Email received from:  michal.simms@christushealth.org  Sub : Enrollment Query - CBUC & GWMC - Christus Spohn  Hello Ahmed,     Because we have Beeville Medical Clinic on an Ancillary Agreement, the clinic is the participating provider.  We do not credential those providers that work in the clinic as long as they bill for services with the Clinic’s TIN and NPI.   Eff date : 04/01/2018  Please let me know if you have questions.     Thanks, Michal   Another Email:   Hello Ahmed,     Thank you for sending the prospective provider form and W9.     Since Coastal Bend Urgent Care is contracted with CHRISTUS Health under an Ancillary Agreement, the participating provider is Coastal Bend Urgent Care, not the individual practitioners.  We do not credential individual providers under an ancillary agreement.  Claims should be submitted group to group and not with an individual’s NPI.     Let me know if you need other information.     Thanks, Michal  Please see the attachment