FLT CREW OF A319 EXPERIENCED MODERATE TURB DURING A CLB E OF SMF. 3 FLT ATTENDANTS AND 2 PAX REQUESTED MEDICAL ASSISTANCE ON ARR AT DEST.

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I WAS THE CAPT ON FLT FROM SMF TO LAS. APPROX 50-60 MI E OF SMF; CLBING THROUGH FL210; WE ASKED FOR AND RECEIVED PERMISSION FROM ATC TO DEVIATE R OFF COURSE TO AVOID SOME CLOUDS. WHILE STILL IN CLR VMC CONDITIONS; WE ENCOUNTERED MODERATE TURB THAT LASTED 3-5 SECONDS. RIGHT AFTER THE ENCOUNTER I CALLED THE FLT ATTENDANTS TO CHK ON THEIR CONDITION AND THAT OF THE PAX. THE LEAD FLT ATTENDANT SAID THAT ALL 3 FLT ATTENDANTS HAD BEEN THROWN TO THE FLOOR AND THAT A BEVERAGE CART HAD BEEN KNOCKED OVER. SHE SAID THAT SHE THOUGHT THAT EVERYONE WAS ALL RIGHT. ABOUT 10 MINS LATER; THE LEAD FLT ATTENDANT CAME ONTO THE FLT DECK AND ASKED THAT ALL 3 FLT ATTENDANTS BE REPLACED FOR THE REMAINDER OF THEIR TRIP WHEN WE GOT TO LAS. ABOUT 15 MINS LATER; SHE AGAIN CALLED THE FLT DECK AND ASKED THAT THE PARAMEDICS MEET THE FLT IN LAS TO CHK THE CONDITION OF THE FLT ATTENDANTS AND A COUPLE OF THE PAX. THE 3 FLT ATTENDANTS WERE MET BY AND EXAMINED BY THE PARAMEDICS AND TAKEN TO A HOSPITAL IN LAS VEGAS FOR FURTHER OBSERVATION. AT THE TIME OF THE TURB ENCOUNTER; THE WX RADAR WAS IN USE AND THE SEAT BELT SIGN WAS ON.