Graybill Medical Group Gynecology, Obstetrics, Pediatrics, Internal Medicine, Family Practice is their Medial specialty. Graybill Medical Group is located on 1035 S Main Ave in Fallbrook. They can be reached by phone by calling (760) 728-2777 . Their hours of operation are 7 days a week Closed and they can be reached by calling (760) 728-2777 . They have a total of 2 reviews, 2 positive reviews and 0 negative reviews.