iSmile Dental
Rimma Portman, DDS:
Practice Profile Page


Rimma Portman, DDS

iSmile Dental
Brooklyn, NY (Williamsburg)

iSmile Dental
Brooklyn, NY (Park Slope)














A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

TMJ treatment

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 10:00 am to 6:00 pm

Tuesday: 11:00 am to 7:00 pm

Wednesday: 10:00 am to 7:00 pm

Thursday: 9:00 am to 8:00 pm

Friday: 10:00 am to 6:00 pm

Saturday: 10:00 am to 5:00 pm

Sunday: Closed


Monday: 8:00 am to 4:00 pm

Tuesday: 10:00 am to 6:00 pm

Wednesday: 10:00 am to 8:00 pm

Thursday: Closed

Friday: 8:00 am to 4:00 pm

Saturday: 10:00 am to 5:00 pm

Sunday: Closed


Dr. Rimma Portman, DDS





Check out what some of our happy patients are saying about us:

Barbara C. from Brooklyn, Brooklyn, NY (Source: Yelp)


I cracked my front tooth on a beer bottle over the weekend and needed to be seen as an emergency immediately. I called iSmile on Saturday at 3pm and was seen by 4pm. Dr. Portman relieved all of my anxiety, fixed my chip and assured me that everything would be fine. I was out of the office by 5pm. Honestly, I’m so grateful for the whole team and how they treated me.

Mariana McElroy (Source: Google)


I have had porcelain veneers applied by Dr. Rimma Portman and I love them. I finally have the smile that I always wanted. She made me feel very at ease during the entire process. She is now our family dentist as well. My children and my husband all enjoy going to the dentist because of her and her wonderful staff.

Constance Martin (Source: Google)


My wife and I actually enjoy our visits to Dr. Rimma Portman and her dental office. The office is modern and clean and Dr. Portman is just great. She makes us feel very comfortable as dose her entire staff. I never thought I would ever say I liked seeing a dentist, but I do. Dr. Portman is the best ever and we both would recommend her highly.

Yevgeny L. from Brooklyn, NY (Source: Yelp)


I went and visited the office a few days ago. I needed major work done on my mouth. Dr. Portman (who I believe is the owner) was very patient, outgoing, friendly, and comforting. I’m usually terrified of the dentist but the whole experience was painless. I am scheduled for 2 more visits but so far I have no complaints and only amazing things to say. The Dr. and front desk staff were very attentive to my needs. This looks like a new office that recently opened as all of the dental rooms and waiting rooms look spanking new.

Phillip Wilburn (Source: Google)


Dr. Rimma Portman installed my dental implants last week and I did not have any discomfort at all. They feel like they are my own natural teeth. I should have had this dome a long time ago. I would highly recommend Dr. Portman at iSmile Dental as a great cosmetic dentist.

Walker B. from Manhattan, NY (Source: Yelp)


I’ve been a patient of Doctor Portman’s for years and am so glad they have opened another location in Park Slope. No surprise, I received the same next level service that I do in their Williamsburg Office. Her bedside manner and personality take the anxiety out of going to the dentist and the office itself is beautiful. I cannot imagine going anywhere else.

Lenny R. from Jersey City, NJ (Source: Yelp)


So I heard about iSmile Dental from a friend in Williamsburg, and walked by their new Park Slope location and decided to drop in. The place looks great, it’s very clean and modern looking without giving off that hospitaly vibe that most dentist offices have. I scheduled a cleaning and checkup for the following week with Dr. Portman (the front desk associate was very helpful and welcoming too). I came to my appointment 15 minutes early just in case and was actually seen on time! Something that I was unaccustomed to at my previous dentist offices. Dr. Portman is extremely professional and she has a smile you’d expect from a place called iSmile =D. The checkup and cleaning went well, I had an A+ experience overall, they really set the bar high here and other dentists should look to them for a great example of what a patient wants out of a visit to the ‘dreaded’ dentist.

Fransisco Pizzaro (Source: Google)


Her Williamsburg office is incredible. Clean, modern, beautiful. I was a patient there for two years and then moved to South Brooklyn. I was so happy to know that she opened another office in Park Slope which is much closer to me. It cut my commute time in half and I don’t have to shlep across Brooklyn for every visit. She’s great.

Rachel Arnold (Source: Google)


I bet you didn’t know that dentists could be super cool AND honest. Well they can. Visit Dr. Portman and her staff. I went to a previous dentist in Park Slope, in what seemed like a basement of a townhouse. Really creepy. I didnt like the entire experience and he recommended a lot of work. Went down the block to Dr. Portmans new office on the corner of Union. Guess what? Turns out I have no cavities and did not need any of the other work my previous provider insisted I do. Found my gem in Park Slope.

Niket G. from Brooklyn, NY (Source: Yelp)


Updating my review because it is the right thing to do. After my review, I got a call the same day. Probably within two hours. I was surprised. I thought I would get the usual “we are sorry for the inconveniences caused” schlem. But to my pleasant surprise, I was heard patiently. First appointment offered to me didn’t help much, but I took it because I wanted to get treated by Dr Portmann. Suddenly, work changed a few things and I could no longer go for the appointment. I called back and they gave me a better time for the following day. Amazing. I go in today for my appointment and know the reason why they are rated so highly. The office staff paid close attention to details about my insurance. Gave me exact information needed. I wait for my turn to be seen. I’m welcomed by the pleasant doctor. So glad I went in for the second opinion. Great doctor and an amazing front office

Stan M. from Brooklyn, NY (Source: Yelp)


I absolutely loved my experience with Dr. Portman. She is super knowledgeable and has an amazing bedside manner. Dr. Portman suggested two options to resolve my problem and after two appointments I couldn’t be happier with the results. Front desk personal is very friendly and accommodating. Highly, highly recommend iSmile!!

William Karkar (Source: Google)


iSmile continues to impress me and exceed my expectations for customer service! The team is all so lovely and patient — very thorough and able to explain everything to you super clearly. RDH Issa is the queen of the show — you’ll never want to get your teeth checked or cleaned by anyone else! 5 stars!

Robyn S. from Theater District, Manhattan, NY (Source: Yelp)


Had a great first visit! I was walking by and decided to book an appointment and they were super professional and clean! And also played a Netflix show for me while they cleaned my teeth! I would definitely recommend this place to anyone looking for a new dentist 🙂

Amina W. from Brooklyn, NY (Source: Yelp)


Yssa, the dental hygienist was amazing. My family of five came here today for the first time and it was a wonderful experience. Clean and nice. The front desk staff was beyond accommodating and I will definitely return. Very glad we found this place to accommodate me and my family on the same day.

Olga L. from Brooklyn, Brooklyn, NY (Source: Yelp)


Dr. Portman is amazing!!! I scheduled an appointment after not having been to the dentist in over 2 years (Dont judge me!!!). I thought I was going to need a ton of work done but as it turns out, my teeth are amazing 🙂 No cavities at all. Dr. Portman finished my cleaning, spent time discussing every question I had and was incredibly sweet. She seems like she genuinely loves what she does and I couldn’t be happier with the visit.

Eugene Litvak (Source: Google)


I don’t often go online to write reviews, but in this case, really felt like good service needs to be praised. I’ve lived in Williamsburg for over 3 years now and have been WAITING for a good dentist. I’ve always been terrified of dentists and my old dentist (who I totally depended on) is far away. I’ve continued to go to him as I was really unhappy with the ones that I’ve tried here in the neighborhood when I first moved. I stopped by iSmile to see Dr. Rimma Portman and was immediately at ease. She has such a comforting/warm demeanor and made the whole experience very pleasant. She walked me through the whole process in advance so that I would know what to expect and at no point did I feel the usual anxiety that I feel when I’m in the chair. I’m so happy to be one of her new patients and will certainly be spreading the word. The office is beautiful and I was even given an iPad with wifi while I waited (although, the wait was very brief). I’m ECSTATIC that I found my neighborhood dentist.

Dava P. from Manhattan, New York, NY (Source: Yelp)


This great office is located in an even better neighborhood. Upon walking into this office, it is super clean. The temperature isn’t too cold like most doctor’s office which is a HUGE plus for me. There is a TV to take your mind off of waiting, but waiting really isn’t an issue here. You are always seen on time and considered when openings are available. The doctors, techs and receptionists are all warm and welcoming and do a great job explaining everything from co-pays to how your dental x-rays are improving. I like to know what I’m getting out of my insurance and this location definitely gives you above and beyond. Past dentists I’ve been to just had their techs clean my teeth then they’d come in for about 5 minutes, check my teeth and say “okay you’re good”. Waste of insurance money in my opinion. The neighborhood around this place is very hipster and has a lot of great food places. PS – They give you goodie bags after every visit, yay! Because adults want goodie bags too 🙂

Eric Posner (Source: Google)


I recently switched Dentists because frankly I did not trust my previous Doctor. I found iSmile and booked an appointment because of all the amazing reviews. Feeling obligated to write my own because I had a really positive experience in my first visit. I went for x-rays and a cleaning. Everybody was very professional, kind, they did great work on my teeth, and most importantly, I felt like I could trust them. I’ll be back in 6 months 🙂

Carlos Theofillus (Source: Google)


Dr. Portman Rimma is my cosmetic dentist. I first went for a dental exam and I was very impressed by all the staff and how friendly and pleasant they were. When I met the doctor I could tell immediately that I would like him and I was right. I have been back several times since and I have enjoyed each experience. I would definitely recommend this dental care office. Thanks again.

Elina K. from Brooklyn, NY (Source: Yelp)


I came in as a first time patient to see Dr. Portman. Everything about this experience was 5 stars from start to finish.  Upon arrival I was greeted and I was in the dental chair within 5 min. Dr. Portman was patient, carefully listened to all my concerns and addressed all my questions. My procedure was painless and quick and I have seen my share of dentists! I would strongly recommend Dr. Portman and can’t say enough great things about the visit!

Diana A. from Brooklyn, Brooklyn, NY (Source: Yelp)


Although I consistently visited a dentist for check up, x-rays, cleaning, my teeth were  still in a very bad, unhealthy shape. I am grateful that someone recommended Dr.Portman, in iSmile Dental Park Slope. Being treated in a modern, clean office with friendly, professional staff and a charismatic, polite doctor is a big plus. However, what is even more important for me is that Dr. Portman didn’t just treat the problem at hand, which was a severe pain in my tooth previously treated with a root canal. Dr. Portman spent a considerable amount of time examining my mouth and determining a treatment plan. I have been seeing Dr. Portman for almost a year and I finally feel good about my overall dental health and hygiene. In addition, Dr. Portman does amazing cosmetic work. She also improved the overall appearance of my teeth and bite. If someone is looking for good, reputable dentist I would highly recommend iSmile Dental.

Quyen L.. (Source: Zocdoc)


I’ve always had a huge fear of dentists since I was a toddler. That fear only worsen as I grew older. The last time I went to the dentist was about 7|8 years ago (as an adult). I never went back (different dental practice in Jersey) bc mid way I had a panic attack. They were so non-compassionate about my anxieties and that I was prone to panic attacks; I prob should’ve sued the shit outta them (lol). I chose iSmile based on the reviews on Yelp and 2 personal reviews from my clients. My tooth has been hurting for a month and I no longer could ignore the pain. So outta anger I made an appointment. Lmao yes you read that right! Anger; I was mad about something unrelated about my tooth. When I’m angry I feel real brave and daring (lol) so my ass made an appointment to the dentist (lmao). I am so unbelievably happy that I chose iSmile. I did write in my notes on Zoc Doc that I am extremely nervous. Not sure whether they saw that or not. Dun dun dun finally day of my appointment. The morning of I was contemplating on “not waking up in time to becoming ill to I’m lost and can’t find the office”. I went eventually… My dental hygienist was Erica; which I will ALWAYS request. I guess she felt and saw how nervous I was. And after explaining to her why I haven’t been to the dentist in forever she really took it seriously. She even offered to numb my gums which made me feel “safe”. By her doing so I noticed that I didn’t start to hyperventilate when she was about to start (which I always did in the past). Erica was amazing from beginning to end. She was so friendly, so kind and so understanding. I really truly appreciate her so much. Bc she made my experience easy and comforting. I think if things didn’t go as Erica did it I would never ever see a dentist again for another 7|8 or more years. She actually set it up for the dentist; I wasn’t afraid. Nervous yes but NOT afraid. Dr Portman was great too. Can tell she is passionate and understanding. Looking forward to going back in Feb; can’t believe I said that……… but uh yeah. GO TO iSMILE you won’t regret

Sydra M. from Brooklyn, NY (Source: Google)


I stumbled on this place without a recommendation or any research. I was just sick of looking for a new dentist who takes my insurance and they did, so I went. How lucky am I? ISmile is just a lovely place with lovely people. The staff at the front desk are all friendly and helpful. The place is very nicely decorated in calm colors. The dentists and hygienists were all very professional and kind. Two thumbs way up!

Santina Walden (Source: Google)


Simply the best dental visit one could ask for. I’ve had several veneers placed at both locations. Williamsburg and Park Slope are the standard for how an office should look. Both are clean, beautiful, modern offices. With that being said, there are many nice looking offices, its New York after all. Rimma and her staff stand out because of the care they provide. They’re professional, nice, caring. My smile has never looked better.

Walker B. from Brooklyn, NY (Source: Yelp)


I’ve been a patient of Doctor Portman’s for years and am so glad they have opened another location in Park Slope. No surprise, I received the same next level service that I do in their Williamsburg Office. Her bedside manner and personality take the anxiety out of going to the dentist and the office itself is beautiful. I cannot imagine going anywhere else.

Michelle G. from Woodside, Queens, NY (Source: Yelp)


Where do I start? Everything about this office is fantastic. The doctor and staff were helpful and sweet. I was seen 5 minutes after my arrival, with the paperwork that I filled out online, already printed and ready for my signature. I was seated by a very nice assistant named Vicky who I chatted with for 2 minutes prior to doctor Portman entering the room. She went over all of my questions, answered them honestly and directly. She was great. Quite honestly, I’ve never had a better dental experience anywhere.

Eugene L. from Brooklyn, NY (Source: Yelp)


I’ve been a patient of Doctor Portman’s for over 4 years and was excited to check out her new location in Park Slope. The same excellent service that I’m accustomed to in her Williamsburg office was what I received here. Her bedside manner and personality are amazing and the office is beautiful, clean and modern. I could never imagine going to anyone else.

Brittany B. from New York, NY (Source: Yelp)


I came to this office after being disappointed in my previous one and I’m so glad I did! The staff was nice and very patient, took the time to explain things well and give me multiple options. In my previous experience my dental office was trying to up sell and overcharge for things, and this office was quite the opposite- they came to me and recommended the most cost effective options they could and were very transparent. Very pleased!

Gloria Ingram (Source: Google)


I needed an emergency dentist and found Dr. Rimma Portman whose office was close by. They took me right away and Dr. Portman performed emergency root canal on a molar that was excruciatingly painful. Since that time I have been back several times so that scenario will never happen again. I owe my healthy teeth to Dr. Portman.

Mike Faybusovich (Source: Google)


What an amazing place and a great service. I had an emergency and was taken in quickly. The front staff was cordial and attending. I got walked into the room. Very clean and you can tell everything has been wiped clean. Dr Portman knew exactly what the issue was. Great dentist. Could not have asked for a better experience. You got a customer for life.

Ariel S. from Berkeley, CA (Source: Yelp)


Yssa is the great dental hygienist that everyone keeps writing about but can’t remember her name! She is amazing and honestly the main reason why I keep coming back for my 6mo check ups. I only schedule my appointments when I know she’s working. She’s very thorough and cleans very well and is GENTLE!!!! Most important when getting your teeth cleaned. And she takes her time. She is the BEST!!! 🙂

Yelena S. from Staten Island, NY (Source: Yelp)


I recently visited iSmile dental for a cleaning. My overall experience was a great one, I was seen in a timely matter even a few minutes earlier than my appt time. The receptionist was very friendly and warm. The facility is super clean which to me is huge. I received a cleaning by one of the hygienists and then met with Dr. Portman for an exam. All my questions and concerns were discussed and I didn’t feel rushed. Would most definitely come back for follow ups. Thank you!

Woodrow Aylas (Source: Google)


I had neglected my dental care for some time. Fiinally I decided to get some dental implants. I found Dr. Rimma Portman not far from where I live and went to have a consultation. I liked this dental office right from the beginning. Dr. Rimma gave me a dental exam and discussed the work I needed. I havebeen very pleased with this dental clinic and the work I have received and will continue going back.

Alex S. from Manhattan, NY (Source: Yelp)


I recently had some procedures done at Williamburg iSmile Dental and I have nothing but wonderful things to say about both the staff and my results. Everyone I had the pleasure of coming in contact with was exceptionally friendly and answered any questions that I had. Dr. Rima went above and beyond to make me feel comfortable, and involved me in every step of the process to make sure I was satisfied with the results. I can’t thank the staff enough for making every experience a pleasant one! I am very happy that she is adding a new office closer to my home. Best of luck!!!!

Keshia L. from Brooklyn, NY (Source: Yelp)


I had a cleaning here for the first time and it was a pleasant experience. The front desk staff was really pleasant and welcoming. The wait time was under 5 minutes and the waiting area is very neat and clean. They have a coat rack to hang your coat before you go in the exam area which is awesome. The location is very convenient as they are close to major public transportation so you don’t have drive and worry about the hassle of finding a park. The dentist has great bedside manner,although we met briefly to do my exam but it was short and sweet.The hygienist was very thorough and patient and during the process she always ask if I’m ok. I already set up an appointment for my kids and husband. I am definitely keeping them as my dentist. I


A New York native, Dr. Portman grew up in Brooklyn, the younger of two siblings. She attended Pace University where she was valedictorian of her class and received her undergraduate degree in Biology. After the completion of her degree, Dr. Portman attended New York University College of Dentistry where she earned her degree of Doctor of Dental Surgery. Following her graduation, Dr. Portman spent an additional year completing her General Practice Residency at Staten Island University Hospital. Prior to establishing iSmile Dental, Dr. Portman worked in several offices around the New York area gaining valuable experience as an associate dentist. Her experience in operative, fixed, removable and implant prosthetics and attachments, surgical extractions, periodontics, rotary endodontics, orthodontics and periodontal surgeries have been invaluable. She is also certified in Invisalign (invisible orthodontics) and is dedicated to the newest advancements in family and cosmetic dentistry. She keeps up-to-date with the latest technologies and strives to perfect her technique by constantly attending continued education courses. Dr. Portman believes that every patient deserves her thorough, personalized attention and provides her patients with a gentle, caring, comprehensive approach to oral health. She believes in conservative, preventative dentistry, and her goal is to increase the longevity of her patient's teeth. She has participated in outreach programs in the Dominican Republic providing free dental care to underprivileged children and adults. When Dr. Portman is not practicing her passion for dentistry, she spends most of her time with her family and friends. Her interests include tennis, cooking and traveling.