Medicare HMO Sanction Reform and Anti-Fraud and Abuse Act of 1991

[AI summary unavailable — showing source text] Medicare HMO Sanction Reform and Anti-Fraud and Abuse Act of 1991 - Amends title XVIII (Medicare) of the Social Security Act to authorize the Secretary of Health and Human Services to terminate the risk-sharing contract of, or impose intermediate sanctions (including civil money penalties and the suspension of the enrollment of individuals) against, any participating health maintenance organization (HMO) that: (1) is carrying out the contract in a manner inconsistent with efficient and effective administration; (2) is operating in a manner that is not in the best interests of covered individuals; or (3) does not meet other specified contract requirements. Sets forth requirements for investigation and compliance procedures for terminating a contract or imposing such sanctions. Requires written agreements between participating HMOs with risk-sharing contracts and entities providing peer review services with respect to services provided by HMOs. Requires the Secretary to develop a model of such an agreement. Requires the Comptroller General to conduct a study and report to specified congressional committees on compliance costs incurred by such HMOs with respect to entering into such a…