Marcus [Bachmann] is a non-certified Christian therapist who operates a clinic called Bachmann & Associates, which has been accused of practicing "reparative" therapy to supposedly turn gay people straight. It's a practice that's been rejected by every major psychologial and psychiatric organization, but given Marcus Bachmann's assertions that gays need to be "educated" like "barbarians," that doesn't seem like a deal-breaker. Marcus has previously denied that the clinic is involved in "reparative" therapy while conceding that his clinic would, hypothetically, be open to that kind of thing, but only if a patient specifically asked to be cured.
I suppose if an adult of his or her own volition decides to spend money on a cure that doesn't work for a disease that doesn't exist, that's their own damn problem. But it doesn't make the so-called "therapist" any less of a despicable charlatan.
Few things inspire my contempt more than people using religion as an excuse for their own bigotry. But pseudoscience and fraud come in close behind.