Please note that the most secure payment method is to send a written check to the office address. Other payment gateways are provided here, but please discuss with Dr. Hills before using them to be sure your privacy is adequately protected.
Then, click or tap the box you would like. The first reveals a link to payment in a new browser tab. The second allows you to enter a note and an amount right there, and process it in a modal dialog box.
The QR Codes revealed in the last two boxes lead you to those payment gateways via your phone.
You can explore any of these easily without making a payment.