I'mma CHICKEN BABY full stop! Terrified of any dentist office! I have full on panic attacks in the chair. I need an emotional support person holding my hand the entire time and constant breaks just to calm down. I'm the problem! But... DR KOSTA IS THE CURE!!!! He and his staff (every single one) are incredible!! The patience, the kindness, the entire vibe, not to forget the spectacular views, help me get through my fears each time. I didn't wanna write this review. I wanted to keep my favorite dentist a secret but I didn't it for all the other Chicken babies out there!!! Come to the safe space! read more

BEWARE, they dont back up their work. i had a few chipped teeth repaired and 5 months later the corner broke off one while eating doritos. i reached out and notified them but was told that even if it happened the day after the repair, i would have to pay the full amount to fix the tooth again. i understand i was eating doritos but they are not tough chips to eat. she didn't stop to ask anyone or take a beat and say, "let me see what we can do for you". just a hard no. in the past i had a similar issue with a different tooth from eating and that dentist repaired it at no additional cost and has been solid for years. which is very disappointing because in the past i came here for two+ years before returning as a patient last year. i was asked to make an appointment to have it fixed and pay again but no thank you. ill be taking my business elsewhere. read more

Dr. Kosta is fantastic. Fair rates, fantastic staff, and Hocus Pocus on every tv during October.

Great experience! Dr. Kosta and his whole staff were lovely! I'm very happy with my cleaning and service. The staff is very kind and accommodating! read more

Dr. Kostas is the best dentist I have ever been to. He is not only gentle and very professional but he is totally honest. Other dentists try to tell you that you need a deep cleaning every three months and a whole bunch of other high ticket unneeded procedures but not Dr. Kostas. You can look far and wide but you will not find a dentist like Dr. Kostas. Believe me. read more

Dr. Kosta knows his stuff. He was very on purpose with my first visit and was able to fill my cavity within 2 weeks of my first cleaning. I have not had any issues with my tooth since and I will be using him as my primary dentist going forward. Highly recommend to everyone in Simi! read more

Top Notch dental office & staff. I've been a patient over 3 years. Typical twice yearly cleanings are something I actually look forward to. Any recommended procedures are clearly explained and costs spelled out in advance. Highly recommend Dr. Kosta and his Team. read more

It's now been over a decade that my family has visited Dr. Kosta, and I am more impressed by this dentist office than ever! Warm, welcoming, highly professional staff. And Dr. Kosta is as friendly as ever. My wife, kids, and I love seeing him every six months. We know we will get a thorough cleaning and an honest, fair evaluation of any dental issues. And probably a good chuckle or two as we chat! So grateful we found Dr. Kosta! read more

Super friendly staff and very efficient. Miss Christina and team were really great at making me feel comfortable and the service was fantastic. Dr. Kosta is so friendly, detail oriented and the whole experience was A+, thank you very much to the whole team and I highly recommend this Dental office. read more

Dr. Kosta and his entire staff are wonderful! Everyone hates going to the dentist, it's usually a painful time in your life and the smell of the office itself makes you nervous. The front desk staff are so kind, patient and informative. Dr. Kosta himself makes you feel as though he genuinely cares about your dental health. I'm a new patient and I finally feel I found my families dentist! He is honest and will recommend the best specialist in town (if needed). Look no further for me the best dentist in the area! Added bonus: they play the movie Elf all December long! read more

Let's see, where do I begin? Friendly staff, very knowledgeable and professional. Dr. Kosta and his staff look out for the best interest of their patients and offer a great service to the community. Painless Dentistry at its finest! I've been coming to Dr Kosta for years and I'm very happy with the service and his down to earth approach and honesty. Thank you Dr Kosta and staff, you guys are the absolute best! read more

We have been coming here for several years. The staff is friendly, place is clean, ambience is inviting, and of course Kosta does an amazing job. Highly recommend! read more

Great experience. Highly recommend. Clean and organized. Friendly staff. Great for all ages.

So glad we found Dr. Kosta! He is an incredible dentist that is meticulous, detailed, honest and has a great sense of humor. I came here for a deep cleaning and 2 cavity filings, along with my two young boys ages 11 and 8. Both of the boys had a great experience with Dr. Kosta and his staff. The office is clean, organized and is following all the necessary safety protocols and more. I highly recommend Dr. Kosta for adults and kids. read more

Great staff. Everyone is helpful and friendly. Dr. Kosta is wonderful. He cares about his patients and doesn't try to sell you stuff you don't need. read more

Best dentist ever. Friendly staff. I recommend him to everybody. My Daughter refused to go to the dentist after her previous dentist was so rough. I got her to try DR. Konsta's and now she looks forward to going every 6 months. His entire staff is great. Thanks for the Service. read more

My visit was for the most part excellent with Dr. Kosta being thorough and understandable in his recommendations. The staff did mix up my chart with another patient, but it was resolved quickly once they became of the error. I would have like the dental hygienist to introduce herself, stating for example, good morning my name is __________ and I will be your dental hygienist today. Sincerely submitted. Robert Plotke read more

Everyone at Dr Kosta's office are friendly, professional and gentle with the dental work!!

Dr. Kosta and staff are AMAZING! They are friendly, fun to talk with, do exceptional treatments, really gentle and professional, and most of all...they genuinely care about you (me) as a person. My children and I love this place. read more

Five-star rating for five-star service. It was my very first time seeing Dr. Kosta's and his staff. The years of experience and great reviews is what drew me to him. I was quite impressed with my visit. The place was clean and orderly. Upon meeting doctor Kosta's I was greeted with a smile and great customer service by his staff. I went in for a Consultation/Exam, and left out with peace of mind knowing thru conversation (questions and concerns over dental work to be done and financial) that he's the doctor to cover all my dental needs, and the best part is that it's affordable. I would refer and recommend this doctor to friends, family and others. read more

My wife and I are so happy , They do a great job they provide excellent customer service . dentistry work on my family is amazing we would highly recommend this place to everybody , I've been to a lot of Dentist in my lifetime , and by far this place is the best . we drive from the valley to visit Dr Kosta & Staff read more

Best dentist ever!!! If you are looking for a great dentist contact Dr Kosta's in Simi Valley. You will not regret it. The staff is also amazing. read more

I have three years of always coming here for my check-up and cleaning and it's always a pleasure to come here. The staff is very friendly and I welcoming. read more

Great helpful staff, short waits, efficient care, Dr. Kosta was great about answering all questions.

i can't say better things about Dr Kosta! He has been our family dentist for over 3 years and he so amazing! He is fair priced, realistic and an overall good caring Dr. He so honest and the everyone at his office always have a smile on their face! Thanks Dr. Kosta! read more

Dr Kosta is a a very hardworking, sincere, and friendly dentist. He is very reliable and punctual. He works diligently and very focused.

This is my favorite dentist and group of hygienists in the world! It has taken me years to write this review only because I don't want to share them. Sadly, it has come time to let you all in on the very popular Dr. Kosta's office. The staff is friendly and accommodating. Dr. Kosta's always has a smile on his face and is always interested in my life the 2 times a year I visit him. Yes, you heard that correctly; I love the dentist office. I'm strange for admitting that; I've accepted it. Thank you guys!!! read more

We won't go anywhere else and I make sure to pass his info to friends that need a good dentist. Unlike the factory like ones in the area or anywhere else that tries to sell you a car to help cover overheard...Dr Kosta has your best interest in mind and will take care of you. His entire staff are the bees knees. So attentive, accommodating and like the doctor...great bedside manners. Not going to anyone else. Tip to new patients - they're PPO only, like most better dentists. Do yourself a favor if your spouse/significant other has dental ppo coverage - add them to yours and have them add you to their's. Double coverage cause it's worth it. read more

Great Dentist , including dental staff. My teenage daughter has had anxiety with dentists (even a basic cleaning) since she was young. I was super impressed with how gentle, communicative and overall amazing with her. The entire family goes to Dr Kosta and we love coming here. Highly recommend. read more

Always friendly and professional. Dr. Kosta's office and personally are super! I have been using Dr. Kosta's office since I moved to Simi Valley five years ago. I recommend them to anyone who is looking for a good dentist locally. read more

I provide negative reviews when I feel that I experienced negative service like in your dental office. I understand your grumpy respond when you get negative rating. I remember that I was told on the phone and at the office that the first exam and X-ray will be with no charge. As I already maintained, my total experienced at Dr. Kosta's office was unpleasant, the staff are unkind and you use antique equipment. And just so you know,, sometimes even "minority disappointed reviewers" are actually reflect the truth for consumers, by the way,, on Yelp,, the number of negative reviews about your dental office are not very minority as you claim,, OUCH! ZERO STARS! read more

Absolutely the best dentist. Dr Kosta is very gentle and understands my paranoia of dentist. From the very first visit after telling him of my fear of dentists, he listened and was so caring. We have been going there for years! Thank you so much Dr Kostas for helping me get over my fear ! read more

Wonderful dentist is Dr. Kosta! I brought my father here as I needed to find him a dentist that would be gentle and thorough. Dr Kosta is all that and more...he is meticulous, kind, makes you feel less nervous with his warmth and understanding. His office is lovely and everyone there is warm and empathetic. 5 stars all the way! read more

i didn't have a dentist and found Dr. Kosta ( Konstantinos Proussaefs, DDSoffice) by a referral. I don't do well at the dentist. I have severe gag reflexes and hyper-sensitive teeth. The office is close to me but I would drive 30 minutes for his services. The staff was very friendly. I got in promptly, and the Dr. was so patient and did an outstanding job. BEST service ever! They let me know all the costs and gave me lots of information to make decisions. I will recommend to all my friends and family. read more

The customer service is great and the staff is very kind and Welcoming! I was accommodated the next day due to an urgent request with no hassle. Very cozy office! read more

Just had my semi-annual check up and cleaning and once again Dr Kosta and his staff exceeded my expectations. The dedication of Dr Kosta and his staff always amazes me. No cavities but I do have to have a filling replaced. Chelsea thoroughly explained my options and they even fit me in for an appointment this week. Dentist fear? This is the doctor for you! read more

I needed to find a dentist a while back because the health insurance through my work didn't cover my old dentist. Despite having a rather high pain tolerance, I get nervous when I go to the dentist. Generally I don't like the feeling of a pick scraping underneath my gums as that isn't very fun. I'm just going to say I got lucky! When I went for an appointment with Dr. Kosta back in December, I was pleasantly surprised how personable, kind, and professional everyone was. When Dr. Kosta came to talk with me, he was very nice, thorough, and was able to make some suggestions without making me feel like I take horrible care of my teeth (which I certainly do not) whereas I've had experiences with dentists who end up lecturing me about something or another and I leave feeling bad about myself. I now suggest him to anyone who needs a dentist. Like the other reviewer said on here, it was definitely "the best dental appointment I've experienced in years." read more

I love Dr Kosta he is A very honest and sincere dentist i am so glad i found him :) his staff are very welcoming and very helpful glad to say I've found my Dentist :) read more

I got recommended this dentist by a friend. I don't have dental insurance and Dr. Kosta has an extremely affordable "Kosta's plan". Includes 2 cleanings & 2 x-rays for the year! He was extremely thorough & very good at what he does. We all hate the dentist, let's be real. But he was gentle and didn't even hurt me once. Got 2 cavities filled too & since I had their "Kosta's plan" it was discounted a lot. I'd absolutely recommend him to anyone! read more

Entire staff is incredibly friendly and very knowledgeable. They know how to handle insurance properly to keep my costs low. I highly recommend. They have a very flexible schedule and have zero issue with making appointments. read more