Attending physician. The physician who has the primary responsibility for the medical diagnosis and treatment of the patient. A consultant or an assistant surgeon, for example, would not be an attending physician. Under very extraordinary circumstances, because of the presence of complex, serious, and multiple, but unrelated, medical conditions, a patient may have more than one attending physician concurrently rendering medical treatment during a single period of time. An attending physician also may be a teaching physician.
32 CFR § 199.2
General. In an effort to be as specific as possible as to the word and intent of CHAMPUS, the following definitions have been developed. While many of the definitions are general and some assign meaning to relatively common terms within the health insurance environment, others are applicable only to CHAMPUS; however, they all appear in this part solely for the purpose of the Program. Except when otherwise specified, the definitions in this section apply generally throughout this part.