1. Michael Seiden, DDS

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New York, NY

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Michael Seiden, DDS

3.9 (14 reviews)
Closed • Closed

Services - Michael Seiden, DDS

Cavity treatment

Dental exams

Tooth filling replacement or repair

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Upper East Smiles - Upper East Smiles Reception

Upper East Smiles

4.5(88 reviews)
0.5 mi•Upper East Side, Yorkville

I've been getting my teeth cleaned here for about 2 years now, and also completed my Invisalign…read morecare here. The staff is always so, so friendly. I especially appreciate how considerate they are when making appointments. They always aim to have my dental cleanings and orthodontic check-ins scheduled for the same day. If I were to ever move out of the neighborhood, I would remain in their care - 100%!

Please save yourself a headache and do not go here. I went here for a routine checkup and found out…read morethat I possibly needed two root canals. Dr. Kim claimed that she wouldn't know if I needed root canals unless she took my current fillings apart. She vaguely pointed out the problematic teeth on the X-ray. The whole discussion just seemed really strange to me because when she initially entered the room she said that my teeth looked okay. Also, I tend to take care of my teeth, and was not experiencing any pain. I decided to get a second opinion from another doctor in NYC. It turns out that I didn't need any root canals. The dentist that I went to didn't need to break down my current fillings to determine this. I feel like they hire a lot of inexperienced dentists at this location, and not senior dentists to give second opinions on procedures. After doing my research, I found out that Dr. Kim had graduated dental school a few years which probably explains her lack of knowledge.

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Upper East Smiles - View of the Hallway

View of the Hallway

Upper East Smiles - Laboratory and Sterilization Room

Laboratory and Sterilization Room

Upper East Smiles - View of the Hallway

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View of the Hallway

Alex Vasserman DMD - Dr. Alex Vasserman is located in Midtown East, NYC 10022

Alex Vasserman DMD

4.9(38 reviews)
0.9 mi•Upper East Side

I wish I could give 100 stars. What a great Dentist! His thoughtful approach and skilled…read moretreatment are beyond impressive. Friendly and comfortable office with state of the art equipment. AMAZING!

I typically don't write reviews--good or bad--but I feel incredibly dissatisfied and disappointed…read morewith my experience at Dr. Vasserman's office. I was recommended to this office by someone I truly trust, as I am not originally from NYC. The office itself is nice, and Corrie is typically friendly. For a basic teeth cleaning, this place is fine. However, if you need any significant dental work, I strongly urge you to reconsider. In 2022, my teeth had shifted due to Invisalign, and I wanted to have my front tooth (tooth #8), which had a crown from a childhood injury, redone so that it aligned properly. I initially considered finding a specialist but decided to go with Dr. Vasserman--something I deeply regret. Trust your intuition--if something feels off, it probably is. When I discussed my needs with Dr. Vasserman in April 2022, he assured me it would take only a few weeks. However, after many emails and back-and-forth conversations, I was informed that it would actually take eight weeks just for the lab in Chicago to begin my case. This was a complete contradiction to what I was initially told. When the crown finally arrived months later, I was shocked. This was supposed to be from the best of the best lab, yet the tooth looked nothing like the rest of my teeth. I don't understand why he didn't use a lab in NYC where I could have been directly involved in the process. It became increasingly clear that he didn't know what he was doing when it came to cosmetic dental work. After much back-and-forth, and clear frustration from Dr. Vasserman, we eventually landed on a tooth that was "acceptable"--but by this point, it was July. Between April and July, my temporary tooth fell out multiple times, I had to go back and forth to the office countless times, and I constantly questioned my decision to have him do the work. The worst part? Any time I called for an update or to get help, it often felt like the office was avoiding me. Calls would go unanswered, and I would have to follow up multiple times just to get basic information. The lack of communication and accountability was infuriating. Fast forward to November 2024--I started experiencing severe pain and discomfort in my front tooth. The pain was unbearable, keeping me up at night and even giving me headaches. I switched dentists due to my previous experience and didn't feel comfortable returning to Dr. Vasserman. Well, turns out my instincts were right--I now have a serious infection in the tooth. The crown wasn't even cemented properly, leaving it loose and unstable. The infection has become so severe that my tooth is now unsalvageable. I have to undergo major surgery, including tooth extraction and bone grafting, because the infection has eroded my bone. Here's the most frustrating part: I have had this tooth redone three times in my life, and never--not once--have I had an issue like this until this last procedure. The fact that I trusted a dentist who clearly lacked the skill and experience for this type of work is devastating. The moral of the story? If something feels off, trust yourself. Go to a specialist. If I had listened to my gut, I wouldn't be dealing with this nightmare now. If you only need a cleaning, this place is fine. But for any serious dental work, I cannot recommend this office and would strongly advise against going here.

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Alex Vasserman DMD - Dr. Vasserman is conveniently located in midtown east near the 53rd and 3rd stop

Dr. Vasserman is conveniently located in midtown east near the 53rd and 3rd stop

Alex Vasserman DMD - Instagram: AlexVassermanDMD

Instagram: AlexVassermanDMD

Alex Vasserman DMD - We specialize in cosmetic dentistry as well as Invisalign

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We specialize in cosmetic dentistry as well as Invisalign

Michael Seiden, DDS - generaldentistry - Updated October 2026

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