A doctor is on-call 24 hours a day, seven days a week. For after hours emergencies please call the office at 510-794-6633 and listen for the phone number of the physician on-call. NOTE: If you are experiencing nausea, vomiting, fevers, chills, shortness of breath and are unable to reach someone, please call your primary care physician, or other healthcare provider. In the case of an emergency call 911 or go to the nearest emergency room.