Our mission is to provide patient-centered care for allergies and asthma.

California

Patty Chi, MD FACAAI

Patty Chi, MD FACAAI

Patty Chi, MD, is a board-certified allergist and internal medicine physician who practices at Columbia Asthma & Allergy Clinic in San Mateo, California. Dr. Chi earned her undergraduate degree in biochemistry at Brown University in Providence, Rhode Island, and...

Renu Gandhe MD, FACAAI

Renu Gandhe MD, FACAAI

Renu Gandhe, MD, is a board-certified allergy, immunology, and asthma specialist at Columbia Asthma & Allergy Clinic in Fremont and Sunnyvale, California. Dr. Gandhe was born and raised in India. She completed her medical degree at the highly-regarded Government...

Umesh Sab MD, FACAAI, RhMSUS

Umesh Sab MD, FACAAI, RhMSUS

Dr. Sab did his allergy and rheumatology training at Scripps Clinic and Research Foundation, La Jolla, University of California San Diego and UCLA. Dr. Sab is board certified in Internal Medicine, Allergy and Immunology and Rheumatology. He is a Fellow of American...

Ravdeep Kaur, MD, FACAAI

Ravdeep Kaur, MD, FACAAI

Dr. Ravdeep Kaur, MD is an allergist providing care at Columbia Asthma and Allergy Clinic in Oakland, California. She was raised in the Bay Area and attended West Virginia University School of Medicine for her medical training. She then completed her Internal Medicine...

Yan Yan MD, FACAAI

Yan Yan MD, FACAAI

Yan Yan, MD, is a board-certified allergist and pediatrician providing dedicated care to her patients at Columbia Asthma & Allergy Clinic in Fremont and Redwood City, California. Dr. Yan, who was born and raised in China, attended Nanjing University of Chinese...

Michael LeNoir MD, FACAAI

Michael LeNoir MD, FACAAI

Michael LeNoir M.D. is an allergist and pediatrician who has practiced pediatrics and clinical allergy full time for over 30 years. He is a graduate with honors from the University of Texas and an MD degree from the University of Texas in Galveston. After residency in...

Melissa Hutton PA

Melissa Hutton PA

Melissa Hutton is an NCCPA nationally certified Physician Assistant, licensed in both California and Florida. Melissa received her undergraduate degree in Biology from Florida Gulf Coast University, in Fort Myers, Florida. She received her M.M.S in Physician Assistant...

Do You Suffer From Allergies?

Don’t let allergies run your life. Talk to a Columbia Allergy clinic today to find relief.

Monica H.
“First time at allergy specialist they really care about my kids lifestyle they care more about their patients that their wallet. Now days that's a keeper. ”
David W.
“Adam and the staff were great at considering my concerns, explaining my results and listening to my questions. Plus everyone was on time and things moved swiftly. ”
Prashant S.
“Absolutely exceptional. The doctor, team and facilities are the best you could ask for. We have never felt more comfortable and safe. With the approach we have taken with our son and has made the whole process so much easier. You guys makes difference in people’s lives”
Noah J.
“Nothing worse than worrying about every cookie and ice cream snack out there that sends us to the ER. Dr.Jain and Dr. Gandhe who are the best. Their expertise and kindness have given us back both dessert and peace of mind. I don't know which one is more appreciated. ”
Hana L.
"Dr.Gandhe always puts my son at ease before treatment. She talks to him directly and in an age appropriate way. My son looks forward to visiting her and the other staff. When I have questions about treatment she responds clearly and, during after hours, Dr. Gandhe responds very quickly. We feel well cared for."
Amy M.
"Dr. Gandhe gives us excellent personalized treatment for my son’s peanut and tree nut allergy. She has a heart for kids with allergies and I feel very safe under her care. My son has already made great progress with his tree nut allergy"
Nikko Y.
"Best Office Ever!"
Georgia B.
"One of the best doctors + staff I have ever met. The care and professionalism is out of this world! We feel comforted and safe at our visit "
Pierre
"Dr. Jain is very kind and friendly as well as the staff "
Graciela R.
"Dr.Jain and Melissa Hutton PA-C are the best allergy providers I have ever had the pleasure of meeting. The entire staff is kind and helpful. My allergy care is comprehensive and I never feel rushed through an appointment-"
Miko
"Best decision we have made in my son’s life so far"
Merritt F.
"We are very confident with Dr. Jain’s treatment plans and recommendations. The staff at the Fremont office is amazing"
Cherylyn V.
"Amazing and awesome team for scary and life-threatening allergies"
Manalie J.
"Dr.Gandhe is very patient, explains everything in great detail and answered all of our questions. It helped to ease out our Anxiety about OIT"
Walter M.
"Dr. Gandhe is great, thoughtful, and a caring provider. All staff is fantastic as well!"
Sarah S.
"We are likely (5 stars) to recommend Dr. Jain to friends and family. Our experience here has been so positive and supportive. It is great clinic and has given us great hopes in treating our son"
Khushi P.
"Extremely great experience. Truly God sent figures. Dr. Jain and Melissa are such wonderful and humble doctors, I have ever met. Thank You. Dr Jain and the entire staff for being with us through the journey. I will recommend him to all the people that I know with allergies
Amrita M.
"Dr. Gandhe has been more than a blessing for us. We love her! She’s so great at talking explaining and planning everything. Her treatment has been spot on and I am so thankful we found you. We love all the nurses, they are so patient and loving"
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