It used to be my old translator and tibetan language and buddhism teacher that would hold the medicine buddha puja weekly but he is away, last I heard of him. So hte boss of his temple , a very old man, recites the mantra for an hour , meditates in silence and offers blessings. It is a good practice of patience because it is mantra recitation. When it was my teacher, he would do not only mantra but the whole puja as such. Not anymore. I dont mind because I dont speak tibetan anyway. So at least, a mantra I can participae in by reciting it and praying that way with old man.