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.