Equitable　access　to　efficient　medical　services　via　public　transport　has　always　been　one　of　the　most　important　issues　of　healthcare　in　urban　development.　To　accurately　measure　the　urban　public　transport　accessibility　to　medical　services　(PTAMS),　this　research　proposes　a　hybrid　assessment　method　based　on　multiple　public-transport　related　indicators,　including　time,　cost,　and　walking　rate,　which　considers　the　whole　process　of　residents＇　public　transport　travel.　The　presented　assessment　technique　is　then　applied　in　a　case　of　Xi＇an,　China.　Through　the　classification　of　medical　facilities　and　PTAMS　levels,　the　results　show　that:　(a)　PTAMS　value　of　3,080　residential　areas　in　Xi＇an　are　highly　consistent　with　the　standard　normal　distribution;　(b)　More　than　80%　of　residential　areas　can　obtain　high　PTAMS　when　considering　the　use　of　Class　1　(large-scale)　hospitals,　while　the　high　PTAMS　of　Class　2　(small-scale)　ones　can　only　cover　less　than　40%　residential　areas;　(c)　There　is　obvious　spatial　heterogeneity　in　the　distribution　of　PTAMS　in　Class　2　hospitals　and　a　serious　lack　of　medical　equity;　(d)　Among　large　hospitals,　the　private　ones　retain　higher　PTAMS　and　equitability,　making　themselves　best　choice　for　residents,　which　is　opposed　to　the　government＇s　purpose　of　establishing　public　hospitals;　(e)　PTAMS　of　most　residents　substantially　dropped　about　4%　during　the　morning　peak-hour.　However,　subway　protects　PTAMS　of　nearby　residents.　This　research　provides　references　and　suggestions　on　how　to　improve　residents＇　PTAMS　under　the　existing　public　transport　network　and　medical　facilities　layout.