A health service provider psychologist shall meet the following criteria of training and experience:

(1) The psychologist must be currently licensed by the State Board of Examiners of Psychologists;

(2) The psychologist must be eligible to be listed in the National Register of Health Service Providers of Psychology or have completed not less than two years, with 1,500 hours each year, of supervised experience in health service of which at least one year is post doctoral and one year, which may be the post doctoral year, is in an organized health service training program;

(3) A substantial portion of the supervised experience must be in an inpatient setting; and

(4) Two supportive letters of recommendation from health service providers in psychology who are familiar with the applicant's work must be submitted to the medical facility or institution.