no
he states that he was trained under dr. shook and others.
but he always prayered with his patients or for them and a few times a herbal formula popped into his mind and he would make it for them and if it was successful he used it again. examples:
the blood purifier formula
he asked harry hoxey and sitting bull and they both had a similar formula and both said the formula came to them on basically the same day it gave to dr. christopher.
his anti-plague formula
was given as a result of praying on stage at a seminar at the request of a man in the audience.
those are the 2 i remember the most.
otherwise many great herbal doctors were around from the civil war up to 1930.