San Ramon, CA 94582 More Location Information >>> Contact Us. Phone: (925) 736-0110 Fax: (925) 736-0120 Patient Portal Access >>> Hours. Monday - Friday 9:00am - 5:00pm Closed for Lunch 12:30pm - 1:30pm Welcome. Whether you are one of our established patients or a new patient looking for an Obstetrician or Gynecologist to assist you with your ....