Wow. Extraordinary, unique and professional office. I've been everywhere, acuouncture, Ayurveda,…read morenaturopaths, and a fleet of MDs over the years and never found such a place that fit what my body needed so well. I highly recommend.

Stephen has moved his practice up to Sebastopol, plus he's taken over Bill Prange's Sebastopol…read morepractice. I've seen Stephen for 14 years, after seeing many other acupuncturists before. He did the most comprehensive intake exam I have ever had with a health practitioner. He caught things no other health practitioner had before (sub-clinical low thyroid, hormone imbalances). Stephen's treatments and herbal RX have been the most effective I've ever experienced; I felt and noticed improvements quickly, if not immediately. I've seen Stephen for: fertility challenges, ovarian cysts, migraines, blood sugar stabilization, seasonal and food allergies, stress, thyroid issues, and general fatigue. I've taken my children to see him as well (for colds, coughs, ear issues, and allergies) with great results Stephen is a tall step beyond most acupuncturists and herbalists. He is a gentle but powerful needle-er. He's a knowledgable herbalist. Stephen, in addition to the classic acupuncturist moves of checking your pulses and looking at your tongue, also uses muscle testing to assess your body (very cool). He can also order Western labs for you, which adds to his ability to access and treat you. He's a bit of a mad scientist, incredibly knowledgable and able to make connections between disparate health issues. Stephen dispenses sound and helpful nutritional recommendations (Watch out though: Ever wonder if dairy, sugar or wheat are causing your health to suffer? Stephen might just confirm your hunch.) He sells and vitamin supplements as well. Stephen is a kind man. You'll find him professional and friendly, a clear communicator and genuinely concerned about your health. I trust him to treat my whole family. I highly recommend him. His office (previously Bill Prange's office) is easily accessible on Hwy 116, five minutes East of Downtown Sebastopol. Really nice staff. Runs on time. A gifted massage therapist, Ed Lark (707/291-3010), operates out of the office too.

Dr. Posner is phenomenal…read more I broke three fingers in my left hand and I was about to go to surgery, when I remembered that ever since I was a child, metal earrings and any kind of jewelry would make me swell. Frantic, I called my primary physician to ask him to do a test. He recommended Dr. Posner as an allergist and refused to recommend anyone else. He said it was the best allergist around, and that's who they use for something this serious. For this, I am really grateful. Dr. Posner is by far the best allergist I have ever been to, and probably the best doctor I've ever met. For starters, he comes in with a warm smile, as if he's known you forever. He's easy to talk to, thorough, investigative, and efficient. He understood my time restraints and he drove in and opened up the entire office for me on a Saturday, just so he could check to see if I had a preliminary reaction to metal. I now understand why the office is always packed. I wouldn't trust anyone else with testing for allergies or investigating a medical problem.

Dr Caraballo cured my asthma attack that I had been in for months. She listens and acts correctly…read more Dr Caraballo is a very capable doctor. My experience was excellent.

Recently moved to Sonoma Valley. I have been fully allergy tested and have had 1 year of allergy…read moreshots by a board certified MD. My prior allergy doc discussed procedure with me to have the remaining 2 years of my shots at new location and how to transfer my vials for my shots. (He says this is common as people relocate.) FamilyCare Allergy said they would accept NOTHING from my previous doc. I would have to start all over again with skin testing and start my allergy shots from zero. Not only is this poor care, there is NO WAY my insurance would pay for the retesting and to repeat a year of shots!

I was very disappointed with my experience. I sought treatment for severe occupational rhinitis and…read moresignificant eye irritation that occurred at my work as a RN. After trying to endure unsuccessful treatment, my symptoms escalated and the ability to perform my job became impossible. Dr. Lien refused to complete my SDI paperwork. He did not acknowledge the severity of my symptoms and how much they affected my work. I left feeling unsupported at a very difficult time. After over 30 years of service and contributing to a system that I cannot access, I was forced to leave my job without financial support. I've taken care of patients my whole career and now that I need care, I can't get it. He was callous and careless and it has affected me greatly.

Dr. Lien is giving outdated, damaging advice regarding pediatric allergies and I would absolutely…read morenot recommend coming here. His advice caused us so much anxiety and stress and we wasted so much time in figuring out our child's allergies. Luckily we were able to get a second opinion from a doctor who is up to date on the current research and data. Do not waste your time or money.

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.

Dr. Yeung is such a great doctor! She takes her time to explain everything and comes prepared into…read morevisits. She actually takes the time to look at what had been happening wholistically to you. in regards to your medical history. I wish all my doctors were like her.

So it's been 5 years since I did my surgery, and unfortunately I have reoccurring sinus infections…read moreso I'm back here updating my review. When I went to Dr. Yeung's office recently, I was told I need another surgery! Apparently, they didn't take out a bone in my nose that was blocking my sinus from getting out, and that is causing me having repetitive sinus infections over the years to the point that I'm on anti-biotics every 3 months. They never told me before/after my first surgery that was an issue, or else I would have told them to go all in and remove that bone and do a complete surgery/clean up. This is super frustrating to me, and hence the 1 star.

Dr. Fast should be your first phone call if you have an allergy or immunology issue. Allergies and…read moreinfections can be misdiagnosed or ignored, with dire consequences and suffering if not treated early and accurately. I had a mystery pain that doctors could not figure out. Dr. Fast is smart and kind. She listened to my story for 5 min and was able to rapid-fire triage and provide a rare infection as a possible root cause. She proposed a simple test -- taking ibuprofen -- to confirm or rule out the infection. Imagine that -- instead of making me go get an elaborate, inconvenient, and time-consuming blood draw at a blood lab to confirm or rule out the cause, Dr. Fast gave me a free, self-administered test: take ibuprofen during a pain episode, if I don't have pain, it's the infection, if I still have pain, it might be something else. She is a genius with a big brain and a giant heart. For the Yelpers who didn't have the same experience, well, maybe they just don't understand competence and compassion when they experience it? I had to meet a lot of doctors in my mystery pain journey. Honestly, Dr. Fast is the best. She's a great communicator and one of those Harvard University/Yale Medical School/Stanford Medical School experts that could be talking on TV. In spite of the fact Dr. Fast could brag about going to Hahvahd, she keeps her impressive credentials to herself, is down-to-earth, is a great communicator with excellent bedside manner for all age groups and walks-of-life, including kids, seniors, young and middle-aged adults. Please google Dr. Katharine Fast and be blown away that the Internet agrees with me that she's the best allergy and immunology specialist in San Francisco and the Bay Area. You should book an appointment with Dr. Fast if you want an accurate, brilliant, approachable, and nice allergy and immunology expert on your side.

I really appreciated my visit with Dr Fast. She listened to me, thought things through, and…read moreempathized with my desire to get back to what I consider to be normal, not just a "clinically normal". Plus she was funny - she kept things light hearted and amusing all along! I can tell that she cares about the human, which is relatively rare for specialists.

Update: If I could…read moregive this place 0 stars I would. I went there a couple years ago to get an allergy test and start receiving shots. They said I have no allergies, even though the MA that implemented the allergy skin test did it wrong and just went down by back, without testing the other allergens. She just poked me hard and didn't changed out the stick, literally she got done with the test in less than 3 minutes. Of course I would be negative for the fact you only tested me for ONE thing. Needless to say. I went to San Carlos and I was retested and they found multiple items I was allergic to, like 10 NOT 0. That MA needs to be fired. I've been doing my shot for over a year now. Thank you San Carlos.

Horrible place to make an appointment at. The receptionists are horrible to deal with.read more

I came here after years of severe seasonal allergies, cat and dust-mite reactions, and lifelong…read moreallergic rhinitis. Honestly, I didn't expect much at first, the whole thing felt a bit "out there", but I was desperate enough to try. About 15 sessions later, I stopped needing treatments altogether, and I've been allergy-free for over a decade. Absolutely worth trying. The doctors and staff were fantastic, too. Thank you so much!!!

Before going to AAS, I couldn't have a Cat in my home & even…read morestaying in a home with a Cat would have been problematic. Since going to AAS, I no longer have Cat Allergies & am now a proud Cat Guardian!!!!