Should you or a loved one have a medical emergency, such as your child falling out of a tree, or your father-in-law experiencing sudden chest pains, you need an immediate plan of action. Jonathan W. Wheeler, M.D. provides after-hours on-call services to help when you need urgent care, and we are affiliated with St. Helena Hospital. No matter what the issue, we will diagnose it with professional expertise and treat it with the utmost urgency.