The Coastal Health Alliance began seeing patients last week at its new dental clinic in the Livery Stable building, in Point Reyes Station. The clinic sports a large reception room, four operatories, a panoramic 3-D imaging machine for X-rays, a bathroom and ample storage for supplies. A second dentist will be joining the current staff two days a week starting in June. The clinic is a major step up from the dental van the health alliance had been working out of since 2016. C.E.O. Steven Siegel says the nonprofit lans to sell the van once it makes repairs.