We do something like that now here in Colorado Springs with Alpenglow Family Medicine. A local Naturopathic Doctor (well trained, legit) here in town and I have an arrangement where I refer my direct care patients to her for really good natural medicine care, she gives them a per-visit discount. She then refers and consults with me on things more in my allopathic field, for which I give them a discount for max 2 visits. If they need more visits with me, they have to join us. If they wish to switch all care over to her, I'm fine with it. She and I definitely have different philosophies and approaches and sometimes dissagree, but we both respect one another and aim to keep the focus on what most benefits the patient. So far it is working. I think our patients like how when they set up with one of us, they kind of get both of us.