SB 9.17.4

kāśyasya kāśis tat-putro
 rāṣṭro dīrghatamaḥ-pitā
dhanvantarir dīrghatamasa
 āyur-veda-pravartakaḥ
yajña-bhug vāsudevāṁśaḥ
 smṛta-mātrārti-nāśanaḥ
Word for word: 
kāśyasya — of Kāśya; kāśiḥ — Kāśi; tat-putraḥ — his son; rāṣṭraḥ — Rāṣṭra; dīrghatamaḥ-pitā — he became the father of Dīrghatama; dhanvantariḥ — Dhanvantari; dīrghatamasaḥ — from Dīrghatama; āyuḥ-veda-pravartakaḥ — the inaugurator of medical science, Āyur Veda; yajña-bhuk — the enjoyer of the results of sacrifice; vāsudeva-aṁśaḥ — incarnation of Lord Vāsudeva; smṛta-mātra — if he is remembered; ārti-nāśanaḥ — it immediately vanquishes all kinds of disease.
Translation: 
The son of Kāśya was Kāśi, and his son was Rāṣṭra, the father of Dīrghatama. Dīrghatama had a son named Dhanvantari, who was the inaugurator of the medical science and an incarnation of Lord Vāsudeva, the enjoyer of the results of sacrifices. One who remembers the name of Dhanvantari can be released from all disease.