An entity which provides health services to a defined population on a prepaid basis and which has members who are entitled to insurance benefits under title XVIII of the Social Security Act [
42 U.S.C.
1395 et seq.] or to medical assistance under a State plan approved under title XIX of such Act [
42 U.S.C.
1396 et seq.] may be considered as a health maintenance organization for purposes of receiving assistance under this subchapter if—
An entity which provides health services to a defined population on a prepaid basis and which has members who are enrolled under the health benefits program authorized by chapter
89 of title
5, may be considered as a health maintenance organization for purposes of receiving assistance under this subchapter if with respect to its other members it provides health services in accordance with section
300e
(b) of this title and is organized and operated in the manner prescribed by section
300e
(c) of this title.