The practice was established at its current location in 1974. As the oldest and leading ENT practice in Marin County, we have a proven track record of providing exceptional ENT services to our patients, hospital, and the community at large. Founded by one of its original members, Arthur C. Fenn, M.D. (now retired), he was joined by Romeo C. Agbayani, Jr, M.D. in 1998, who developed Marin ENT into its current form.

At Marin ENT, we're proud to treat a wide variety of ear, nose and throat conditions such as: Pediatric ENT; Ears & Hearing; Nose, Sinus & Allergies; Throat & Mouth; Facial Plastics & Reconstruction; Salivary Glands; Cancers & Tumors; Thyroid and Parathyroid; Sleep Apnea & Snoring; and many, many more.

Our philosophy is to be the center of excellence for ENT services in Marin County. We recognize that there are excellent otolaryngology—head & neck surgeons throughout the Bay Area; however, we believe that patients should be able to receive the same level of outstanding and comprehensive ENT care in their own community. We are dedicated to continuously improve the quality of care that we may provide by introducing and utilizing state-of-the-art minimally invasive techniques, expanding our scope of subspecialty practice, and building relationships with our patients.