One of the best dental offices I've been to! I recently had a crown issue (not due to faulty work…read more-- sometimes these things just happen), and the way the office handled it was outstanding. Special shoutout to Barbara for always being on top of everything and super flexible -- she's amazing! The dentists are great, and the Oceanside location truly cares about their patients. I'm definitely keeping them as my primary. Thank you especially to Deborah and the entire team!

My husband visited this location for a broken tooth and needed immediate attention. He ended up…read morehaving three teeth removed. He is older, very pain sensitive and anxious. The staff was great, however, Dr. Schlesinger, the oral surgeon was brusk when explaining procedure and insensitive. When he came into the room to do the extraction he didn't acknowledge either of us, just went over to the instruments. Nor did he prescribe any type of pain med afterwards. I'm sorry, inexcusable.

There is a business model of dental health that can be intimidating for cost. What isn't?…read moreBut my experience is that the professionals and the staff make it worth your time and money. Dr Neha Khan is admirable. Smart, hardworking, understanding but firm. She supervises all clinical issues and I'm impressed with her composure and energy. Many negative comments are not necessarily true when these kind people work hard.

They can't seem to get my dentures right, Dr. Wang , says she's not God is why she can't get it…read moreright, been going on for 7 months, Went in today, young girl, inexperienced, had someone else dentures, gave to me , and said try this, I said those are someone else's She apologized , but had enough of theirs excuses , Everything is dirty, equipment, the mirrors, I had to ask for a napkin to clean it before using it,,,tv 's Dentures not practical,

Do not come here. Their front desk is ridiculously disrespectful. The first time we called, they…read moretold us they could give us a disk for my wisdom tooth scan, as I needed to take it to another dentist. They told us there were no extra fees (as our insurance wouldn't cover it) and there was a 10% credit card charge in person. After I had the scan, they told us we couldn't receive a disk. We asked why they told us different over the phone, and they denied any involvement. The next day we called asking to receive the scan however possible, and they told us they'd call us back but never returned the call. It was a holiday weekend, and we expressed urgency regarding this. We called later to further inquire until they put us directly on hold and then hung up after 15-20 minutes. We called after the long weekend, we called back to receive the scan, to which we received a singular screenshot of a 3D scan. This was unacceptable to my other dentist, and we demanded a way to view the scan in its entirety. In return they sent us an email with the same screenshot and a panoramic scan I also had there. Finally, I called and asked them to ask their boss who said he could give it to me, provided I was there with a thumb drive in hand within an hour. I had to drop everything to get my scan!

DO NOT COME HERE. They're sketchy about prices and billing and how much insurance is actually…read morecovering and the dentist is a very aggressive "Upseller" about dental work. I stopped coming to this location because they could be a bit cagey about what's going to be covered and always seemed really insistent that they do the work first and figure out what was covered after the fact I was offput but kept going for a while since at the end of every visit I paid out what I owed and according to them i was square. The event that actually convinced me to stop going was in 2021 when the dentist told me I needed braces and that my insurance "should" cover half of it. In fairness I have an open bite and DO need braces, however I also knew for a fact that they wouldn't be covered as that was one thing my HR rep mentioned specifically as not being covered. I remember the staff they sent in to discuss the cost with me REALLY tried to push it and kept mentioning that it was (It's been a while my numbers might be off.) $8000 but my insurance would cover half so it's REALLY $4000 and I had to remember that that would be spread out monthly over 2 years so REALLY it's $400/mo. The sale felt very aggressive and the general attitude felt like the goal was to get the metal in my mouth and THEN charge the insurance and figure out how much would be covered and charge me the rest after the fact. All good and well for them but i couldn't afford a known $4000 bill, let alone a surprise $8000 bill! And to be honest, i can't even afford the low ball $400/mo bill and, despite what they were saying, I was SURE it was gonna be $800/mo anyway since my insurance wouldn't cover that. I distinctly remember the doctor saying "yeah next time you come in we're gonna have to get you in braces" after I had ALREADY told them that it wouldn't be covered by my insurance and even as a monthly installment, even at the insurance covered price, it was not an expense I could afford. It really turned me off the way the doc tried to act like this was a decision being made FOR me and this was just gonna happen. So i just decided there wouldn't BE a next time to put the braces in and stopped going and let the whole thing go. My last visit was in March 2021. The reason I'm writing this review now in September 2022 is a SURPRISE $120 bill for fillings done in September/October of 2020! The office claims that though they cashed the checks from my insurance company 2 weeks after each visit they didn't notice the insurance was actually covering less than they claimed it was each time. And they just didn't notice until now. I ended up borrowing the money from a friend and just paying the surprise bill on card. But I keep thinking back to how hard they pushed braces and how they kept insisting insurance "Should" cover half of it, And how hard they seemed to be working to get the metal in my mouth before really being clear about the cost. Knowing how they handled the fillings bill I can only assume the braces would have gone the exact same way if I had just let myself get pressured into it! They would have put in the braces on the promise insurance is "Supposed" to cover half, done MONTHS, if not the whole 2 years of adjustments, getting the low checks but not recognizing that they were not being covered by insurance, gotten denied for 2 years and then popped up now in 2022 with a $5000 bill saying "Oh sorry turns out your insurance didn't cover 50% of it after all. But it's all done now so this is what you owe regardless. Covid ya know? Would you like us to do a monthly payment plan or send it to collections and destroy your credit?" Thank GOD I stopped going when I was turned off by how heavily they tried to push braces. ANYWAY regardless of their intentions you can't trust that the bills you get from here are ever the full amount of what you owe because they claim they don't actually compare what they got in the check from insurance to what the cost was until MONTHS (minimum 5 months since my last visit was 2021) OR YEARS (Since the bill was received 2 years after the first visit) after the fact. You may get a bill in the hundreds if you just had a few fillings but if you had extensive work done (Like brace or caps or a root canal) you could get a surprise bill in the thousands! "Covid" is not an acceptable excuse for having no idea what you patients owe you or what actually IS or ISN'T being covered.

Great environment, friendly staff. Care for the patients needs and wants. Attention to detail is…read morekey and that's something they specialize in. All the specialists there are amazing

The dentist placed a crown and the metal was visible when I smiled. I have a few crowns and the…read moreporcelain has always covered the metal where the tooth is visible. They wouldn't fix it except if I paid for a more expensive crown (which surprise, they had already "accidentally" charged me for.) In my opinion, I found them dishonest and unprofessional. I saw another review on here about the rude receptionist which I absolutely agree with. Run from this place. There are so many dentists to choose from in Nassau. You shouldn't have to tolerate dishonesty and nonsense.

There is no better dentist anywhere! Dr. De Leonardis takes the time to get to know you and your…read morefamily. He is kind and compassionate. The staff is courteous and helpful and the parking is right outside the building.

Dr. De Leonardis is an experienced, caring and outstanding dentist. I have been using him for over…read more14 years now and highly recommend him. Great location with parking.

Very unprofessional, I booked an appointment 3 weeks out. I have a broken tooth and is pregnant,…read morebecause I heard good things about this dentist I was willing to wait. I was contacted a few days before and had to get my appointment rescheduled because it wasn't booked correctly! They only had me booked for a cleaning and not a broken tooth. So I pushed it back another week! On my way to the appointment we got stuck in a bit of traffic that would set us back 15 mins and now im informed I cant see the dentist because you have another patient at 830. How was she going to assess and fix my tooth in 30 mins and my cleaning was never booked. I'm very annoyed as a 34 week pregnant person because im trying to be cautious and not go to just anyone this is what happens!

Poor communication and poor customer service. Made an appointment and they waited until I went in…read morefor my visit (weeks later) to tell me they don't accept my insurance. Then I asked for at least the consultation and they informed me that the implant specialist that I was scheduled to see was not even there! Do yourself a favor and get your services elsewhere.

I'm very pleased with the new Dr. I'm not an easy patient, and had some issues with previous…read moredoctor. The administration assistant answering calls and returning voicemails is courteous , efficient and professional. Special shoutout to Angela for putting up with my sh$t these last 3 years

Went to see Dr. Mark today. As always the staff was great. Very friendly and making sure I was…read moreinformed about what procedures were involved and always concerned about my comfort and making me feel at ease. I highly recommend this practice.

I've been going there for more than 20 years,(my whole family). Absolutely the best…read more Professional, complete experts. Great customer service, highly recommended!!!

I met Dr. Portenoy earlier today, for an opinion on how (or if) to restore the area of an upper…read moremolar I had extracted 15 months ago. He shared a lot of insight and information about my options, which I'm gun-shy about because the extraction and its aftermath were painful and protracted, with infection and other complications. I am comfortable that I have the information I need to make a good decision about my next steps, and I will get whatever treatment I decide on from Dr. Portenoy. The office staff is wonderful too!

The whole office from the desk staff to the nurse and dentist was a pleasure. They were all so…read morecaring Dr Gottlieb was so nice and professional I had such a great experience in this office. I would recommend them to anyone needing a root canal.

Dr.Michael Feldman was a 5 star Endodontist. Unfortunately, Dr. Feldman retired recently ,and I…read moreended up with a Dr. Rebecca Gottlieb. I had a bad feeling from the beginning based on Dr. Gottlieb's attitude. I deeply regret having used Dr. Rebecca Gottlieb and will have to leave East Coast Endondontics