Physician with ownership in Dialysis Center

I know many of you must have run into this.

You have a physician client who's practice sponsors a qualified plan. One problem though. The physician has a 10% interest in a Dialysis Center. Oh yes, and he is a Kidney specialist. ASG? Certainly seems like one. They would not want to consider an additional 15 employees for their plan. However, there is doubt (in this case) that his office together with the Dialysis Center provides services for the public. Even though he refers some of his patients there, he also refers some to the other center in town of which he has no ownership interest.

Has anyone run into this type of sticky situation? 

Thanks.

I don't see an A-org relationship, but you would have to look at the revenue thresholds for a B-org affiliation; and make sure you look at it from both directions: with the Dialysis Center as the FSO; and then compare with the Physician practice as the FSO.  Also, ask the physician to explain where dialysis services have historically been performed, I always view that as a hospital, or specialty setting, due to the previous expense of the machines themselves.