While I found the treatment effective during the first year and appreciated Dr. Zhang's nice…read moredemeanor, I experienced several ongoing concerns with the overall office operations. My main issue is that this office has always felt like a money-grab. The office often recommended additional tests and appointments that did not seem necessary. Although I understand the value of Ni-Ox and lung function assessments, the repeated testing rarely resulted in meaningful adjustments to my treatment plan. Appointments frequently ended with vague feedback rather than clear next steps for improvement. During one visit, I had a reaction to the shots, which was a stressful situation. The staff appeared uncertain about how to respond, and Dr. Zhang invited a medical assistant to observe my hives without asking for my consent. This was uncomfortable and dehumanizing. Additionally, I received the bill for this appointment and they charged me for a lung function test I did not take. I contacted the billing department who said they would call me back. I never received a call back despite following up. I check today to see they have revised their billing statement to deduct that charge. Very shady business that prioritizes money over patient care. I am now seeing a new allergist who looked at my tests and said that allergists should not be administering shots to people with numbers as bad as mine were.

Dr. Zhang at South Bay Allergy & Asthma is a wonderful and very caring doctor. She is fantastic…read morewith kids - friendly, patient, and able to put them at ease right away. She listens carefully to parents' concerns and never makes us feel rushed. We truly appreciate her thoughtful approach and highly recommend her to any family looking for excellent allergy and asthma care.

I had an extremely frustrating experience with South Bay Allergy & Asthma Group. I scheduled what I…read morebelieved would be a straightforward appointment and was never informed about the cost of the visit or any additional testing beforehand. Weeks later, I received a bill for 1,400 for a simple allergy panel. (they billed my insurance $2500) The most frustrating part is that there was absolutely no transparency. If patients are going to be charged hundreds or thousands dollars for testing, consultations, or separate services, that should be explained clearly before anything is done -- not after the fact when the bill shows up unexpectedly. When I reached out about the charges, I felt like I got very little empathy or accountability; Even at one point being told I didn't know how to read bills. Medical offices should understand that people budget for healthcare and deserve to know what they're agreeing to financially before being treated. The billing process completely ruined the experience for me. I would strongly encourage anyone go to a more forthright office. I NEVER WANTED FREE SERVICE, I WANTED HONEST SERVICE, unfortunately I didn't receive that here. I have also submitted a few complaints to the medical board. I've attached my bill to this review.

I've been a patient here for allergy testing and had a good experience with the actual medical…read moreteam including the nurse practitioner who is knowledgable and the patch testing process itself went smoothly. However, when I tried to schedule a simple Telehealth follow-up to review my results, I was told I'd need to pay $240 cash upfront and then wait for insurance reimbursement. When I pushed back pointing out they're in-network with my insurance plan and asking why they couldn't bill insurance directly, the story changed. First I was told "health plans no longer cover Telehealth visits starting January 1, 2026". I called my insurance company directly, and they confirmed my plan covers Telehealth with no deductible. When I shared this with the office, the explanations for why I couldn't have a simple video call to review results I already received. I ended up canceling altogether. The medical care was fine, but the billing runaround and inconsistent answers made me lose trust in the office. I'd recommend clarifying their Telehealth and billing policies upfront before committing to any treatment plan here.

Dr. Tam and his office are the best ! He is not just in it for allergies like other immunologists…read morein our area, he is a fantastic immunologist. He keeps my son alive and healthy . He explains everything and his staff has always been kind and helpful. We are more than grateful for his thoughtful care.

I'm very appreciative that we have an expert allergist in Marin County. He and his staff are…read moremeticulous with their care. They are a very busy practice in a small space and do everything they can to make sure you receive safe care. Thank you to them all.

Outstanding physician. I've seen many rheumatologists in different cities and states, several in…read moreSan Francisco. Only one I've been under the care of (in Los Angeles) is her peer in knowledge and clinical skills. Not surprisingly he knows Dr. Carteron. Dr. Carteron is truly interested in her patients as people and takes as much time with her patients as required. Consequently, one might have to wait a while in her waiting room (well-stocked with interesting magazines and medical books). Dr. Carteron has an excellent referral network of specialist physicians.. She also has the nicest, most organized administrative assistant, James, of any doctor I've seen in San Francisco.

Dr. Carteron may be a good physician but her insurance acceptance is from the Dark Ages…read more I called earlier this week as she was recommended and got an email from her assistant that I would have to agree to certain terms and payment plans and return that email agreeing to pay in cash because she only takes Medicare. Everyone else has to put up a minimum of $700 cash just to see her and then good luck getting anything back from your insurance company. Plus that's just the first appointment --- it goes on and on if you want to see her again She may be good but is obviously only interested in the money $$$ and not the patient.