Janavallabha Das Wloka and the Ayurveda Health Promoter Training Group are singing the mantra Dhanvantari. You can find the lyrics to the mantra here:
Shankham Chakram Jalaukam
Sukshma-svachchhati-hridyam'shuka-parivilasan'-maulim Ambho-ja-netram /
Vande Dhanvantarim Tam
You can get to the online kirtan book. You can find more information about yoga here.