanvantari
iti
thus
khyatah
celebrated
ayuh-veda-drk
fully conversant in the medical science
ijya-bhak
one of the demigods eligible to share the benefits of sacrifices.

This person was Dhanvantari, a plenary portion of a plenary portion of Lord Visnu. He was very conversant with the science of medicine, and as one of the demigods he was permitted to take a share in sacrifices.