On or before December 31 in each year, the secretary of health and environment, shall prepare a list of the areas of this state which the secretary determines to be medically underserved areas. In preparing such a list, the portion of time of persons engaged in the practice of medicine and surgery at any institution under the jurisdiction and control of the secretary for aging and disability services shall not be included in determining whether an area is medically underserved. Every such list shall note that all state medical care facilities or institutions qualify for such service commitments, in addition to listing those areas determined to be medically underserved. Medically underserved areas established prior to the effective date of this act by the chancellor of the university of Kansas, or the designee of the chancellor, shall continue in effect until changed by the secretary of health and environment.