Columbia Asthma and Allergy Clinic - Allergists, Asthma Specialists, & Immunologists located in the Pacific Region
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Office Hours Update

Our Fremont office will be open Friday, July 3rd.
All of our other offices will be closed Friday, July 3rd in observance of Independence Day.

COVID-19 Updates

We are currently open for patient care and our primary concern is for patient and staff safety. Please click here for further details.

Understanding Covid-19

With Sanjeev Jain, MD, PhD

Meet Renu Gandhe, MD

Asthma Specialist located in the Pacific Region

Now Offering


You can now visit with our providers electronically from the comfort of your own home!

Columbia Asthma and Allergy Clinics Serving California, Oregon, Washington & Idaho

Columbia Asthma & Allergy Clinics have multiple clinic locations in the Pacific Region. Allergist Dr. Jain & team of allergy specialists offer asthma, food allergy, environmental & seasonal allergies testing, diagnostics & treatment. Book an appointment with an allergist near you. Call (888) 586-6155.

Columbia Asthma & Allergy Clinic is a leading asthma, immunology and allergy practice with 12 convenient locations across state lines in Fremont, Oakland, Redwood City, Sunnyvale, San Mateo, California; Clackamas and Gresham, Oregon; Bellevue, Fishers Landing, Longview, and Salmon Creek, Washington; and Eagle, Idaho.

Columbia Asthma & Allergy Clinic offers a varied and expansive range of diagnostics and treatments since each practitioner comes from a different specialty background. The staff of highly trained physicians, nurses, and medical assistants includes experts in allergies, immunology, pediatrics, and internal medicine.S

With such a wide scope of medical backgrounds, team members can take advantage of each other’s expertise and are always available to answer questions from patients as well as other physicians.

The practice’s Sanjeev Jain, MD, PhD, was the first doctor in the world to successfully desensitize patients from shrimp allergies, and his achievements don’t stand alone. The staff is comprised of some of the best physicians in the fields of allergy and asthma who have been pioneers in various training programs and innovative treatments.

Patients at Columbia Asthma & Allergy Clinic enjoy comprehensive care, where no issue is too specialized, and get the most out of each appointment. With multiple locations and a culturally diverse team offering their services in several languages, the staff at Columbia Asthma & Allergy Clinic looks forward to helping patients of all ages and backgrounds get relief from their asthma and allergic reactions.

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Patient Reviews & Feedback

Dr. Jain has a reputation for developing protocols to desensitize his patients to nearly everything. The staff is professional, friendly, and competent.

Jerome H.

Dr. Welch is down to earth and kind. He is also very knowledgeable about asthma and allergies. I also impressed with his knowledge about the medications available.

Karen F.

I can’t speak highly enough about the staff and care here! They made the stressful OIT process as enjoyable as possible with their friendly faces and genuine care.

Elise C.

Get Directions to Columbia Asthma and Allergy Clinic


“Our exceptional care team consisting of Physicians, Nurses, and Medical Assistants will always prioritize your care, and are dedicated to building lasting relationships for years to come. We value culturally competent care and strive to ensure that each patient comes out of every appointment feeling empowered, heard, and never rushed.”

“Dr. Jain was recently named "Patient Preferred Immunologist of the Year" for the state of California by the exclusive network of Patient Preferred Physicians & Practitioners! Congratulations, Dr. Jain!

After Hours/Urgent Care Phone Number: (206) 922-8811