Saijai Peng, DDS MSD
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Saijai Peng, DDS MSD
Families and patients of our office we hope you are staying healthy! Our office is open and we have implemented several extra safety protocols to keep everyone safe for your visit. Thank you for your patience during these unprecedented times. Please stay well and we look forward to seeing you! Dr. Peng has been practicing orthodontics in the Walnut area for over 30 years.

Not only has she taught several hundred dental students and residents at the USC School of Dentistry over the last 30 years, she also holds many distinctions and awards for orthodontic excellence. Dr. Areepong has been involved in the world of orthodontics all his life. He specializes in moving teeth and creating beautiful smiles for each person by using the best innovations available.
Reviews (20)
Winnie Tan
Winnie Tan
Dec 24, 2021
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Needed a touch up on my brackets & Dr A was very thorough & quick. Explained every step so I would feel at ease! Walked out feeling fixed & brand new! Thanks Doc!!
Breanne S.
Breanne S.
Dec 06, 2021
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I originally saw Dr. Peng when I was in 6th grade. At the time I had a gap between my two front teeth, some of my teeth were crooked, and I had a serious over bite. Within a year and a half my braces were off, all of my issues were fixed and for the rest of my life I've had a smile that everyone compliments. At the time my braces were removed she added a "spacer" behind my two front teeth to ensure they always stayed together. After 13 years it broke off and I hesitated to get it replaced. Now 2 more years have gone by and I recently discovered that my gap is starting to return!
Yhair DeSantiago
Yhair DeSantiago
Oct 24, 2021
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Today a year later, I finally finished with my perfect smile treatment. I never knew I could gain so much confidence from just aligning my teeth. Dr. Peng’s many years of experience combined with Dr. Areepong professionalism made this experience so perfect. They always welcomed me and educated me on what I would experience throughout the journey. I would totally recommended them for their clean facility and friendly staff.
Marshall Lee
Marshall Lee
Oct 18, 2021
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Came for braces in high school and back again 10 years later.. and both times have been great! Staff is super friendly and are great with kids. Dr Peng and Dr A are awesome and they just give it to you straight, no fuss. Thanks to them, my teeth finally look good.
If you or your kid need your teeth fixed, give the office a visit. Thanks Dr Peng and staff!
Adriana Vega
Adriana Vega
Sep 16, 2021
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Dr. Peng and Dr. A are phenomenal Orthodontists!! They exceeded my expectations and I'm in love with the results of my teeth! All the staff there is so friendly and makes you feel comfortable, I will definitely miss seeing them!
Jeffrey L.
Jeffrey L.
Jul 20, 2021
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Dr. Peng and Dr. Areepong are simply the best! Both doctors utilize the most current up to date technology in their office. After consulting with a few other offices, I knew I was in great hands with Dr. Peng and Dr. Areepong. I LOVE my new smile and I would not have been able to get such a great outcome without their help. I highly recommend their office and their team!
Joanne Kawasaki
Joanne Kawasaki
Jun 21, 2021
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Dr. Peng and her staff are the best. I did braces with her when I was young.
Both of my sisters and my mom also did their braces with her. Today, I'm a mom myself and bringing my daughter to start her braces with Dr. Peng. I always get compliments on my smile. That's the first thing everyone sees when they meet you in person and on zoom!
Leticia Patino
Leticia Patino
Jun 19, 2021
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As soon as you walk in to Dr. Peng’s office you feel right at home. The staff is very friendly and professional. They take every precaution necessary to keep everyone safe during this pandemic. The staff treat each other with respect and kindness. I highly recommend Dr. Peng.
Christopher Lo
Christopher Lo
Mar 18, 2021
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Dr. Peng and her staff are amazing! I got braces through them over 10 years ago and my teeth are still perfectly straight. Recently one of the wires on my retainer came loose so I called them and Dr. Peng was able to fix it no problem. Her and her staff are still as wonderful today as they were 10 years ago. I highly recommend them to anyone who is looking for an orthodontist.
Gisselle Lopez
Gisselle Lopez
Jan 19, 2021
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First off, i have never met a staff so friendly and hardworking. Everyone, from the doctors, to the assistants in the front, are always in a positive mood. It's really refreshing. Everything about the office is very neat, clean, and organized. You can really tell that scheduling is a top priority to all the staff. Hands down a great experience, and I'm happy to finally have a better smile than I ever thought possible!😁
Joseph S.
Joseph S.
Dec 01, 2020
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Today has got to be one of the happiest days of my life. After 3+ years of wearing braces, I finally got them off, and the results are amazing! Before coming to Dr. Peng, I had gone to two other orthodontists who prescribed the wrong treatments. Mine was not an easy case. I had a serious crossbite that was causing jaw pains not to mention, I rarely smiled in pictures.

When I first consulted with Dr. Peng, she took the time to explain my options along with the expected results. She didn't flinch when I told her that surgery would not be an option. Being the professional that she is, she
Angela S.
Angela S.
Apr 23, 2019
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All three of my girls were referred to Dr. Peng, and since day one we've love the team.....Dr. Peng and Dr. Areepong together with all their staffs. Sarah and Diane have always been there to help and answer our questions. You are treated like family here no matter if you are short term or long term visits ..... they are always courteous and respectful. Thank you!
Faye S.
Faye S.
Jan 20, 2019
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She is amazing and knowledgeable. She was able to address various conditions for my family from crowded teeth, overbite, underbit, jaw issues. She helped me with adult overbit and my two kids teeth and my brother and sister. When other orthodontists recommended that both my kids each have two round of braces starting at young age she was able to figure out plan to do it once when they were older and have all their permanent teeth. When I moved to Bay Area, I flew down to Southern California to get treatment from her.
Timothy M.
Timothy M.
Aug 17, 2018
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Even though I wasn't the easiest patient to work with, Dr. Peng and company were able to do a terrific job in fixing the alignment of my teeth to a point where I am actually happy to smile! Thanks for everything and I fully recommend to anyone looking to make their smile perfect!
Juan R.
Juan R.
Apr 08, 2018
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Dr. Peng is absolutely wonderful!!!

We have known Dr. Peng for a few years now when I walked in to take a look at me but she noticed my daughter's overbite. She suggested that we start working on my daughter right away to get her overbite corrected since she was still at a tender age to have it corrected. My daughter now has perfect teeth with the most beautiful smile! She has also been amazing working on my teeth. Dr. Peng is the nicest and most patient Doctor, we are very blessed to have found her. Dr. Peng already has a vast experience in her field but she continues to educate herself
Linette F.
Linette F.
Oct 12, 2017
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My first visit to Dr. Peng was about 15 years ago at least. Now I am back to get new retainers since they are old and my teeth shifted a bit since I don't wear my retainers all the time. Nonetheless, Dr. Peng is the place to get your braces and retainers. Thank you to Diane for amazing service and just being such a sweetheart!

You can count on Dr. Peng's services anytime in your life- whether it be when you are 10 years old or now 30 years old!
Emily N.
Emily N.
Sep 28, 2017
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DR. PENG IS A MIRACLE WORKER!
I'm 60 years old and because of my daughter's upcoming wedding I wanted to fix my teeth. I gave Dr. Peng literally 7 months to do what others considered ot be an impossible mission and she delivered! Now my teeth are very straight and nice. Thank you very much Dr. Peng, also shoutouts to Sara, Laura and Diana, they are just wonderful! So for those "old" people out there, it's never too late to have great teeth!
Justin C.
Justin C.
Jul 18, 2017
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If I could give Dr. Peng a higher score than 5/5 I would easily do it. I rarely write reviews, but I felt like this was an instance where I should do it just because of the care that she provided, and how attentive she was in my orthodontic care. Dr. Peng treated me like family, and even recommended me surgeons for my mouth when I needed to get surgery, and made sure it fit with my insurance as well. Everyone in her office is extremely helpful and accommodating 6/5!!!!
Long Z.
Long Z.
Nov 03, 2015
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To Lou T. and Karl K.

This is to respond to Lou T. and Karl K. both review respond to my negative review.

Yes, I have bad experience with Dr. Peng. It was worse than negative. To your suprise and to my surprise too. Well, if you think just because you have been treated right then that means nobodyelse could possiblly unhappy with Dr.Peng. I wish you were correct. Because when I paid more than $4000 for first phase treatment for my son I was happily expecting to be treated
right as costomer. and all my intention was assist her to help my son going through the tough process.

To all the people
Pete L.
Pete L.
Oct 04, 2015
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This place is full of amazing staffs and skillful doctors. I came to this place two years with underbite condition. Every time I smiled I was worried about my smile. That made my look nervous and unfriendly the whole time. Now I'm walking out with brightest smile I've ever had in my life. All my family and friends said I've changed! Of course my smile now is perfect! And I smile confidentially every time now :))

Thanks to Dr.Peng, Diane, Sara and all their staffs.