This is an excellent allergist, he takes time and doesn't rush at all. Go above and beyond, you can tell he loves his profession and have a lot of passion for it. Very thorough! Highly recommended! read more

Dr Nsouli is a rare physician who really cares and educates his patients taking his time to teach you about your body. The true definition of "doctor". He takes his time and is the absolute BEST! read more

Dr Nsouli treated me for mold exposure and allergies and I discovered many of my symtoms were from things I had no idea I was even allergic to. He has a great bedside manner, explains everything well, and treats patients respectfully which too many doctors these days do not. I am continuing in my allergy testing and finding the best ways to get my symptoms under control. Because I was living in a construction zone following major mold remediation and tear downs until a day ago hopefully things will start to improve now. read more

Dr. Nsouli goes above and beyond. He is extremely knowledgeable and has great SOLUTIONS to allergies. Not long term meds. I love that if you need an injection it's all walk-in. Makes it so easy!! I also LOVE his front receptionist Lena. She's incredibly nice and sweet. read more

One of the best doctors I've ever seen for anything. Very nice. Staff is wonderful. Very accommodating with billing issues. Explains things very well and listens to his patients. On top of all that, he really seems to know is field. I wish all doctors (and their staff) were like this. read more

Dr Nsouli treats our entire family of five. We all have allergy and asthma and are undergoing immunotherapy (shots) in Dr Nsouli's office. We have been so very pleased with Dr Nsouli and his staff. He takes extremely good care of us and spends the time needed to make sure everything is taken care of. We are all doing so much better. Dr Nsouli is well known in the field of allergy and asthma and does research and speaks at conferences. He has offices in Danville and Castro Valley. We cannot recommend Dr Nsouli highly enough. If you need an allergist, look no further. Dr Nsouli is simply the best. read more

Yeah have to admit Dr Nsouli does have a wait at times. It really all depends on what's going on with the patient as he takes his time with you which I think creates the backlog. If I'm waiting, its because there's a patient he's with then he's getting ready for you who's next. His way of receiving payments is a pain as he only takes cash or check. You can't use your fsa credit card and manually applying for your fsa reimbursement takes a long time as his biller is slow. Now healthwise I had awful seasonal allergies and have been with him for years. I was absolutely beyond miserable years ago-itchy red eyes, couldn't breath, asthma the whole 9 yards. Dr. Nsouli repair me first then did the patch test which led to the shots. I did the shots for a couple of years then didn't need them anymore. I was then down to allergy pills and an inhaler. Now I need just allergy pills and occasional allergy drops for my eyes. Now with the season, I check up with him if I need it and he repairs me. Life is better. I can breath. My son never had allergies but then started to get them. We couldn't go to a movie without him coughing as the molds made him allergic. Dr. Nsouli fixed him with allergy pills and an inhaler. That was one year of treatment. The next season he had to take allergy pills now he's fine as I guess it passed. What is very nice about Dr. Nsouli is he gives you samples when you are with him so most of the time you don't have to go buy the inhaler which is really expensive. If he has samples, he'll give them to you. Sometime enough that you don't have to go buy any or enough to get you through till you can get to the pharmacy. He will talk to you on why you are taking what he's giving you and how its works. He'll explain to you. He has the office in Danville & Castro Valley so you just have to find out which office hours work best for you or if you need an appt they can work with you like if there's a cancellation they will call you. If you have allergies, he can help you. But you may have to deal with the quirks on having to wait or the copaying. read more

Dr. Nsouli is the best doctor I have ever seen. He is very attentive, taking the necessary time to do a thorough evaluation. His extensive knowledge (he does a lot of research & presents @ medical conferences) is clearly evident and he is eager to educate as well as provide the best care. He has gone above and beyond for me - ie. battling insurance companies, making time to see me when I became ill, and texting and calling to provide follow-up care. Many times I have had exchanges with other patients while we have been in the waiting room and we share similar sentiments - Dr. Nsouli is a godsend in our lives! I wish he could treat me for all my medical needs. read more

The best! You will never find a doctor has good as Dr.Nsouli, he's a doctor that listens.

My wife and I have been under Dr. Safa Nsouli's treatment for allergies for several years. He is extremely effective at what he does and takes a personal interest in each patient's specific allergic reactions to their particular environmental exposures. I highly recommend him. read more

If I could give Dr. Nsouli 10 stars I would, he is so concerned, knowledgeable and thorough. He has helped me tremendously with my allergies! He went above and beyond helping me as a doctor I had tremendous pain in my stomach doctors did not diagnose and he sent me for an ultrasound it turned out I had emergency surgery on my gallbladder. I am so greatful to him. He's the very best read more

Dr. Nsouli has our unequivocal recommendation! My husband and I have been patients of Dr. Nsouli for over ten years. Neither of us really suffered from environmental allergens until we moved to San Ramon Valley. Initially upon my move I had Kaiser as an HMO; they only treated my symptoms, non-stop headaches with occasional severe migraines, and frequent sinusitis. The very next open-enrollment I changed to a PPO and made my first appointment with Dr. Nsouli, who came highly recommended by a friend and work colleague. My life changed for the better! He performed skin tests to determine which allergens were problematic (Kaiser did not!) and I began a series of weekly allergy shots. Now with the combination of OTC and prescription medications, and maintenance allergy shots, I am almost always headache-free and haven't suffered from a migraine in years! My husband has also found exceptional relief. We still suffer from the occasional sinus infection, we just blame "Diablo" Valley for it now and make an appointment with Dr. Nsouli; Amanda always works to get us an appointment on short notice. She is great! This doctor takes the time to listen to his patients, which sometimes equates to a wait time; however, you can be assured he will not rush to "make-up" time during your scheduled appointment. Dr. Nsouli has taken the time to get to know both me and my husband over the years, a trait that was common with "family" doctors before insurance companies (e.g., corporate giants) highjacked the healthcare industry. I can never thank Dr. Nsouli enough for properly diagnosing another healthcare issue I had when my cadre of other "specialty" doctors were again only treating the symptoms (which included two surgeries!) and not identifying the underlying cause of the symptoms. I am now receiving treatment for the underlying cause and my symptoms minimized. Dr. Nsouli is a patient, kind man and an exceptional physician. He is the quintessential problem solver. Money hungry? Seriously? Never! He has our trust implicitly, and our highest recommendation. read more

This office deserves less than a 1 star!! They don't care about patient well being, they only care about getting paid. I was referred to this office because I'm experiencing terrible allergies for several months that is beyond my primary doctor's expertise so I called for an appointment. The office clerk said, I would get a call the next day if the doctor agrees to accept me as a new patient even though he is no longer accepting new patients. Apparently, he would accept me, except that whomever it was I spoke to told me that I MUST pay my copay at the time of the visit. I of course, concurred since this is a normal practice. However, she mentioned about my copay about 10 times. I told her I'm prepared to pay for that; I'm aware of my high-deductible plan since I don't utilize my benefits often. She apparently was unconvinced and told me that she wanted to make sure I can pay it since "doctors don't get paid by the insurance until you meet your annual deductible." After hearing about my copay so many times instead of being asked about my condition or scheduling an appointment for me to be seen, I realized this office is all about the money. They don't care about patients! They don't care about helping people get better, so I decided it was not in my best interest to be seen here. I have never in my entire life been treated by a medical office with such less disregard for my health. I would never recommend anyone to this office! read more

I am a skeptic. I never got shots my entire life, but I have had horrible allergies since I was about 14. I'm now 40. I suffered year after year taking allergy pills. My eyes and nose would water all day during allergy season. I also needed an inhaler for 2 months of the year. A few years ago someone recommended me Dr. Nsouli. When people see you suffering they try to help. So I called him. My insurance did not cover the procedure, but he worked with me. I paid out of pocket because i was so fed up with allergies. I felt like Dr. Nsouli DID care. Like I said I didnt expect it to work. It kind of seems like a scam. inject me with some liquid. Who knows what it is. I did it for about a year and then quit because of the cost. I never really thought about it until a few weeks ago. I just realized my allergies are basically gone. It took a year before I really noticed it. I use an inhaler maybe once a year now. I don't have constant dripping nose and watery eyes. The only thing that could have fixed this is Dr. Nsoul's work. If this seems like an add you can message me and I will email you from my work. I was born in Berkeley and raised through the east bay. Message me if you have questions. I don't know if it will work for everyone, but my life is so much better without having to deal with seasonal allergies. if i have one suggestion- GET insurance that will cover this. Kaiser does not. you can ask him. read more

It's tough to say whether three stars in a fair rating. I guess it depends on your priorities. I've been a patient here for several years...faithfully getting allergy shots weekly. They have significantly improved my quality of life and I can now survive the spring pollen season. So for that, it's a 5-star rating. However, two things continue to annoy me. (1) Dr. Nsouli doesn't accept credit cards for the co-pay, meaning I have to write a check and then manually apply for my FSA reimbursement. And (2) his schedule is clearly more important than his patients. I'm writing this review in his waiting room - 45 minutes after my scheduled appointment and still have several other patients ahead of me. If it wasn't for the current sinus headache I'm fighting, I'd be outta here. read more

I have never in my life experienced such an awful time trying to make an appointment. The lady who makes appointments is extremely unprofessional, confrontational and very rude, she talked over me the whole time AND did her best to make it impossible to get in to see the Dr. for whatever reason. Then she goes on to tell me how rude I am, honestly, I can't understand why someone would act so immature and hateful while someone is trying to be proactive with their health. I would not recommend this place to anyone. It's a shame people like this work in a place where they can get away with mistreating people in this way. read more

Dr. Nsouli is a compassionate doctor who cares about the well-being of his patients. He worked with me for several years and never gave up on helping me get well. Eventually Dr. Nsouli was able to diagnose me with the root cause of my problems which countless doctors failed to do. He saved my life and I will always be very grateful to have had doctor who went above and beyond for me. I no longer suffer from any allergies and had been allergic to almost everything! read more