Dr. Koo and Marissa were amazing today . They took such good care of me from the moment I walked in until I left. I felt extremely cared for and they treated me with such care and kindness. Thank you guys for your help ! Highly recommend read more

Dr.Johnny and Dr.Karen are the best! Very caring and gentle. The office is immaculate. All their staff is also awesome. Susan will go to great lengths to help you with billing. My forever Dentist office!!! read more

READ THIS BEFORE VISITING! ‼ I recently visited Dr. Karen's dental office, and I can't say enough good things about the experience! My wife had been raving about how great her visits were, and she kept encouraging me to go--and I'm so glad I did. From the moment I walked in, the entire staff, including the wonderful nurses, Natalie and Susie, made me feel so welcomed and at ease. Dr. Karen herself is an absolute gem--she's joyful, incredibly kind, and genuinely caring. She kept checking in with me to make sure I was comfortable, asking if I needed anything, and even reminding me to let her know if she was being too firm during the cleaning. What really stood out to me was how different Dr. Karen is from any other dentist I've been to. She has such a warm, friendly demeanor, and she kept the mood light with laughter throughout my visit. I was so relaxed that my heart rate was at 43--50. It honestly felt more like a spa day than a dental appointment! I can't wait to come back for my next visit. If you're looking for a dental office with a super friendly and caring team, this is the place to go! read more

I am terrified of the dentist. Marissa reassured me. Everyone was so kind! Susie is the best! Very detailed with the financial stuff! I was supposed to see Dr. Karen but she had left for the day. So I saw Dr.Johnny he was so gentle. He said I had good teeth for not going to the dentist in a long while. I was scared that i would be filled with cavities. I would definitely recommend this Dental office! They do not try to push you into any extra things that aren't covered by your insurance. read more

Brea Ranch Dentistry - Goodie bag. - General Dentistry Near Me - Brea, California

been coming here for nearly 5 or so years now pretty happy with karen, johnny and susan especially since they go thru hell with me and my last minute emergencies nice folks all around, you could ask for better dentists, but good luck finding any read more

I've been coming here since I was 13 (almost 15 years!). Friendly, attentive staff that cares about their patients. Honest work - they won't suggest a treatment you don't need. I've also never had to wait past my appointment time - they are ready for you. read more

Everyone here that I usually see is so kind (Dr. Karen Koo, Susan, Natalie, & Marissa). I was referred to Brea Ranch Dentistry from a colleague of mine, and I don't think I will go anywhere else. They do not try to upsell you on services you don't need, and you are in and out within an hour for routine work (xray/cleaning). I'm surprised that a Yelp reviewer (Chris R.) gave one star; maybe the doctor suggested you get other work done first before your broken tooth, depending on the condition of your existing teeth. And if you call the office, they'll tell you exactly what insurance they take. Anyway, this place is great, and I feel incredibly comfortable coming here. Thank you Brea Ranch team, I appreciate the extra effort in making your patients feel happy, welcomed, and comfortable! read more

Honestly the best dental office I have ever been to! I've always been afraid of the dentist but their professional and friendly staff make me feel right at home. They are awesome! The front desk makes me feel welcome every time I call to set up an appointment or walk in! read more

Brea Ranch Dentistry - Front desk Manager Susan ready for the weekend! - General Dentistry Near Me - Brea, California

I am so unbelievably happy that I found Brea Ranch Dentistry! I'm one of those people that has avoided going to a dentist for about a decade out of fear - I've had bad anxiety surrounding healthcare my whole life but knew it was time to force myself to schedule an appointment. I have Medical and they amazingly took my insurance! Scheduling an appointment was simple and the receptionists are so easy to talk to. Everyone I interacted with was so kind, organized, reassuring and communicative!! The office was very organized and had a generally comfortable and welcoming environment. During my appointment, everyone walked me through everything that was happening, checked in with how I was feeling along the way and gave me the most thorough care possible. I got xrays, a routine check up and cleaning and both the dentist (Dr. Karen) and dental assistant (I believe her name was Gloria - SO sweet!!) were gentle and thorough. Dr. Karen even explained what my insurance covers and kept my treatment within those coverages so I wouldn't be paying for anything out of pocket. On my way out, I was given all the info I needed and easily scheduled my next appointment a year out. I went in practically shaking and by the end, I felt totally calm and taken care of. Very grateful for the wonderful work they're doing here and have zero reservations about my next visit :) read more

Absolutely the worst experience ever with a dentist! Where to start...If there was a way to give "0" stars I would have! I came in because I had a broken tooth, which is still broken to this day; instead they suggested I get other work done before fixing my broken tooth! I had another family member go here with equally bad experience. My mother in law came in with a damaged tooth and was told that her insurance "doesn't cover" the work needed and had to pay out of pocket $950 CASH! Never coming back! read more

Probably the ONLY dentist office where I feel like I can trust everyone! Dynamic duo husband and wife can do it all. I went to a handful of dentist offices because I finally needed to go and each place I went to either was highway robbery or the receptionist were rude or the dentist scared me. No way jose not here, I feel so comfortable from my the second I walk in till the second I walk out . the receptionist always helps me with costs and figuring out what I can do and both dentists, husband and wife are very patient with me since I have terrible anxiety and trigeminal neuralgia my disabilities tend to get in the way sometimes but its never been a problem here and I will be coming here for years to come! read more

I'm really happy I found this place. I won't go anywhere else. From front desk all the way to the back they were all super friendly and very professional. They treated me like family. They took their time to text me and find me spots available since I work everyday. Thank you guys. read more

I am with Dr Karen and she is so tender and caring. I never feel like she's going to cause any unnecessary pain. Even when getting injected there is no pain. I get cleanings every 4 months and the procedure is always painless. I always go in expecting the worst and Dr Karen always makes me feel comfortable and soothes my mind. I would highly recommend this dentist. read more

Rudest dental office. They overcharge as well and I feel like they are scamming me out of money

Brea Ranch Dentistry is awesome... the staff are efficient and kind and Dr. Koo explained all my options and executed proficiently.

I've had the best experience here @ Brea Dentistry. Let be real, know one likes going to the dentist. My first experience when I walked through the door was pleasant. Greeted with a smile and felt right at home. The Front staff was extremely outgoing and I felt well cared for. The Dr.s were amazing, they walked me step by step in what was needed to be done. Kept making sure as I doing okay, once they started the Procedure. Once I was done, Susan made sure I was okay and also followed up the next day. I am a Patient for life. I've referred 5 co-workers and they love the service. Never have I felt rushed and everytime I've called in, Susan is always friendly and gets you an appt as soon as possible You'll absolutely love this office read more

I love love love this place. I normally do not like dentists but Brea ranch Dentistry whole team are phenomenal. They're honest, they listen to me, they are mindful about my budget. Every time I walk in I'm greeted by the nicest front desk ladies and they always ask how I've been. By far the best dentist I've ever had in my entire life and I've had quite a few because I'm so picky! read more

I'm shocked by how much I loved this place! I've had rather unpleasant experiences with dentists telling me I had cavities where I had none, or convince me I need a bite guard, or sell me on a teeth whitening. I can't remember the name of my dentist, but she was great. She did a really thorough job cleaning my teeth, was exceptionally kind, and looked over my X-rays with my to point out where I did/did not have cavities. The tech who helped take my X-rays was really nice too, big fan. read more

Excellent service and very friendly staff. Dr. Karen is professional, knowledgable, and helpful. I would highly recommend this office, especially if you are looking for a new dentist. read more

I was referred to Dr. Johnny Koo by a friend of mine that personally worked with him. Prior to my visits I've always dreaded dental visits. However, both Dr. J Koo and Dr. K Koo have gained my trust over the years. They're both gentle and always considerate of any discomfort or pain a procedure may cause. Dr J Koo does the quickest painfree tooth extractions with ease. Dr K Koo is very gentle with teeth cleaning and does a great job and the staff is always professional and kind. I will continue to recommend anyone I know in search of a new dr to visit these two dentist! read more

For years I've always been fearful of the dentist. When I researched and came upon Brea Ranch dentistry I couldn't have made a better choice. Dr. Koo and his staff are the best!! They are extremely kind and helpful and answer any questions I have. They give the best advice & also very attentive - that have catered to my needs (stop and take a deep breath) when I need to before resuming with procedure. I've had several cleanings with them and they get me in and out in no time. I truly never felt so comfortable going to a dentist until the last couple of years coming here. Thank you Dr. Koo and staff!! read more

Karen Koo, DDS is the best! Karen and her staff are amazing. I am so pleased and have had incredibly great experiences here. Karen is so thorough, gentle, and kind. Karen makes me feel very comfortable and at ease. She takes the time to explain what she is doing and communicates effectively during exam and deep cleaning. I highly recommend this husband/wife dentist team. read more

Ive had so much dental work done and I can honestly say my experience at Brea Ranch Dentistry was the best in my life! Drs. J. and K. Koo are so awesome! First of all Dr Johnny Koo gave me my first ever "comfortable anesthesia shot" (seriously, no pain!!! i actually didnt feel it... ) and then he proceeded to EXTRACT some teeth all of which i also felt no pain whatsoever, and, im not known as a "tough guy"---ie. My last visit to the I almost cried.... And to add to the MIRACLES, DR Karen Koo put some braces on my bottom jaw and heres a plus side to that. Im losing weight! I didnt even know that braces can help you do that. read more

So happy my wife and I found such a great dentist so near our apartment. They treat their patients like family and we definitely don't see us going anywhere else. Fantastic practice! read more

I came here specifically for the Zoom! whitening treatment and am so I glad I finally did it. Years of coffee and soda had turned my teeth yellow and gross, but after Marissa worked her magic, they came out dazzlingly white! She paid incredible attention to detail and did everything with a gentle touch. Love my new smile! Thank you, Marissa and Brea Ranch Dentistry! read more

I have extreme anxiety when it comes to the dentist. I have never felt more at ease with a dentist and his staff. Susan always accommodates my early morning appointments . I literally travel almost an hour to see the Dr's, Dr. Koo is always so professional and such a perfectionist, I trust him 100 % with my smile . I am in the process of having extensive work done . read more

Let me say that I only visited the dentisit out of pure necessisty. After growing up with horribe experiences with dentist, I only decided to go after weeks of pain from my wisdom tooth. Even at my age, I still had anxiety going in! The staff was understanding and did everything to make me comfortable and relaxed. Dr. Johnny Koo took his time explaining what he was going to do and made sure that I was calm and ready to have my widom tooth removed. As I lied back, eyes closed and listening to my tunes, I was totally relaxed. Before I knew it Dr. Koo tapped me on the shoulder to let me know it was all done. My experience was great! I highy recommend Brea Ranch Dentistry. Everyone had a smile, and the professional quality was excellent. Love that it was quick and painless. Great doctors, super geat staff!! read more

I highly recommend Dr. Johnny Koo! The BEST DENTIST I've ever had! Dr. Johnny Koo and his staff are caring and compassionate and truly concerned about your overall Dentistry health. They make going to the dentist less stressful, it's a relaxing environment and my smile has never looked better! So happy I found them! Thank you for all that you and your staff do! read more

My made an appointment for my wife Susan. They got her in the very next morning. She was in a lot of pain and had been for about three months. Susan got her setup with the paper work and was very helpful. My wife was very nervous going into this because she had a couple of bad experiences with dental work in the past. She had to have two molars removed. She didn't even feel the injection to numb her mouth to do the procedure. Dr. Koo is the greatest. The treatment Susan received from Dr Koo was off the charts. Her experience at his office totally changed her mind about dentists. So, that being said if you have any reservations about getting dental work done Dr. Koo will change your mind. Painless and easy to talk to and explaines everything very well. His office gets an A++. read more

Brea Ranch Dentistry definitely met my expectations and even exceeded them, for myself and my family. It is hard to find a new Dentist to trust after being with the same one for more than a decade, but Dr. Johnny and Dr. Karen made us feel like we had been their patients forever. They addressed any concerns we had and we walked away having made our 6 month check up appointments. Susan and the rest of the staff are great too. It's like going in and catching up with old friends. I definitely recommend Brea Ranch Dentistry! read more

: Thank you Dr. Karen Koo and Dr. Johnny Koo for the great experience and quality work you have done on my teeth. I am usually VERY apprehensive about needles and it was no sweat at all. In fact, I have let go of my childhood fear ( the moment of numbing ). Your assistant, staff and front desk people are considerate, caring and great professionals. Especially Susan :) she is caring, understanding, and extremely helpful scheduling and answering all my questions regarding payments, procedures, and making me feel welcome. Thanks to your gentle touch and your professional, yet personable, service. I am enjoying my new smile! read more

My husband and I were treated by Dr. Johnny Koo and we had a very smooth experience. I was scheduled for the very last appointment of the day and was 15 minutes late (so sorry!). They were willing to stay 30 minutes after closing to make sure I had a very thorough cleaning. I really appreciated that. Very friendly staff from reception, dental assistant, and Dr. Johnny Koo. We will definitely be back for our 6 month cleanings! read more

The worse experience of my life! Johnny koo is horrible at his job. His wife is awsome and has delicate hand. Dr. Johnny koo the foo is a different story entirely. He not only lost his professionalism while trying to pull out my far back tooth. He tried to pull a tooth knowing I had a toothache. I told him that I should take antibiotics but he insisted on pulling the tooth. 4 shots later and he still can't numb me entirely. He goes on to say you must do drugs I've given you the strongest stuff there is and I still can't numb you. Oh ya not to mention that I was making him nervous. Making him nervous. Please! I've never been talked to that way by any dentist. It goes to show you the type of doctor he truly is. The bottom line is I had an infection and that's why the moron couldn't numb my tooth. I would never ever advice anyone to take there kid there if he is the one performing the procedure. He would only traumatize them for life. read more

I am so afraid of the dentist, and it's been a while since I've had a checkup and cleaning! I researched dentists in Brea and decided on Brea Ranch. I was nervous but I went. I'm so glad I did!!! I adored the staff! I loved the dentist! I loved that it's in Brea! I didn't feel a thing and the dentist was very thorough. My husband has an appointment coming up as well. I'm just so relieved. read more

My return visit back to Brea Ranch Dentistry, Its too bad the rating is only five stars, they deserve a higher rating than that. Destiny, Destiny no escaping Destiny. Destiny is the new girl and truly fantastic, gentle touch and very kind to old people like me. I truly appreciate this office. Dr. Karen Koo and staff make you feel like a person and just another mouth to work on. Dr.Karen truly cares about her patients. I have sensitive gums, they are just bad. Dr.Karen was kind enough to give me some toothpaste samples for bleeding gums. I would never have gotten this from my prior dentist. They ask if you feel anything let us know. I do feel something, kindness, care and compassion. I cannot brag enough about this office. You want a pain free experience, this is the office to go to. My gums are not sore or achy. You are the best , see you in December. I am excited about going go to see my dentist, really!! read more

Have been using BRD for a few years now and have never been disappointed. The office staff along with the doctors are exceptional. Always kind, efficient and professional. I highly recommend them and will continue seeing them for my dental needs! read more

I just moved to Orange county 2.5 years ago and finding a new Dentist is NEVER fun or easy. But after my visit here I won't have to say that EVER again. Dr. Koo and his entire staff are amazing!! My first impression of the office and staff were important, I felt welcomed, comfortable, and the staff were extremely professional and kind. I always have a lot of questions and Dr. Koo explained everything and didn't make me feel pressured into doing treatments I didn't honestly think I needed. He was very thorough yet conservative. I highly recommend Dr. Koo!! read more

Our Family loves Dr. Koo at Brea Ranch Dentistry. She has a gentle, caring, touch when doing cleanings & she even taught us things we never knew before. She explains everything in detail so that we understand what she's doing & what we need to do! Everyone that works there from the Front Desk to the Hygienist is very sweet! Thank you Dr. Koo & Team for making going to the Dentist a pleasant experience. read more

Came here to get 3 wisdom teeth extracted. They were very professional and respectful. The removal process was near painless. I had one tooth removed at a different dentist a year ago and feared the aftermath. But after Brea Ranch removed all 3 my mouth healed less than a week. Would recommend this place to everyone. read more

I broke a tooth a few weeks ago. I've never had any dental work except for routine cleaning and braces as a teen. I was a little bit freaked out to get this fixed, i had no idea where to go. Luckily my fiancé had been seeing Dr. (Karen) Koo for almost a year and was able to recommend them for an appointment. I scheduled an appointment and was scheduled with Dr. (Johnny) Koo. They are a husband and wife team, by the way. His nurse took me back for x-rays and after viewing them advised me that I'd need a filing. I said "ok can we do that now?!". Luckily he says sure, we have time and I waited for him to return with the equipment. Don't laugh, but I am so ignorant to dental work that I honestly thought he was going to put some plaster-type material on my tooth & I was gonna be on my way. The doctor came in with his nurse, I reclined in my seat and he rubbed some numbing gel on my gums. The numbing injections were quick and painless and I ended up being glad that I didn't know what was going on, hehe. The filling was not bad at all, my face felt really odd being numbed up but it went away a few hours later. I was SO happy with the experience overall, I'm terrified of needles and was really pleased that the experience was almost totally painless! My tooth filling is smooth, I'm sure I'll be back to the office for future cleanings & routine care. Oh, they offer Zoom whitening and have specials a few times a year according to the front desk staff! Great experience here, I'm glad to have found them through my fiancé. read more