This is the official online payment website for Dr. Singer. If you have any questions or issues with this payment website, please click on the support link below to send an email. If you have a question about your account with Dr. Singer, please call 425-644-1234 Monday thru Friday 8:00am – 5:00pm. Payments made via this website should be submitted at least 3 days before the due date to avoid late fees. Payments made on this site are for services already rendered; all requests for refunds will be reviewed for approval on a case by case basis within 30 days.