California Sinus Centers Providers

Karen J. Fong, MD

Dr. Fong is a board certified otolaryngologist, specializing in rhinology, who emphasizes comprehensive, multi-disciplinary sinus care and patient education in her practice.  She joined Cal Sinus in 2007 from Portland, Oregon, where she was formerly on the faculty of Oregon Health and Science University. Dr. Fong sees patients at our locations in Walnut Creek and Pleasanton.

Winston C. Vaughan, MD

Winston C. Vaughan, M.D.

Dr. Vaughan’s Clinic Locations:

Dr. Vaughan is a board certified, fellowship trained rhinologist who is committed to providing advanced sinus care in a caring and compassionate environment to his patients. He founded Cal Sinus in 2005 having previously served as the Director of the Stanford Sinus Center from 1998-2005. Dr. Vaughan sees patients at our Atherton, Fresno, Sacramento, Sonoma and Walnut Creek locations.

Kathleen Low, NP

Kathleen Low, NP is one of the first nurse practitioners in the Bay Area to focus on ENT and sinus disorders. She combines extensive experience with a dedication to longitudinal care and patient education in her practice. She joined Cal Sinus in 2005 from the Stanford Sinus Center. Kathleen sees patients at our Atherton location. 

Dorothy Yip, PA-C

Dorothy Yip, PA-C

Dorothy’s Clinic Locations:

Dorothy Yip, PA-C, received her B.S. in Psychobiology at UC Davis and completed her Masters in Physician Assistant Studies at Western University of Health Sciences in Southern California. She is a board-certified Physician Assistant at both national and state level.