The commissioner of health may establish demonstration projects to allow health maintenance organizations to extend coverage to:
(a) individuals enrolled in Part A or Part B, or both, of the Medicare program, Title XVIII of the Social Security Act, United States Code, title 42, section 1395 et seq.;

(b) groups of fewer than 50 employees where each group is covered by a single group health policy;

(c) individuals who are not eligible for enrollment in any group health maintenance contracts; and

(d) low income population groups.