Kenneth Kai And Marcus Kai Orthodontist
Kenneth Kai, DDS:
Practice Profile Page


Kenneth Kai, DDS

Kenneth Kai & Marcus Kai Orthodontist

Kenneth Kai & Marcus Kai Orthodontist














A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

TMJ treatment

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 8:00 am to 5:00 pm

Tuesday: 8:00 am to 5:00 pm

Wednesday: 8:00 am to 5:00 pm

Thursday: 8:00 am to 5:00 pm

Friday: Closed

Saturday: Closed

Sunday: Closed


Monday: 8:30 am to 5:00 pm

Tuesday: 8:30 am to 5:00 pm

Wednesday: 8:30 am to 5:00 pm

Thursday: Closed

Friday: 8:30 am to 5:00 pm

Saturday: Closed

Sunday: Closed





Check out what some of our happy patients are saying about us:

Ashis R. from Morgan Hill, CA (Source: Yelp)


I went to Dr. Kai’s office a few months ago and was really impressed by his level of detail and caring nature. He is probably the authority on orthodontics in the Bay Area and will give you an honest answer. He has been in the business for a while and you can tell he just loves what he does. He’s not after the money like a lot of other professionals.

Leah Ozuna (Source: Google)


This is a great office, right now he is currently finishing up my braces and his personality is awesome, one time I went in cause I had accidentally broke my wire and he asked what I ate for dinner last night and I told him ribs and he asked, geeze were you chewing on the bone? Lol

Natalee U. from Los Angeles, CA (Source: Yelp)


So I am visiting from out of town and my daughter forgot the rubber bands for her braces which could mess up her ortho treatment so desperately I called Dr. Kai’s office for help they were extremely helpful and let me come in and pick up a pack of rubber bands I am beyond grateful what an amazing staff and Doctor !

Dina T. from Alameda, CA (Source: Yelp)


I drive all the way from Alameda to San Jose to be a patient of Dr Kai’s Office. I love all his informative and nice employees, they always email or text me when I have a upcoming appointment. I encourage everyone to go to him, I have a busy 9-5 schedule & they always find time to fit me during the lunch hour. & the biggest plus, they have a huge parking lot.

Judy-Ann Rosti (Source: Google)


Dr Kai and his staff are amazing! The staff is polite and professional. Dr Kai is easy to talk to. He explains the process and care at every appointment. He is very knowledgeable and I don’t think there isn’t an orthodontic problem he can’t fix. The office and facilities are ALWAYS clean. I would recommend Dr Kai and his team to anyone searching for a qualified and competent orthodontist.

Nacy S. from South Lake Tahoe, CA (Source: Yelp)


Dr Kai and his staff are all very nice and accommodating in setting up appointments. They are pretty flexible and can get you in right away if you have a broken wire/bracket. Dr Kai is very patient and always communicates with me on what is going on with my daughter’s progress (braces). He will take the time and tell you what needs to be done on next appointment and why

Hoa P. from San Jose, CA (Source: Yelp)


Dr Kenneth Kai was referred by my son’s plastic surgeon Laurence Berkowitz. My son was borned with Bi-Lateral Cleft Lip/Palate. Dr Kai has been seeing my son since birth. He is one of the few DR’s qualified to do complex surgeries of the mouth. In fact, he operated on my son when he was merely 3 months old. Dr Kai is very calm, patient, & caring physician. His office gets busy since he is so popular and has alot of recurring/returng patients due to his expertise. I’ve seen a few other patients who have Cleft Lip and or Palate. I’m very pleased and am happy that Dr Kai has the expertise to handle my son’s complicated case.

Yvonne Barrera (Source: Google)


I am pregnant and can’t lay in certain position. The wonderful lady helping me and Dr. Kai actually stood up for my appointment so I could have a safe appointment. They run on time and have friendly staff. I would recommend their services to anyone who needs ortho work. Worth every penny and I have the best ortho with great outcomes so far!

Malia W. from San Jose, CA (Source: Yelp)


Very nice office, clean and modern. Staff very nice, as well as Dr Kai. Appointments go smoothly and run on time. They try to work with my schedule as much as possible and I really appreciate it.  I do wish they had limited hours on weekend or later weekday times. I did get a consultation from another orthodontist, but my dentist strongly insisted I see Dr Kai for my issues. Dr Kai is coordinating my care with my oral surgeon. I’m looking forward to the end result. FYI, not the cheapest place. You get what you pay for.

Alan H. from San Mateo, CA (Source: Yelp)


I made a decision to have my teeth straightened again later in life. Being an older patient it was difficult for Dr. Kenneth Kai to complete my treatment with great results. I was missing some teeth, loss of bone structure and many crowns. I wasn’t your ordinary candidate for braces. Braces were recommended by my regular dentist both for health and cosmetic reasons. My original plan was for a three-year treatment but finally, after five and half years the braces are coming off. Dr. Kenneth Kai ran into many problems due to the nature of my teeth where he had to consider many options! I am happy with the results, a nice smile, straight teeth and a healthier mouth. I would recommend Dr. Kai’s Office to anyone who wants a beautiful smile.

Desiree V. from San Jose, CA (Source: Yelp)


I went to visit Dr. Kai for a consultation. I loved his professional approach and the way he made me and my mom feel welcomed in his office. I am still mulling over going to his practice vs. another orthodontist, but he seems very knowledgeable and was more than willing to explanin everything to me. He answered all questions and concerns I had, and I had many since he was my third consulation for my “brace face” delima.

Marcela M. from Campbell, CA (Source: Yelp)


Excellent front office staff. I am changing orthodontist and very pleased with my decision, my daughter was treated with respect and they tailored to her needs making her feel welcomed. Absolutly a five star treatment. Highly recommend it to all parents.

Mike P. from Ceres, CA (Source: Yelp)


Dr. Kai and Dr. Kim are absolutely amazing. Same goes for the entire staff. Everyone is super helpful and very friendly. I couldn’t ask for a better experience. One thing I’d like to note is that I was rejected by multiple doctors prior to visiting Dr. Kai and I was lost and filled with hopelessness but Dr Kai and Dr Kim descended from the heavens to save me from despair with such warmth and care. Jokes aside, very happy with the results if you’re struggling to find an orthodontist look no further and book an appointment.

Melinda S. from San Jose, CA (Source: Yelp)


Both of my boys had major underbites. Kai orthodontics was recommended by our dentist and I’m so happy we went to them. Both of them needed braces ASAP, Kai set up a plan and a payment plan to get us going. My youngest got his braces off today (May need a second set as his other teeth come in) and my oldest is on track to get them off shortly. Thank you so much! The office staff, assistants and doctor are amazing!!!!

Susan H. from San Jose, CA (Source: Yelp)


The expertise and equipment is to bar none and is the state of the art! The tender care from the doctors and staff is compassionate. Every appointment was valuable to me and the results are superb. I highly highly recommend Dr Kai, his professionalism and his staff. Thank you Dr Kai. I am very happy with the results.

JJ S. from San Jose, CA (Source: Yelp)


Society has created a stigma where a normal human being should have a phobia of dentists. Unfortunately, my orthodontist experience as an adolescent fit this haunting reputation. After wearing braces and headgear for 8 years, you would think that my teeth would have the golden smile similar to those of actors. But here I am 12 years later at the age of 30 in need of straighten teeth …. once again I inquired for dental need but had my reservations due to my past history. Based off several recommendations, I contacted Dr. Kai’s office about their treatment plans. My first conversation was with Diane, who provided beneficial information that encouraged me to meet with Dr. Kai in person. Upon arrival of their office, I was instantly impressed with their interior decor and up-to-date technology. So far so good. After a diagnosis of my teeth, Dr. Kai provided me with different options with their corresponding benefits. Unlike my previous orthodontist, he allowed me to make a choice after stating his recommendations. Not only did he showcase his knowledge from his extensive background and utilization of current orthodontic-treatment strategies, but he evidently showed genuine care for his patient’s needs. Words cannot fully describe my satisfaction of Kai Orthodontics. I’ve had my fair share of horrible untold stores with both dentists and orthodontists (I’ve never heard of anyone else having braces for 8 years). Furthermore, I’m not a true “yelper”, but my effort to write a review presents my advocacy for Dr. Kai’s profession and craft. Just to note, I’m not the best patient either (I’ve lost sets of Invislign), but the staff happily accommodated to me with a smile. – Current technology – Comfortable environment – Caring and accommodating staff – An accomplished and knowledgeable orthodontist What more can you ask?

Iram M. from Campbell, CA (Source: Yelp)


One of the best Orthodontists! Highly professional and takes time to answer queries and concerns. My case was complex and my dentist was worried that my front two teeth will eventually fall off. Dr. Kai took care of this and now I have a well aligned set of teeth, that I could have only dreamed! Highly recommend to anyone and everyone!

Chandra S. from Sunnyvale, CA (Source: Yelp)


I’m finishing up my invisalign series and have to say, I’m totally getting my money’s worth with Dr. Kai and his staff. They’re very well organized, always on time, very fast and efficient and focused on detail and quality. They’re great about scheduling and communication, and I always feel important, remembered and know what to expect with the whole process. I’d recommend Dr. Kai’s office to anyone (adult or child) who needs orthodontics.

Alan Hanamura (Source: Google)


I just had my braces removed today. My smile looks great. The orthodontic work was not a simple job, missing some teeth and bone structure. It would take a lot more time, many adjustments had to be done during my treatment but it was well worth the time and money spent. Anyone thinking about improving their smile should highly consider going to Kai Orthodontics.Thank you to Dr. Kenneth Kai and staff. You’re the best!

Sheila W. from Boise, ID (Source: Yelp)


If your looking for a great Orthodontist you can not go wrong with Kai Orthodontics. It is a family business his daughter and son have come to go in to business with their dad! They have an office off McKee and one in Campbell on Bascom. They are so great to work with and really listen to the patients and what they are hoping to achieve and want to look like in the end. Can’t say enough good things about them! My daughter was very nervouse and Dr Kai Sr. put her right at ease. They have gone through some office changes and its only gotten better. My children now have amazing smiles thanks to Dr Kai! To those who said he “lectures” let me say that it is his way of giving back and he acutally teaches students and Dr’s in other countries the techniques they may not have had an opportunity to learn other wise. He does donate his time how is that wrong. I would question if the one who stated he needed braces again if he even wore his retainers as anyone with braces know you HAVE to wear them all the time or your teeth shift.

Alyssa C. from San Jose, CA (Source: Yelp)


Dr. Kai & his staff are very friendly and accommodating! I’ve been going to Dr. Kai’s office for over 5 years now (first for braces, now for retainers). I’ve never had an issue during any of my appointments and I haven’t had any trouble booking an appointment either. Dr. Kai and his staff are very professional and knowledgeable when dealing with their clients. I would highly recommend this ortho to friends & family!

Katrina H. from Mountain View, CA (Source: Yelp)


Dr. Marcus & his staff are hands down the best in the industry. I never write reviews on YELP, but am inspired to share the amazing experience I’ve had with Dr. Kai. The following is what keeps me coming back: 1. Dr. Marcus is extremely knowledgable. He is very gentle and methodical when it comes to caring for your teeth. He creates a strategic plan of how to get your smile looking exactly how you want it. He goes above and beyond and cares about his patients. 2. The receptionist and dental hygenists are polite, helpful and conversational. 3. The office is clean, comfortable and well decorated. 4. State of the art equipment: Xray machine, flat screen tv’s, comfortable dental chairs, progress/simulation software, etc. I’m so glad Dr. Marcus Kai was recommended to me, and I would recommend him to ANYONE who is in need of an orthodontist.

Sang P. from San Jose, CA (Source: Yelp)


Hmm… what kind I say about Dr. Kai and De. Kim, they really know how to take care of their patients. I’ve been coming here for a couple of years now every time I come In they make feel relaxed and feeling good. They take their client care to the next level, from their staffs in the front to their techs in the back, everyone does a fabulous job. What more can I say about them, I recommend anyone who got some busted down teeth or some crooked smile and you trying to come out feeling like new you then come here and you won’t be disappointed!

Corrina Silva (Source: Google)


Dr. Kai is one of the best orthodontics that I have ever had the pleasure of meeting. I am so thankful for finding him. I was surprised when I asked my dentist who she would recommend as an orthodontic and she said Dr Kai!! Never knowing that I already chose him. My daughter is very happy with him. He always makes her smile and feel right at home. Thank you Dr Kai and Jose!! You all are the best;)

Glenn G. from San Francisco, CA (Source: Yelp)


Dr. Kai and team are knowledgeable, fun and a pleasure to work with. He is a real master at his craft and it shows during each visit. They are a family run business that’s truly after your own best interest. The facility is modern, warm and inviting for an orthodontist office. The staff is always very attentive and remembers who you are (Diem). Ironically, I actually enjoyed my monthly visits because of this and our nice little chats. They really feel like family after a few visits and make the pain of braces and tightening more manageable because of this. I’ve already recommended their services passionately in the past and I wouldn’t hesitate to give them a chance if you are looking for a trusted orthodontist.

Jenny L. from San Jose, CA (Source: Yelp)


Dr. Kai is the best. I use to have the worst teeth, they were a mess. Thanks to him my teeth are perfect and I always get compliments on my smile. I am the 4th generation that has gone to Dr. Kai in my family. My grandaunt went to him my mom, me and now my brother. Thank you Dr. Kai your the best!

Tammy Y. from Santa Clara, CA (Source: Yelp)


I’ve been a patient of Dr. Kai for several years since my dental work is more complicated then the norm. Dr Kenneth Kai, Dr. Lisa Kai and Dr. Marcus Kai are all very knowledgeable, attentive and caring with their patients. They always address all of my questions and concerns. The money spent for a great smile as the end result with excellent service and patient care is well worth the value. On top of this the staff are friendly, especially Juanita who is always prompt in helping me with my insurance questions. Thank you for such great patient care.

Kent W. from San Jose, CA (Source: Yelp)


We were referred to Dr. Kai by a family friend for our eldest daughter.  Our experience has been nothing short of perfection.  My daughter’s orthodontic run is complete now and was smooth sailing all the way.  We found Dr. Kai and his staff to be extremely professional and caring.  We highly recommend Dr. Kai

Craig Y. from Santa Clara, CA (Source: Yelp)


I had a great experience with them using Invisalign.   Price was very reasonable.  They were very patient and honest during the consulting process. Appointments were always smooth.  More of the clients are children but I did see adult patients like myself there.  They have a great electronic appointment system that makes the process easy.  Staff is really nice and fun to talk to.  The office is very comfortable and they have free water in the waiting room.   Parking is easy.   Dr. Kai is really good and very patient when explaining things.   All in all, I am really happy I chose them.

Ruth C. from San Jose, CA (Source: Yelp)


No regrets going to Dr. Kai. He was recommended by my dentist cousin for my daughter and niece. His clinic is state of the art and Dr. Kai is very abreast with the latest orthodontic technology. The clinic staff and assistants are all corteous and professional. Because of our great experience with him taking care of my daughter’s teeth in braces for more than two years, we also highly recommend him. I believe Dr. Kai comes from a family of orthodentists/dentists.

Ngoc N. from San Jose, CA (Source: Yelp)


I was referred to Dr. Marcus Kai by my dentist. Being the type of person I am, I like to get several opinions so I know what my options are. After 3 consultations with different orthodontists, I can see why my dentist referred me to Dr. Kai. He is extremely gentle, thorough, and takes his time with you. He also has a very calming factor that puts you at ease. At my second consultation with Dr. Kai, he went over my treatment options, Braces vs. Invisalign, and what the difference would be between the two. To my surprise, he was not the most expensive one either. They also offer flexible payment options. His new office in Campbell is amazing! It’s not like any other office I’ve been to. It’s clean, modern, and high tech. The staff there are very friendly, accommodating, and helpful. I highly recommend Dr. Kai to everyone.

Duy D. from Alum Rock, San Jose, CA (Source: Yelp)


The best service to the most problematic patient, yours truly.  Kai Orthodontist answered all my questions and concern before the procedure.  They held my hands throughout the whole process and they are very thorough with what they do.  If I had to fix my grill again (hopefully not) I will go back to Kai orthodontist no questions ask.

Anne Eichhorn (Source: Facebook)


The team at Kai Orthodontics has been taking care of my son, who was born with a cleft palate, since he was about 3 weeks old. He’s been in great hands here for the last 9 years! Now let’s hope my son won’t mess up all their hard work playing ice hockey!

Stefanie S. from Felton, CA (Source: Yelp)


I have been doing invisalign with Dr. Kai for the last year and a half or so and am so so happy with my experience. My smile looks 100 times better and i am astonished every time i look in the mirror at how straight my teeth are. Dr. Kai and his staff have made this whole experience easy from start to finish and are incredibly helpful and supportive. I was nervous to get any type of braces as an adult but the people on this orthodontic team have been nothing short of incredible. The staff are personable, professional, and so sweet, and Dr. Kai is very knowledgable in his craft, was happy to take the time to answer my many questions, and a wonderful doctor to work with. If anyone is looking for an orthodontist for themselves or their family I can’t recommend this place enough!

Anita N. from Campbell, CA (Source: Yelp)


My son has been seeing Dr. Kai for the last couple of years and we couldn’t be happier with the treatment he is receiving. He’s currently in Phase 3 of his treatment (Phase 1 being the dreaded full-on wired Darth Vader look, Phase 2 a period of using a retainer while his back molars came in) and when it was time to discuss his Phase 3 options, he was offered Invisalign in lieu of another year or so of Darth Vader, which made him so happy. As an 8th grader, this makes a huge difference in his self-esteem, not to mention being easier to maintain (no fiddly flossing between wires). The office itself is located in a convenient location with ample parking, and is very modern and hygienic. The ladies at the front desk are always there to greet you and answer any questions you might have, and there is even complimentary water or Keurig coffee available in the waiting area, which is really nice for those longer appointments. Dr. Kai himself is also highly professional and friendly, always taking time to come out at the end of the appointment to have a quick chat and let me know what the latest developments in my son’s treatment are. I highly recommend Kai Orthodontics.