I am writing this review because the front desk secretary has been so helpful in helping me with my pre authorization for braces with our insurance. She has always been so helpful, patient and kind. I had a great experience because of her and As for dr ong, he has been doing dentistry longer than 30 years He is well educated, experienced and nice! He was patient with my 11 year old son who is so squirmy in the chair. I'm glad I chose this dentistry after moving to Cerritos and looking up different offices. Looking forward to more visits Thank you Dr Ong and staff! read more

Nightmares of horrible dentists and drills no more !!! Dr. Ong and his staff are Dedicated, Detailed, Well-educated & Professional ! Dr. Hamlet Ong has been my dentist for as long as I can remember--at least 15 years ! My parents are also patients of him! Dr. Hamlet Ong I come twice a year for my routine teeth cleaning visits. Dr. Ong is still my primary dentist and does most of my cleanings. A few visits back, at my routine cleaning visits, he took an xray and found a baby cavity (oh my !!). And knowing I drive at leaset 30 miles to see him, he was able to squeeze me in and get it filled immediately. After every visit he always wishes my parents well. Talk about excellent service!! Hygenist Isabelle In the past, Dr. Ong has done all my teeth cleaning, but at my past three visits, Isabelle was my hygeniest. She isn't there every day, but I guess I happen to schedule my dental cleanings when she's there. She is just as friendly, bubbly, professional and thorough! I always walk out of the office happy and satisfied with my clean, pearly whites. Office + Waiting room is spacious, doesn't feel stuffy or claustrophobic, large fish tank and neatly laid magazines. + Office is pretty big with several rooms. + Each room has a tall floor to ceiling glass with a view that is either the building lobby or outside. + Watch the morning show or news while getting work done. Each dental chair has a personal tv! + Dental tools come in individually wrapped/sealed bags. + Dental equipment is clean, seems up-to-date and in good condition. Other Random Facts + He's very professional and has been in practice for over 20 years!! + Excellent credentials---educated at USC and received his DDS degree at Georgetown University. + Denistry seem to run in the family because his mother, Dr. Sioe Hwa Ong, also shares the same practice. + Dr. Ong accepts most dental insurance (thank goodness!!) My work seems to change dental insurances often, but I've been lucky that Dr. Ong accepts them! Tips for Cavity-free Healthy Teeth ! + To stay cavity-free my dentist recommend brushing your teeth regularly (pref. morning and night) + After every meal, rinse mouth with water. So helpful especially after eating candies or drinking soda or juice. Flushes the film of acid on your teeth so it won't eat away at the enamel. + Popping a chewing gum after a meal also helps with cleaning plaque buildup on teeth. + Don't be lazy and FLOSS!!! Keep gums+teeth healthy with daily flossing and rinsing with mouthwash! More info ! www.DrOngDentistry.com read more

Dr. Ong picked on my normal teeth really hard without any anesthesia with her metal hook like device. She wanted me to cry and say it was hurting even though I did not have any cavities. After failing to make me cry, she just started saying 90% of my teeth had cavity. I did not take her advise and 3 years later, my other dentist said I had no cavity. Was it magic my teeth got healed without drilling and filling? I doubt it. Next time she tries to dig into your teeth, ask her what she is doing. By the way, she said I needed more than regular AND deep cleaning, and she charged me extra. I feel into that trap and paid more. read more

If I had the money and time I would sue the owners of this office. I went in because a filling fell out. Ive never had any problems with my teeth or other fillings. Well the older female dentist told me I need to have all my filing replaced because they were old. She said she could do them all for me that day. I have Delta Dental Insurance. My teeth have never been the same. She grinded all the fillings out and my teeth away. My teeth are now sensitive when I chew hard food. When I look at my teeth it sickens me to see how much filling are in my back molars now. I went to an other dentist and he told me that some dentist will take advantage of people with insurance. He said, the only time you replace fillings is when they give your problems. He just shook his head as he was talking to me. Keep away from this place if you have Insurance. read more

I just found out the expensive filling this dentist did for me in 2014 fell out & I have a cavity that this dentist did not find which could have been taken care of then but now it is a possible root canal for me. When the fillings were done here I had to have them fix it twice before I left due to the quality of the work. Also had severe sensitivity months later. I spent hundreds at this dentist. DO NOT GO HERE! read more

Dr. Ong and his staff are very professional. The office is clean and they accept most if not all insurance. I've had my dental insurance changed 3 times and he's taken them all. He's very gentle and professional and I dig the fact that he's got TV's over every chair. The office is huge and Dr. Ong does most of the work himself. Highly recommend. read more

The service itself is fine and Dr. Ong himself is friendly and quick. However, if you are like me and value your time, expect to wait. I've gone to the office numerous times. Most recent wait was 50 minutes. I don't think I've ever had to wait less than 15 minutes each visit. Also it is difficult to be seen, or at least for cleanings. The reminder cards I fill out never make their way to me. Luckily I keep track and am organized. I called a month before I was scheduled because I knew they wouldn't be able to fit me in if I called closer to my due date. Despite this, I still had to make an appointment for two months out before there was an opening for a cleaning. read more

I am pleased to have found Dr Hamlet Ong. The entire staff is friendly, professional and efficient. I could add more superlatives but that would belabor the point. read more

Dr Hamlet is a very good dentist, doesn't fool around, just gets the job done. Front office staff efficient and friendly. Hygenist also does a great job. Been a patient for 15 + years. read more

I've been a patient of Dr. Ong for 26 years and always have had good experiences at his office. The other day an old bridge came off and Dr. Ong was able to fit me in on short notice. He made a good temporary bridge and 2 weeks later he put in a new bridge. The staff is always friendly, I feel very comfortable going there. read more

Time to find another dental office again. I've only been here once to get checked out by Dr. Sioe Hwa Ong and have X-Rays done. Her work was fine, but the same thing happened to me as Karina L. below: she wore the same gloves she worked on me with while touching papers/items on the counter - gross. She also kept accusing me of not flossing (which I do, everyday), so I didn't appreciate that. I thought I would be in and out pretty quickly since I was the first scheduled appointment for the day, but I waited about 30 minutes before getting seated and someone else who came in after me was seated first. Once I finished, I had to get to work so the front desk person kindly said she would call me to schedule follow-up appointments. I never received a call back and months later, I finally called their office, explained that I had never heard anything back and she didn't even apologize. She had a really calm tone, but proceeded to make appointments without an apology. During this phone call, they wanted to charge me $370 (with insurance) for 4 sessions of deep cleaning and said I couldn't get any other work like a filling or general cleaning done without these deep cleanings. My brother is a dental hygienist and when I told him, he said that was crazy and that they were just trying to upsell! Aside from that, the process of obtaining copies of X-Rays is such an inconvenience. I've tried to set this up 4 times and my calls either went to voicemail or I was given the same answer: you have to call the day before you pick it up and this is the only way to do it. I work far from the office so it's difficult to take time off just to pick these up, but the front desk didn't offer any other solution. I needed these by a certain date and funny thing is, when I said this was the last day I can pick it up, she said "Can you come today?" Excuse me? Why didn't you offer this on the weekday I called and was completely free? She gave the excuses "we were shorthanded," or "we closed early." If your office says you close at 6pm, I expect that to stay true, especially for people who work full time jobs. If I am telling you that I need the X-Rays, why not prepare them right then and there or offer pay-over-the-phone methods? Or how about do digital copies? Or even mail them? Give me something to work with. I am a paying patient and there are so many other ways to get this handled, yet front desk was just so helpless and unapologetic. Seems like a way outdated system to me and a lot of wasted time. read more

I have been a patient since I was a kid & now at 45 years young, I plan to stay with this dentist. The staff & assistants are all wonderful, never a bad experience here. read more

I took my son here sometime in January for an emergency visit since he had a cavity on his upper left tooth. All the other reviews rave about how clean the office is but I was a dental assistant previously and I saw so many things at this office that are not supposed to happen in a dental office ever. The dental assistant who took my sons x Ray almost didn't put on the lead apron before taking the x Ray, I had to tell her to put it on him. Then dr ong came in the room and said he has a cavity we need to fill it and I said ok and he wanted to fill it with the amalgam filling without even offering me to fill it with composite materials. I had to request it. Amalgam fillings are very toxic I don't care if you're filling my sons baby teeth I don't want toxic materials to be used. Then the doctor who examined my son with gloves, went behind the front desk and touched and signed my sons chart with the same gloves on. Only to charge me some bizarre fee for materials that supposedly weren't covered by our insurance. It was a simple procedure. It has only been 7 months since we went in and my sons porcelain filling already fell off. I will never go here again the front office staff was rude too. read more

Dr. Ong has been my dentist for the past 8 years. Even when I graduated high school and left for college, I still prefer to come back here for dental work. The office staff has always been friendly, and they squeezed me in for cavities a couple weeks ago on short notice. Dr. Ong has a gentle touch and always asks me if I'm comfortable. I'll definitely continue coming here as long as I can; I would recommend him! read more

Front office is a disgrace to customer service! Very difficult to get appointments! Never mails the postcard they ask you to fill when you visit them to remind next appointment! If you call 2 months early, they will say it is too early. If you call later, there will be no slot available for 3-4 months! Give me a break! Hours are very confusing, inconvenient, hard to reach a front desk! May be the mom is easy to get appointment, I never tried her and asked for her son, a USC graduate who seems to do a good job Only if you can get him! If they fix their front office, they will get 4.5 star rating in my opinion and will be lot better. They also may want to focus on one location instead of multiple ones and doing a so so job? read more

Dr Hamlet Ong is a great Dr. accepts most HMOs, but his assistant/billing person is not too helpful or responsive. I hate the fact that they dont' bill for services rendered at each visit. They rather go by how much the total service (for multiple visit/treatment) cost divided by the number of visits. That made me go back and forth and it was VERY difficult to explain to my medflex spending account handlers and get reimbursed for treatment I paid for (according to the Dental office' payment plan), but will receive in the next visit/later. Dental work is great (not pushy, honest, detail oriented, quality work), but to avoid headacke with the medflex people, they should bill for what is rendered (and not bill in advance) when services rendered. Also they should update to a modern (using computer, not the ordinary film) X-Ray machine. read more

I would like to compliment Dr Ong and staff for a very professional, and courteous. The front office is clean and inviting, staff also very courteous and knowledgeable. .. read more

I took my 82 year old mom to be seen by Dr Hamlet but was seen by Dr Sioe instead. I told them that my mom is very particular about her teeth and wants to keep them as long as possible. Their X-ray machine was very outdated and did not clearly show the condition of her roots ( I came to know this when I showed the x rays to another dentist) Dr Sioe did not bother examining her on the dental chair as most dentists do. She checked her on the x-ray chair only. Her touch was very rough and my gentle sweet mom felt very violated. She felt that the dentist did not care for her needs at all and just wanted to get it over with and move on to the next patient. My mom does not want to go back to this dentist. read more