Any health insurer, including a group health plan, as defined in 29 U.S.C. §1167, Section 607(1) of the Employee Retirement Income Security Act of 1974, health maintenance organization as defined in article twenty-five-a of this chapter or hospital and medical service corporations as defined in article twenty-four of this chapter is prohibited from considering the availability or eligibility for medical assistance in this or any other state under 42 U.S.C. §1396a, Section 1902 of the Social Security Act herein referred to as Medicaid, when considering eligibility for coverage or making payments under its plan for eligible enrollees, subscribers, policyholders or certificateholders.