There are regular bus services that go past the surgery. Get off at the Cheddar Grove bus stop, turn left into Valley Road and the surgery is on the corner of Valley and Lewis Roads. This is a link to First Bus for the number 75 timetable.
http://www.firstgroup.com/ukbus/bristol_bath/journey_planning/timetables/index.php?operator=3&service=75&page=1&redirect=no