I am so grateful to the specialist for the outstanding care and professionalism I received. My root canal treatment turned out to be an exceptionally difficult, and the doctor handled the situation with great skill. Throughout the entire process, the doctor and his assistant was calm, compassionate, and meticulous, explaining everything clearly and making me feel safe and confident. If you need an endodontist, especially for a challenging case, I highly recommend this clinic. read more

What's the point of having insurance if they want $800-900 up front for your root canal? OH: nice office, etc. & so forth - FINE. But $800 up front & $250 if you cancel. Surprises like this are making me sick & tired of dentists. In response to your response: 1. You 'waived the cancellations fees'- why yes, yes you did. I had a communicable illness that involved coughing & sneezing & a fever, but thank you. 2. My insurance page does not show that the cash paid to you was applied to my bill which indicates that about $800 is still owed. Additionally, it states that bills weren't submitted to my 'other' insurer, either. An explanation is eagerly awaited. read more

I hope you never need a root canal, but if you do. Dr. O'Callaghan is a surgical genius. I can say it was painless! Her team is very kind and professional. read more

I saw Dr. Oza for a root canal, on my front tooth, which had an implant. I didn't expect to enjoy the experience, lol, but it was very pleasant! Dr. Oza is highly experienced, funny and explains everything, very well. His Assistant was wonderful as well. I had zero discomfort or pain, and am all good now! The price was reasonable too. read more

Professional & caring atmosphere. Dr. O'Callaghan clearly explained the issues with my tooth & the root canal procedure. Highly recommend this office ! read more

Everything went better with I expected. Every step in the two hour procedure was given to me in advance. There were no surprises and no pain. read more

I called today because I needed to see a specialist I was in excruciating pain and the receptionist was amazing she was nice polite and got me in today! I couldn't imagine going through another holiday in pain! When I came in the office everyone was nice they kept checking on me to see if I was ok. Dr.Soo and her medical assistant were amazing! If you need a endo please go here 10/10! read more

"You need a root canal" is an unwelcome statement that usually evokes, if not fear exactly, at least high anxiety. It always has for me: what with all that excavation and rasping and filing. Newsflash! Dr. Priya O'Callaghan has completely eliminated that, to the point where I will almost surely look forward to any future root canal work (I never thought I would ever say that). Why? Dr. O'C is streets ahead of any endodontist that I've ever experienced. Those were all males (of course) and they very good endos but, Dr. O'C makes them look very old school by taking endodontistry to the next level. For example, I discovered that her Hayward office has all mod cons. Top of the line equipment, including: (1) a hand-held, low-power, X-ray unit for taking multi-angle images to guarantee accuracy of the work she is doing in real time and (2) an ultrasonic root-cavity cleaning system that atomizes and removes all remnant nerve tissue that could potentially cause later infection. No more rasping with 19th century C-files. In fact, the ultrasonic process was so relaxing it almost put me to sleep. Dozing off ... through a ROOT CANAL!? Unbelievable. It's the first I've seen of these new technologies and they make the entire root canal procedure much more comfortable and totally painless. Very importantly IMHO, Dr. O'C thinks like an engineer which, for me (as a scientist), is very impressive. She's the only dentist (let alone ANY kind of doctor) that ever drew a diagram to explain what had happened to my tooth and what my treatment options were. I'm a visual kinda guy so, the diagram made me feel very confident that she really knew what she was doing. After the procedure, she reviewed some of my X-rays to further explain what things had been done differently than originally planned. My particular situation (removing a gold crown and metal platform) was unexpectedly difficult but Dr. O'C navigated her way through it with the real skill. The staff are very friendly, good humored, and knowledgable. Dr. O'C also has a great "bedside manner" and sense of humor but, she's all business when it comes to the actual endodontics; and that's what you want. Yelp's 5 stars is hardly a sufficient indicator of my endorsement. No dentist is perfect but, when you find someone this good, you immediately want to tell your friends and everyone. And that's exactly what I'll be doing; starting here. Thank you again Dr. O'C and staff. read more

From the receptionist to Dr. O'Callaghan all were very friendly and helpful. Dr O Callaghan is a very patient endodontist and very caring. The most challenging part of the appointment was finding my way into the building! read more

I Was referred by my primary dentist To have a root canal done on one of my bottom front teeth. I must add the fact that I'm typically very anxious just when coming to have dental procedures. This was going to include whitening as the dying tooth was basically was pretty brownish yellow. The entire process was great. I had to come back a couple times so that once The root canal was done, the Whitening Was then done.Dr O''callahhan ensured that I was comfortable The entire time. After the root canal, the discomfort was minimal as would be expected but ever so minor and only for a few days as she had indicated. I would highly recommend her and the support staff. 100% satisfied. read more

Very careful and thorough. I appreciated the attention to infection especially. I felt no pain! The office is very pleasant.

Beware! Please don't waste your time at this office. They're only concerned with money and don't care about your health. They even make you pay before your treatment! I went in for a retreat root canal with Dr. Hirose on February 11. I came back for a follow-up on March 10 to make sure I had no more pain, and I did NOT! Dr. Hirose said he'd check my tooth and send me to get my crown checked. For some reason, I was in his chair for two hours! Towards the end, the pain started, and he explained that he had accidentally put a hole in my tooth on my cheek side. He said it was nothing to worry about and that everything would be fine. Well, unfortunately, everything is NOT! fine. He lied on his paperwork and stated in his report that he had found a hole in my tooth that was already there, along with a small crack. The small crack was something new that I noticed in his report but he never mentioned it to me. It's illegal to backdate and falsify reports, and he did both!! The owner is so disrespectful and rude. All she cared about was my $900 co-pay, but she never showed any concern for me as a patient. Thank God I have a record of what happened. I left the office with my right side of my face swollen and in pain. I went to the ER, had a CT scan, and got a second opinion from another endodontist. My pain is getting worse, and my face keeps swelling up and turning red, I'm unable to chew on my right side because the tooth hurts so , I wake up with headaches and I have PTSD because of my experience. I put my trust in this dentist office, but they failed me. I was treated like a dog on the street. Every time I look at my face, I get more and more upset instead of taking full responsibility for what went wrong they chose to deny and ignore all my emails. The owner Stated I miss heard what he said when he told me that he accidentally put a hole in my tooth. I've been in a medical field 18 years. I report back to doctors, nurses and managers. Never have I misspoke regarding a patient chart. I most definitely will not be miss speaking regarding mine. Lack of Accountability!! But trust me they will be held accountable for his malpractice!! This is not how you start off in the medical field Dr. Hirose. read more

Recently, I required the services of an endodontist for a root canal. My regular dentist referred me to Endospecialists in Hayward and my provider was Dr. Scott Hirose. The office was modern and immaculate. Dr. Hirose was very professional and proved to be an excellent communicator as he explained in detail what would transpire throughout the procedure. The root canal was completed successfully with great consideration for my comfort while I was in the chair. Several days later, I returned to my regular dentist to have a crown placed on my tooth. My dentist and his assistant were reviewing the report and x-ray provided by Dr. Hirose regarding my root canal. I was very surprised by their reactions--they were so impressed by how skillfully Dr. Hirose had done the root canal! In addition to filling the tooth as might be expected, Dr. Hirose was able to fill two extremely minute root structures which were contaminated by the infection. My dentist said, "This is an example of an A+ root canal." The dentist's assistant (who coincidentally worked in the Hayward Endospecialists office for 10 years and knows quite a bit about root canals) said if she ever needs a root canal, she will see Dr. Hirose. Thank-you Dr. Hirose for such an excellent result! read more

I had a molar that needed a root canal badly, another tooth was getting blamed for the extreme pain I had been experiencing which is why it got so bad. Finally yesterday my Dentist found it to be a molar way in the back, 3 roots, 4 canals, big infection and it needed a specialist to fix it. I've met and had an appointment with Dr.Priya O'Callagham years before just for something simple but my dentist was on Vacation and I couldn't wait. I was really impressed with her, her tech's and front desk staff then and now. They are so professional, really knowledgeable, kind and gentle too. Yesterday I was referred to her for this root canal. Like a lot of people I'm afraid of the dentist and new dentists who know's! I was so relieved that it was her, just knowing it was someone I had already met and felt comfortable with was such a relief. She was able to get me in the same day for treatment. Dr. Priya was very clear about my options and explained what she would need to do with each of the choices I had, save the tooth was my choice. Treatment (root canal) was successful, today is the first day in a couple months I woke up not feeling pain, sore yes, pain no. I highly recommend Dr. Priya O'Callagham, I was treated really great and I never felt any pain not even when she numbed me up. Dr. Priya and her staff are top knotch she deserves all 5 of those stars, I wish I could give her and the staff 10 Stars. read more

Dr. O'Callaghan is the kindest, most knowledgeable, and professional Endodontists I have ever had the pleasure of being a patient of. She is masterful in doing root canals no matter how challenging. My tooth happened to have one of the longest roots that needed extra attention and expertise to remove. Thank GOD I discovered this specialist who knew exactly what my tooth needed to resolve the extreme pain. Her office staff (e.g. Ms. Yamani etc.) are also friendly, kind, and caring to accommodate patient's needs. Dr. O'Callaghan went out of her way to find me a general dentist to do the crown work to fit my schedule. A gift from GOD. Thank you. read more

A root canal is never something you look forward to. Dr. O'Callaghan was fabulous. The appt was much shorter than I anticipated. She has a true professional. Great chair, side manner as well. I would also like to say the office staff is the right mix of professional and people friendly. Very kind. read more

Root Canal Quality of care was exemplary... Office experience & STAFF was fantastic. All staff was communicative, polite, cordial, professional, informative and last but not least - Everyone was very observant and they communicated that fact ... read more

had to travel overseas and had a tooth issue just day before the international Travel. Endospecialists Hayward office were amazing to fit me in last minute. Dr. O'Callaghan was just amazing! She explained every step of the procedure and she is highly skilled probably in the entire universe! The receptionist Yamini and assistant Susan were very professional and welcoming. If you are looking for root canal procedure, look no furtherI I can't Thank enough for all there help! read more

Efficient. Compassionate. Responsive. Knowledgeable. That's who they are. They define what specialist means. read more

Got a root canal done - Great experience with Staff and dr. High quality care - from the front office to the dr.

Dr O'callahan was absolutely amazing. I went in for a root canal. My mouth is the size of a child so that was her 1st challenge she breezed through like the amazing Endo she is. She found an unusual situation and came up with an immediate solution that worked out for me. This is my fourth root canal from four different doctors and she has been hands down the absolute best. Along with her comes an amazingly knowledgeable professional staff. Don't hesitate make your appointment today. read more

The doctor did a fantastic job. I've had multiple root canals in my lifetime, but this was by far the most painless. I would definitely recommend this Dentist in the future for anyone looking. read more

I went for my first root canal and the entire team was helpful, sensitive, and very communicative. They assuaged my nerves immediately, and talked me through the whole process. My dentist was incredibly detailed and thorough. Not an amazing procedure to have done, but I felt so well cared for! read more

I was dreading a trip to Endospecialists because of all the horror stories friends have told me about root canals. Never had one so I didn't know what to expect. Within the first fives minutes with Dr. O'Callaghan, I knew I was in good hands. She was friendly, professional and obviously very good at her craft. My root canal lasted 1.5 hours but felt shorter because of how efficient the Dr and her assistant were. All my anxieties about a root canal evaporated after this visit and I highly recommend Endospecialists to anyone looking for the best experience with root canal work. read more

Dr. Priya O'Callaghan is excellent. She took amazing care of my teeth. She is kind, precise and explains every step of the way. Dental visits can sometimes be a little daunting, but her and her staff made me feel very comfortable and welcome. Thank you Dr. O'Callaghan and everyone at EndoSpecialists for all that you do! read more

A wonderful and calm experience from beginning to end. Very professional and the ambiance is peaceful. I'm not happy that I have to go if for a second root canal but if I have to I'm glad its with them. Thank you for the wonderful experience. read more

if I could, I would rate endospecialists in Hayward beyond 5 stars! They have surpassed all my expectations. this is my1st experience being treated by a root canal specialist and was very anxious. Did not know what to expect as to fees, and care. The staff was very clear in my out of pocket expense and everything was transparent. Dr Priya O' Callaghan is a super star. She was not only very thorough, patient, and beyond knowledgable. She is the epitome of what a specialist should represent. my root canal was not easy but she made the process look like it was not complicated. Thank you for making this 1st experience a very memorable one, in a very positive way! read more

I've been blessed to have such a great specialist & the staff is great also. If I could have them as my primary dentist I would. Now my family has to awesome dentists! read more

I was referred to Endospecialist by my treating dentist. She told me she thrusted this office as I needed an emergency root canal. Endospecialist saw me the next day. The treating doctor explained my condition and gave me options on how to treat my condition. She was not pushy. They started the two day procedure immediately. The treatment team worked well together and they gave me instructions on how to deal with the possible pain. They also gave me pain medication. They had an opening the next day and they finished my root canal. It has been two hours and I feel great. I definitely would recommend them. read more

Quick and effective treatment!! This is the third time I have been to practice and each time Dr. Priya is more efficient and practices with even higher quality standards. Appreciate you! read more

I'm so glad I was referred to this wonderful practice. My tooth was an absolute mess. If you could see the before and after x-rays, you'd understand. I didn't think the tooth could be saved. Thanks to the meticulous work by the very nice Dr. O'Callaghan and the Gentle Wave procedure, it was fixed with a painless root canal. read more

Went in for a consult/eval and learned I needed a root canal. Scheduled for the next week. Very professional, efficient and friendly. Not that anyone wants a root canal, but I would definitely return here if I needed another one read more

Dr. Priya O'Callaghan and her team were amazing! Before she did anything, she gave me a start to finish explanation of my situation. She also drew a picture, which was really helpful! I didn't think it was possible to have a root canal that was essentially painless. The staff was kind and very attentive. I expected to feel at least a minimal amount of discomfort, but this never happened. When I got home, I felt a little sore from just having my mouth opened for an hour, but other than that I felt 100% by the next day. I was not thrilled to need a root canal procedure, but I'm grateful to have met Dr. O'Callaghan, she's absolutely a credit to her profession!!!! read more

My treatment was excellent. I have been to Dr Priya O'callaghan and she has always been professional and caring of your situation. Very convenient and the parking is wonderful. I have had a root canal done by her before in previous years and she is alway's on point. read more

The staff was great and very accommodating with my availability. Dr. O'Callaghan and her team were so comforting and understanding to my situation. They made sure my treatment was explained in detail and I had options. I'll most definitely reach out to EndoSpecialists Hayward again! read more