High tech. Highly professional. Very laid back and calm. I have never needed a root canal until today and I feel really lucky to have come here. The staff was so pleasant and easy to interact with and the procedure went off without a hook, virtually no discomfort, and complete satisfaction. I hope I never need another root canal, but if I ever do, I'll definitely be back. Highly recommended. read more

Dr O'Callaghan is an excellent endo specialist and puts her patients needs first demonstrating compassion and expertise. In spite of the impossible situation the insurance companies put her in. Clearly, quality patient care comes first. read more

I had a really bad toothache and needed a root canal. I was referred by Dr. Saddler. I had a really nice experience; from the scheduling of the appointment, to the procedure, and completion. Everyone was pleasant. The Dr. explained the process and aftercare. He was amazing. The assistants were amazing as well. I felt at ease during my visit. I was able to relax. The only con I have is that they have modern equipment that they're not able to bill my insurance so I had to come out the pocket even though I have dual coverage (so I subtracted a star), but overall, I was very satisfied with the service. If you can get parking on the street, grab it. The parking garage was a little on the expensive side for 2 1/2 hrs. read more

Needed an emergency root canal and was referred to Endospecialists. Parking was easy, the office is neat, quiet and has 2 comfy couches - there was no reading material but we all carry entertainment in our pockets. They squeezed me in right before the holiday. The Endodontist was a bit rough, but worked quickly. read more

Excellent experience all around. Dr Kathpalia is wonderful. The billing aspect (not the cost) could use some improvement.

It was a great pleasure and experience having my root canal done with Dr. Sean Kim. I tell you no pain at all awesome...

Having a root canal is undoubtedly unpleasant, but Dr. O'Callahan made it an exceptional experience. I highly recommend her services. I also want to express my gratitude to her dental assistant and receptionist, who were incredibly kind and professional. In conclusion, I can confidently say that they are the best in their field. Thanks, Toby read more

Dr O'Callaghan is superb. She is energetic, extraordinarily smart, and willing to think about what suits a particular patient's situation, not just what general rules dictate. She's technically skilled about therefore able to do excellent work on difficult root canals. The office staff is efficient and friendly--great views out the windows, too. read more

My experience: Endospecialists were professional, informative, efficient and made my root canal an "easy" process. I cannot believe that was possible! read more

Everything went well. The staff was respectful and took very good care of me. A root canal was performed even after the procedure no pain.

Professional, caring, thorough. Dr. Siu was fantastic. I had a root canal, and a complex one at that, and she handled it with aplomb. I can't say that I want to frequent Endospecialists all the time, but when in need, this is the place! read more

Dr. Priya O'Callaghan is a caring, professional endodontist. My family and I have seen her for many years when there has been a need for service. She is always willing to go out of her way to make sure you're comfortable with the procedure prescribed. I recently had an emergency root canal done, and Dr. O'Callaghan arranged her schedule to fit me in her schedule. She explains in detail what needs to be done before performing the work. She and her staff are very attentive and they make sure to contact you to assure that you are okay after service has been rendered. My whole family has been to Dr. O'Callaghan and we would not choose anyone else for our dental needs but her. read more

Excellent, detailed care. State-of-the art array of imaging and diagnostic equipment. Extremely professional treatment, with careful follow-up. Dr. Lisa Siu and her staff are absolutely first-rate. The entire experience, including dealing with insurance plans, scheduling examinations and surgery, and establishing a plan for future treatment couldn't have been better. read more

I needed a root canal done on one of my front teeth. I was referred to Dr. O'Callaghan and had a good experience. She feels trustworthy, professional, reassuring, and capable. The space is clean and inviting, and the appointment management process was clear and straightforward. Unfortunately I don't have dental insurance that they accept, so it was quite expensive, but I think worth it to me given the visibility and sensitivity of a front tooth! read more

DR Priya's office staff is great.My sister is helping to pay for my dental care and the office staff are at the top of thier game when it come to communicating fees ,apps and schedules with her.DR.PRIYA was so gentle and precise that i didn't feel the numbing process and the root canal which was to difficult for my regular dentist to attempt was handled by her with ease.I was amazed that i was able to relax after 5 minutes into it.Most of the time I'm tense until the drilling stops ,not with her.I should have written this review 9 months ago,but today i find myself in need of her services again for a molar on the other side,and I'M ACTUALLY LOOKING forward to the visit.Knowing she's the best at root canals in my area. read more

I was separately referred to the Endospecialists group and Dr. O'Callaghan in particular by two of the most respected dentists in Berkeley (seriously check me!), Dr. Barry Kami and Dr. Eric Citron. I saw Dr. O'Callaghan and yes, she is all that. My case was an emergency and Dr. O'Callaghan worked me in that day. She patiently and fully answered every single one of my many, probably annoying, semi-informed dental questions. The procedure was pretty much painless and in less than three days I went from major pain to forgetting I ever had anything wrong with my tooth. There are many Endodontists running around and, any DDS can legally do a root canal. So what's the difference between a great Endodontist and a mediocre one, or a DDS dabbling in root canals? Inside the tooth are two canals filled with a soft flesh called pulp. Pulp gets infected (that's the pain) and the canals are cleaned. To be effective, the doctor has to get to the very bottom of the canal. But the canals bend so there is no way to see where the instrument is. The doctor needs to use a combination of feel (tactile feedback) and Xrays to know where their instrument is inside the canal. Think driving in a tunnel in pitch black. And that's where greatness comes in. I hope you never need her services, but if you do, save yourself some pain and see Dr. O'Callaghan. read more

I've always had anxiety with dental procedures. This visit could not have gone better from first phone contact through the end. No pain root canal and tooth build up for crown placement! and it only took a couple hours! highly recommend. Thank you Endospecialists. read more

My Doctor was so sweet and really made the whole root canal process manageable. I really felt like she was taking care of me. Glad this is done and the pain is gone. read more

I have had a lifelong apprehension, nay fear, toward anything dental. So you can imagine how aghast I was when I was referred to Endospecialists for a consultation on a pre-molar that turned into a root canal. Ordinarily, I'd have been palpitating something fierce after hearing this news, but the delightful and friendly Dr. Priya O'Callaghan and her staff made getting said root canal one of the most pleasant experiences I've ever had getting any sort of dental work. Dr. O'Callaghan and her staff educated me about the procedure and talked me through what they were doing as they did it, demystifying what would have otherwise been a nerve-wracking experience for me. In what seemed like no time at all, the procedure was over and done and I was sent home with instructions on what to do in order to take care of tooth until the crown can be fit on it. I recommend Dr. O'Callaghan enthusiastically, especially if you, like me, often fret at the mere thought of dental work. If ever I need dental surgery again, Dr. O'Callaghan will be the person I call to do it. read more

Dr. Priya O'Callaghan is a miracle one! I went in for a multiple root canal. She is super professional and a true expert in her work. She pays close detail to the patient, how they are doing before surgery, during surgery and later. Her staff is very attentive, well organized, and professional. I am very impressed! - Mohammed read more

I was referred by Dr. Kami who recommended this group and specifically Dr. Priya O'Callaghan to deal with my severe decay and need for two root canals. It was easy to set up the appointments less than a mile from my home. The office is friendly and efficient in getting you in. I liked the view of the Berkeley hills from the treatment room. The anesthesia was complete and her technique skillful. She was informative and I enjoyed seeing my xrays both before, during and after the procedures. read more

I called numerous dentists and the majority of them recommended Endospecialists as their go to group. First they take dental insurance and do all the paperwork in advance so you know the co-pay and they tell you that amount in advance. The office is spotless. The staff is friendly and helpful with a nice sense of humor. Once everything is ready they never look at a way to be cheap. I had so many x rays as the service progressed to make sure everything was done right. They did not double book so you were the person given attention. After I came home there were calls to make sure I was fine. They give great after surgery care so you know what to expect. In this world you get what you pay for and they are worth every penny!!! read more

I had to get a root canal and there was some infection as well. Dr Priya O'Callahan was extraordinary from beginning to end. She explained everything that was happening and the quality of care was GREAT. Off ice staff was helpful and professional. I would return here without question read more

This practice is excellent. Getting a root canal is no one's favorite thing to do, and certainly not mine, but I can't imagine anyone else making it more comfortable. All of the staff and the doctor were extremely calm and reassuring, which made me feel calmer. They explained everything that was going on at my request, and paused whenever I needed a moment. I couldn't recommend them more highly! read more

I was seen 25 mins after my appointment time, It appeared I was double booked with another person who was getting a root canal done at the same time and I was just a consultation with Dr Siu. I didn't get an apology or acknowledgd that she was running behind. Then my insurance was charged for two xrays that were never even done. I noticed the error that evening of my visit, contacted the office immediately and informed them of the error. Yet my insurance was still charged. Very unprofessional. read more

The service was fine but the explanation of the final bill left a lot to be desired. The estimate was $1,250 to $1,550 and the final bill was $1500 after I exclaimed at getting a $1,534 bill so she dropped the $34. I asked what the difference was between $1,250 and $1,550 and she said special services as she put the $1,500 on my credit card since I have no dental insurance. I asked what the special services I received were and she said a consultation, a root canal and a prescription at my pharmacy in caseI need it, all sounds like a normal root canal that should've been charged in the $1,250 range. I spent an hour and a half there and I am sent off to my dentist to have the final filling which I will also be charged for. read more

I was able to schedule and have a prompt same day office visit. My specialist was very efficient and diagnosed the solution to my dental needs very quickly. read more

My dentist referred me to ENDOspecialists to evaluate a problem with an old root canal/crown. My consult was at the Berkeley office. Dr. Priya O'Callaghan was very thorough and listened to the details concerning my problem. Today I had root canal work by Dr. O'Callaghan at their new Oakland office. The facilities are very pleasant. I've had a number of root canals done in the past. Dr. O'Callaghan is the most gentle, fast and professional dentist I've ever had work on the teeth. I have "extra' roots in most of my teeth. Turns out that the tooth in question had 4 roots and the previous root canal only got 3 of them. She also has the latest technology in her office. read more

I've been to this company's sites both in Oakland and in Berkeley both times for root canals. Don't get me wrong, the staff technicians are great. My problem is mostly with the payments and payment system. It's shady. I went the first time on referral from my dentist. When I got there, they insisted on $1000 up front payment! I have good dental coverage through my work but I paid it because they said I had to before they would even start! I got the root canal and it took longer then expected because I apparently had some unusual root structure that the doctor got quite excited about. They finished and a couple of months later I got a bill for $1200 more! I called my insurance provider because I was upset & the provider found out what had happened & said that 1) I have insurance so they should NEVER have charged me up front and 2) the second "bill" was already in the process of getting paid! The company OWED me some money back WHILE they were trying to double charge! Then they took three months to get me my repayment because they said the lady that does it was on "vacation". Just shady... A month ago, I had to have another root canal & my dentist sent me there again despite my reservations. When I called to confirm the appointment they asked for a "prepayment" of $198 and that was when I said no. I explained the other situation and told them it IS TOTALLY covered by my insurance & that was why I had to wait until the New Year so it would be a full payment. I got the root canal in Berkeley office and the doctor kept saying that there might be all sorts of other problems that I might have to come back for. There were not. I went back for the one month check , arriving 20 minutes early. The doctor wasn't there yet. She came in 10 minutes after my appointment time had started, took 10 minutes to get ready and had a five minute check, all the time saying that it was "probably" fine and that I might have to come back again in the future! She had had the technician take X-rays but when the doctor came back in, she started saying that the tech had xrayed the wrong tooth. But the tech said nothing, folded the body cover up, glanced at the doctor and left. She had xrayed the correct tooth, but I think the doctor was trying to get her to take more! All in all, the doctors ARE very capable and the tech staff is very good (thus ANY stars at all!) but they are the types to always try to get more money. Shady. If you have to go to this company, please stand your ground & don't let them muscle you into anything you don't need! read more

I was referred to Dr. O'Callahan on an urgent emergency basis with the worst tooth pain I've ever had in my life. My dentist managed to secure me a visit that very morning. Dr. O'Callahan properly diagnosed the affected tooth in spite of the fact that I had referred pain in a completely different part of my mouth. She noted an infection up top, and made me take several large doses of antibiotics before she did the actual root canal, which proved to me that she considered my overall health and safety a top priority. The next day, she was able to see me after hours and although I had a rather challenging time with the procedure due to the extreme pain and anxiety I was experiencing, (and the extra novicane I needed), she helped me get through it with calm confidence and reassurance. I was amazed to find that the very next day I was in almost zero pain, even though Dr. O'Callahan warned me to expect some pain for 7-10 days. I was SOOOOOO relieved and grateful for the expert treatment. I have more root canal work to do in the near future, and I'm much less stressed about it because I know Dr. O'Callahan will do it well! read more

Recently, I needed a root canal and was refered to Dr. O'Callaghan. She is kind and professional. She and her staff were amazing! I felt comfortable from the start and no pain throughout the entire procedure. I didn't even have any pain at home! I would highly recommend Dr. O'Callaghan and her staff. read more

No one looks forward to a Root Canal procedure but Dr. Priya O'Callaghan made the experience painless. She and her staff were personable and professional. She explained clearly what she was going to do , how she was going to do it and why she was doing it. Then exacuted the procedures flawlessly. I left knowing and feeling that I had the best Doctor for this procedure. read more

I have never before fallen asleep in a dentist's chair, that I was getting a root canal makes it even more surprising. My care was superb. I would highly recommend. read more

Delightful environment and friendly, helpful staff. Doctor O'Callaghan was very compassionate and sensitive to concerns as well as any discomfort I was having during my root canal procedure. She explained everything clearly and treated me as an adult. Cost was reasonable. read more

I had to get two root canals last year and my dentist sent me to Endospecialists. I saw Dr. Chien, who was incredibly kind, did an amazing job, and even called to check up on me afterward. 100% recommend. read more

I was referred to Dr. O'Callaghan by my dentist for a root canal. I am very grateful ! She is excellent and professional. I was cared for quickly and it was painless. I would highly recommend her! I even went back a second time when I needed a procedure. If I ever need help again I would definitely go back to her! Darryl W. read more

I'd rather have a root canal with Priya O'Callaghan than a cleaning with just about any hygienist - it was that easy. First, Dr. O'Callaghan is smart, confident, witty, and human - I was immediately at ease in her care. Then, her office is efficient, friendly, and accommodating - they went above and beyond to make the appointments, paperwork, etc. easy. And her dental assistant Kenneth is a critical part of the excellent care you get during the procedure - he made sure I was informed, comforted, and understood. The procedure itself was quick and, frankly, painless for the most part. I can't say enough good things about Dr. O'Callaghan and her practice. read more

I really like Dr. Siu and her assistant. I've had my share of dental work, I am not a young woman, and she's my favorite. In addition to doing great work, she's calm and thorough. Making sure all my questions are answered and asked me multiple times if I'm doing alright, or if I need a break. I just like her a lot. I went into the procedure with a 100+ heart rate, and she calmed me down to 70 something right away by just being friendly, personable and human. read more

My experiences here have been nothing short of professional, reassuring and comfortable! (The only pain I felt, was the pain I had when I came in.) I had to have an emergency Root Canal during the holidays and I was very stressed and in pain, miserable. (I hadn't slept well for weeks and was limited to chewing on one side.) Dr. O'Callaghan took excellent care of me and put a stop to the issues immediately. I was able to enjoy my friends, family and good food during the holidays! I was surprised that I didn't have any pain or issues following my procedures and was finally able to sleep like a baby. The customer service begins the moment you step foot through the door. You are warmly greeted with a smile. Loretta was extremely courteous and helpful with my financials. The assistants to the doctor are very knowledgeable and caring. They explained, in detail, everything that was happening to me, why it had to be done and what to expect. They checked on me often to make sure that I was comfortable and to answer any questions I might have. I was SO IMPRESSED, that I wanted to send them flowers or a gift!!! Afterwards, I forgot that I even had an intense dental procedure (Root Canal)! NO pain or discomfort followed. I would HIGHLY recommend Dr. O'Callaghan and the Endospecialists in Berkeley!!! THEY ARE TRULY SPECIALISTS!!! read more

I was referred to Dr. Callaghan for a root canal. Let me say, first off, that the root canal was in broad terms successful (the rot was removed and the pain is gone), and that the actual procedure were as pleasant and professional as a root canal can be. Nevertheless, there were a few problems with the whole experience which two years later, I have come to feel should be shared. First off, Dr. Callaghan did not completely close up the hole made with the root canal. There was (and still is) a small indent at the base of my tooth above where the root canal was, which my regular dentist predicts will turn into a cavity someday. The indent was visible right when I got home from the procedure, and I regret not saying something about it to Dr. Callaghan at the time (this was two years ago; I now live in a different locale). I acknowledge, then, that part of this was my fault for not saying reporting the problem when it happened. In any case, Dr. Callaghan's mistake (and my mistake in not reporting the problem) will probably cost me hundreds of dollars some day. Secondly, when I went in for the root canal procedure, I had a tiny piece of permanent retainer (wire) blocking the tooth, which needed to be removed in order to carry out the procedure. This piece of wire had no function anymore, as it was the remnant of a previously functional retainer which had mostly dislodged and fallen out (I hadn't got the piece removed since it wasn't bothering me, and I figured the cost wasn't worth it). I was happy to hear that the wire would be removed in order to carry out the procedure - until I learned that Dr. Callaghan insisted that she would have to put it BACK ON after the root canal. That's right! Because she was afraid of their office being sued in case my bottom teeth moved, she insisted on re-attaching the piece of wire, despite the fact that it was serving no function. (I have since had the wire removed, at $50 cost to me, and my dentist thinks it's INSANE that Dr. Callaghan did this). In retrospect, I wish I had fought harder against Dr. Callaghan's insistence. Third and lastly, the office initially overcharged me by about $120 for the procedure. I knew this because I had checked the bills I was sent carefully and called my insurance company to be sure. When presented with this, Dr. Callaghan's office put me on hold, and then came back and told me that some part of the procedure had "been on sale" that day. Based on the price they had quoted me initially and all of my bills to date, I believe this to have been untrue. In the best case scenario, they were trying to cover up the fact that they had made a mistake, which is a little disingenuous. In any case, I'm glad I checked my bill as carefully as I did. In the end, I'd say this place is probably a fine place to get a root canal. But please, please, DO stand up for yourself and advocate for your positions. This can be hard, especially if your dental insurance isn't great (mine wasn't) and you're afraid you'll face additional consultation costs. On the other hand, I didn't do enough personal advocacy and now I'm paying for it. read more