D.C. Mun. Regs. tit. 22, r. 22-B2019
Each hospital shall have a medical staff that shall be responsible for carrying out the provisions of the bylaws, consistent with rules and regulations, and shall recommend to the governing body bylaws, or amendments to the bylaws, as they deem appropriate to the operation of the particular hospital. The medical staff shall be organized in a manner and shall function in a manner consistent with the size, needs and resources of the hospital and of the medical staff.
The clinical staff of each medical service, surgical service, obstetric service, pediatric service, psychiatric service, radiology service, and anesthesiological service shall be organized under the directorship of an internist, surgeon, obstetrician, pediatrician, psychiatrist, radiologist, and anesthesiologist respectively, each of whom shall be responsible for the policies, procedures, and supervision of the medical work in his or her respective service. Likewise, any medical service shall be organized under the directorship of a licensed professional who is a medical specialist in that medical service.
The medical staff shall be responsible to the governing authority for the quality of medical care and treatment provided in the hospital and shall:
Each licensee shall require all employees, contract workers, and volunteers working in the hospital to familiarize themselves with the provisions of this chapter as appropriate to the functions they perform and with all other regulations applicable to their duties.
Each hospital shall provide a medical staff that shall be adequate for the diagnostic facilities and services, therapeutic facilities and services, and rehabilitation facilities and services which the hospital undertakes to provide.
D.C. Mun. Regs. tit. 22, r. 22-B2019