When Are We Available? The physicians at Palm Beach Diabetes & Endocrine Specialists (PBDES) are available for appointments from 8:00 a.m. until 4:45 p.m., Monday through Friday. To schedule an appointment, please call the office at (561) 513-5100 between the hours of 8:00 a.m. to 12:00 Noon and 1:00 p.m. to 4:45 p.m., Monday through Friday..