Medicare's rhymes with:
americares, daycares, healthcare's, markair's, tenncare's, airfares, americares, armchairs, backstairs, bankshares, daycares, delaware's, fiduciares, forebears, healthcare's, housewares, legionnaire's, legionnaires, markair's, nightmares, software's, somewheres, tenncare's, thoroughfares, wheelchairs
Medicare's sounds like:
medgar's, metzger's, midcourse, montgoris