Require a contract that stipulates the relationship between our Health Insurance TPA and Providers that wish to join our network.

I am looking for a Partnership Agreement contract to adequately stipulate the relationship between our Health Insurance TPA and Providers that wish to join our network. The contract must include certain clauses related to payment terms, as per our specifications. The contract must be ready ASAP, so we require a freelancer who can complete the project on time, with the utmost professionalism and detail.