Many of the referrals i give are for home insurance policies since I am a mortgage lender.  When I refer a client I usually follow up with the team member first and I share the pink slip with my mortgage processing team so they can follow up with the client I referred since they are usually in a constant dialogue with that client.  I follow up with team member and my operations team follows up with the end client to make sure we have home insurance coverage in a timely manner.  

If it is another referral I will call my end client because I feel responsible for making sure the connection is solidly made.