PP participates in government healthcare programs just like any other medical provider.  Yes, they benefit in that sense, but only in the same way that other organizations like crisis pregnancy centers also benefit.  I suppose he might declare a conflict on a bill that benefited PP by name, but I don't see any legislation to that effect.  If you disagree with Sen. Manning, feel free to vote against him or even run against him, but he does not have a conflict of interest by pursuing his political beliefs through more than one avenue of community service.