We have 3 convenient options for bill payment:
- You may send your payment by mail to our office.
- You may call our offices to pay your bill over the phone.
Atherton: 650-399-4630
Walnut Creek: 925-300-4680
There is no additional fee for making a payment over the phone.
You may also make your payment online by clicking the link below, please make sure to have your account information ready.
NOTE: Online bill pay will leave this site in a new browser window.
We accept Visa, MasterCard, and personal checks only.
Billing Frequently Asked Questions
Do you accept my insurance?
We are a preferred provider for Medicare and many of Northern California’s PPO healthcare plans. We are a member of very few HMOs. Patients that have Anthem Blue Cross through Covered California, Select Networks, Sutter, or Kaiser Plans are welcome to pay for their visits on a cash-pay basis.
Student Health Insurance plans often require prior authorizations. Please contact us to check if our services are covered by your insurance plan.
It is highly recommended that you contact your insurance carrier before making an appointment to ask about your:
- Copay for specialist office visit (new: 99203 or return: 99213)
- Deductible remaining and what that means to you concerning Procedures and copays.
- Copay for procedures like endoscopy (code = 31231) and sinus CT scan (code = 70486).
In the event we are not a member of your insurance plan, self-pay options are available.
Why does my bill say Bay Area Surgical Specialists, Inc. (BASS)?
BASS Medical Group is a multi-specialty practice management organization based out of Walnut Creek, CA. Cal Sinus is excited to join BASS’ team of highly skilled physicians and look forward to expanding sinus care services throughout the Bay Area and Northern California in this partnership.
The Bass Billing Number is 925-329-6417
Please note that any clinic or surgical services provided prior to October 1, 2016 were billed under Sacramento ENT.
How can I pay my BASS bill for services provided after October 1, 2016?
Do you have questions about your bill? Let BASS Medical Group’s billing departments help you.
Call the appropriate billing department to help answer your specific billing question(s).
NOTE: Online billing questions will leave this site in a new browser window.
Who should I call with billing questions?
For any billing questions or concerns please contact our billing manager at 1-925-329-6417.