With the reemphasis on 'transparency' in health care quality policy, more and more quality information about providers will be made available. The commercial value of provider data is also increasing. Providers enter into many contractual relationships where data about them may be in play, even if that is not the focus of the relationship. For example, a managed care contract, a practice management company relationship, obtaining an electronic medical record from a software vendor, or hiring a billing company are all relationships where significant provider data will be at issue. In "Commerce in Provider Data: What, Why and Provider Contractual Controls" Daniel Shay looks at what is proprietary to a provider, considers who is reporting data and why, and offering actual contract language as well as case law, addresses contractual protections providers should think about in entering into relationships with a range of other entities.