Our Mission


Here at SF Allergy, we understand that your allergies or immune problems can seriously impact your quality of life. Our physicians and staff are committed to providing comprehensive, state-of-the-art care to address all of these complaints. Whether you have allergic rhinitis, food allergies, eczema, immunodeficiency, or another concern, we strive to provide high-quality care for all your various needs.

Our exceptional care team consisting of Physicians, Medical Assistants, and Patient Care Coordinators, will always prioritize your care and are dedicated to building lasting relationships for years to come. We are committed to partnering with you, your family and your primary care provider to offer innovative and individualized care for your allergy, asthma and immunology health concerns. We strive to provide the best and most comprehensive in the SF Bay Area, and we pride ourselves on our responsiveness, professionalism, and reliability.

About Us


Our providers have significant experience in the fields of allergy, asthma, immunology, pediatrics, and otolaryngology. Please learn more by clicking and exploring their profiles.

Dr. Opal Gupta

Opal Gupta, MD

Dr. Opal Gupta is a pediatric allergist and immunologist in San Francisco, CA. Originally from Chicago, Illinois, Dr. Gupta joined San Francisco Otolaryngology Medical Group in December 2018.
Katherine Fast, MD

Katharine Fast, MD

Dr. Katharine Fast is board certified by the American Board of Internal Medicine. She is a member of the American Academy of Allergy, Asthma and Immunology, the American College of Physicians and the Federation of Clinical Immunology Societies.
James Piepergerdes, MD

James Piepergerdes, MD

Dr. James Piepergerdes is a board certified Otolaryngologist – Head and Neck Surgeon - who has worked with the San Francisco Otolaryngology Medical Group since 2011. Dr. Piepergerdes has been an ENT allergist for over thirty years, receiving his medical degree from the University of Colorado School of Medicine and completing his otolaryngology residency at the University of California, San Francisco. He is a fellow of the American Academy of Otolaryngologic Allergy and a member of the American Academy of Otolaryngology.