(a) Authorization.--For the purpose of determining the suitability of the applicants and of the premises or for determining the adequacy of the care and treatment provided or the continuing conformity of the licensees to this act and to applicable local, State and Federal regulations, any authorized agent of the department may enter, visit and inspect the building, grounds, equipment and supplies of any health care facility licensed or requiring a license under this act and shall have full and free access to the records of the facility and to the patients and employees therein and their records, and shall have full opportunity to interview, inspect, and examine such patients and employees. Upon entering a health care facility the inspectors shall properly identify themselves to the individual on the premises then in charge of the facility.