Welcome to California Sinus Centers

California Sinus Centers are the premier centers of excellence in Northern California for the care of patients with disorders of the nose and sinuses. At Cal Sinus we aim to provide the best possible care to our patients in a comfortable and compassionate environment. Our providers are highly experienced surgeons (over 3000 cases) and are fellowship-trained surgeons who are national and international leaders in the field of rhinology. Through efforts in clinical care, education and research we strive to improve your sinuses and overall health.

Advanced Sinus Care

California Sinus Centers specialize in the diagnosis and treatment of complex disorders of the nose and paranasal sinuses.


Our sinus experts are available at locations throughout Northern California’s San Francisco Bay Area and Peninsula.

Your Upcoming Visit

Be prepared for your upcoming appointment by accessing our patient information area

In Office Technology

At the California Sinus Centers we are committed to incorporating technology into our practice to provide the safest, most effective and accessible sinus care to you and your family members.

Meet Our Providers

Karen J. Fong, M.D.
Karen J. Fong, MD
Winston C. Vaughan, M.D.
Winston C. Vaughan, MD
Kathleen Low, NP
Kathleen Low, NP
Dorothy Yip, PA-C
Dorothy Yip, PA-C

What Our Patients Are Saying

5 Stars

Dec 2, 2021

I appreciate the terrific care and service provided by Dr. Vaughan and team. Dr. Vaughan's diagnostic process is brilliant, you see what he is seeing in real-time, an involvement that is educational and calming Dr. Vaughan is straightforward and engaging, besides being funny and a good guy. Felt like I was in expert hands. And his staff Jackie and Kathleen are terrific, going above and beyond to ensure medicine access that Medicare found complicated. Hope not to need surgery, but if I do, I am grateful to be in Dr. Vaughan's care.
5 Stars

Nov 20, 2021

I have found Dr. Vaughn and his entire staff to be extremely professional, helpful, and competent. Dr. Vaughn has provided a level of exemplary compassionate, timely, effective, and friendly treatment at each visit. His follow-up and attention have been flawless. I highly recommend Dr. Vaughn / California Sinus Centers.
5 Stars

Sep 24, 2021

I have been a patient of Dr. Winston Vaughan for over 4 years now. I have had sinus problems my entire life and have seen dozens of doctors during this time. Dr. Vaughan is the best of the best. He takes the time to listen to what is wrong with you and provides gentle, expert care using has vast amount of education and experience. You wont be disappointed.
5 Stars

Sep 24, 2021

Dr Vaughn is an amazing sinus specialist and we are so grateful to have found him. He is intelligent, sensitive, caring, and he listened to all of our concerns. Dr. Vaughn is the one-in-a-million doctor who everyone is looking for and wishes they could find. Do not hesitate to see him...he is the best!
5 Stars

Sep 24, 2021

Dr. Vaughan is literally a lifesaver. I’ve been a patient for 19 years. I went from having to see him monthly when I was at my worst to semi annually for the last 17 years. He is compassionate, knowledgeable and committed to his patients. I’ve referred several people over the years and they’ve all been extremely satisfied with Dr. Vaughan. He and his staff are the best...you are in great hands!!!
Previous Slide Previous Slide
Next Slide Next Slide
Play Slider Play Slider
Pause Slider Pause Slider

What’s New at California Sinus Centers

COVID-19 Office Protocols

We at CalSinus hope that you, your friends and your families are well. We are open to provide your CARE. To continue to protect the health of our patients and staff during this pandemic, we are taking aggressive precautions -so we can provide the Sinus/ ENT care that our community needs in the greater Bay…

California Sinus Centers Atherton Celebrates 10 Year Anniversary

April 1, 2019 marked the 10 year anniversary of the California Sinus Centers Atherton office! To celebrate this milestone, Dr. Vaughan treated his staff to a weekend getaway in Sonoma, California complete with hand made jewelry for each staff member. The team spent 3 wonderful days reflecting on the past 10 years, getting to the…