The Department of Health and Environmental Control may establish charges for maintenance and medical care for all persons served in State health centers and other health facilities under the jurisdiction of the Department and by personnel of the Department and of the health units under its jurisdiction in homes and any other places where health services are needed. The terms "medical care" and "health services" include the services of physicians, dentists, optometrists, nurses, sanitarians, physical therapists, medical social workers, occupational therapists, health aides, speech therapists, X-ray technologists, dietitians, nutritionists, laboratory technicians, and other professional and subprofessional health workers. The charges, which may be adjusted from time to time, shall be reasonable and based on the total costs of the services rendered, including operating costs, depreciation costs, and all other elements of costs.