“Dr. Rich Kobak is the consummate Dental professional along with his wonderful and caring staff. Your dental care is provided for in a beautiful, modern, state of the art office designed for your every comfort. Truly a dentist’s Dentist.”

Bert Kohn, D.D.S.

Thank you for the kindness that you extended to me during the period of my implant treatment. From the moment I walked into your dental office until I left, the staff was continuously warm and friendly.

Don’t be surprised if I pop in on occasion to say “hello”.


Miriam B.

You are such a nice man. Thank you for meeting me at the office on Thursday night. You are a life saver and I am so grateful.

Warm regards,

Jackie K.

Not only do you have “Golden Hands”, but a “Heart of Gold” as well. Just a note to thank you and to let you know how much happiness you’ve brought. Thank you again,


Judy B.

Just wanted to let you know we moved from Long Island to a suburb of Albany, NY. Things are good except we lost our favorite dentist.

We will try and make appointments on our visits to Long Island. Thanks for everything and we miss you already.

With gratitude for your outstanding professionalism,

Janine B.

I wanted to express my gratitude for being there for me on Sunday when I had a dental emergency. I value your time and would have never called your emergency service to contact you at home unless it was extremely urgent. You returned my call so promptly (minutes seem like hours when you are holding your front tooth in your hand) and made me feel calm and at ease with this dilemma.

Words cannot express how much it meant to me that you met me, with your two beautiful daughters, at your office on a Sunday morning to bond my tooth. I appreciate all of the time you spent preparing the tooth to make the best fit possible. Your dentistry is gentle, and the quality of work is superior. I feel so grateful and blessed to have you as my dentist.

Your compassion and kindness will never be forgotten.

Laura G.

Arthur is out of the hospital today, and recovered very well. We will be seeing Dr. Goldberg on Monday afternoon.

There is no way we can express our feelings of gratitude that would be enough, for your wonderful help last Saturday afternoon.

By having us come to the office so that you could examine Arthur, we feel that you saved his life. Arthur is a caring, compassionate person who helps others, and has a lot to contend with in his life, though he doesn’t have Downs Syndrome.

Many thanks again,

Charlotte and Abe F.

One of the happy lessons I learned from my medical experience is that there are some very special people out there- I feel so very lucky and appreciate to know you, because of your skill and your kind, giving nature!! Without even knowing it you dispel a lot of the fear-

Thanks you so much,


I just wanted to thank you for your consideration in treating my mother in law. She was visiting after my father in law passed away and a crown falling out was the last straw for her.

Your prompt and thoughtful manner and considerate approach helped ease an otherwise impossible moment.

Our heartfelt thanks,

Allyson S.

I’ve been Dr. Kobak’s patient for many years, even though he isn’t local to where I live. When you find a dentist who is a perfectionist (and who doesn’t want THAT quality in a dentist?), then it’s worth the trip.

But I was inspired to write this testimonial when Dr. Kobak extended himself to help my son in an emergency. Dan lives in Georgia but was in New York City for his wedding. The days leading up to the wedding were packed with last minute meetings and things to do. When Dan announced that he either lost a filling or possibly chipped his tooth, I called Dr. Kobak. Dan had a small window time of when he could make it to the office in Syosset, and even though Dr. Kobak’s was fully booked, he offered to stay to take care of my son’s problem. This was late in the day before the July 4th holiday. When I called the office to let them know that Dan and I were stuck in traffic on the Long Island Expressway, I was reassured that they would wait for us.

Forty-five minutes late, we finally arrived.

Not only did Dr. Kobak prove himself yet again to be a fine professional, but he also was a kind and generous man at a time we really needed it.

Steve Rosenberg


Our Google Places Reviews

"Dr. Diamantakis was one of the kindest and most caring dentists that I have ever visited. I felt very comfortable while he was working on my teeth. He was extremely professional, gentle and I didn’t feel any pain. He let me know exactly what he was going to be doing so I knew what to expect. I felt very relaxed during my visit. Overall visiting the office was a great experience. When I walked in I didn’t have to wait the dentist was ready to see me immediately. I had a few issues with my insurance and Heather at the front desk was super helpful with working out my insurance issues and getting it all back on track. Can’t wait for my next visit."

★★★★★ - Evangelia Diamantakis

"Dr. Diamantakis is an incredible dentist. He made me feel extremely comfortable despite how anxious I am about dental visits. He is so gentle that I didn't even realize when he was giving the anesthesia! The office is beautiful and very clean. The staff and other doctors are just as fantastic as Dr. D. I fully trust them with all my dental needs and give them my highest recommendation!"

★★★★★ - Erin Gearity

"I waited years to find a dentist. My daughter suggested Dr. Berk at Syosset Dental. Being a total dental phobic, she assured me this was the place for me. I was amazed from the first phone call to make the appointment. Kim and Heather were truly welcoming. When I walked into the magnificently designed office I was very impressed. The decor is very calming and comforting. Dental assistant, Denise, was very considerate with each x-ray. Dr. Berk was everything my daughter said he would be. He is indeed, gentle, compassionate, and most of all, reassuring. He gave me options for my treatment and explained every procedure with detail. One of the best parts was getting a much-needed cleaning on the first visit. With bleeding gums, I was very concerned and not happy with my smile. Joanne was so thorough and again, assured me that ""we will get through this."" I am scheduled to go back for treatments and I will go, not so much as the dental phobic I have always been and always will be, but as a more confident person getting assistance from the very professional, compassionate and comforting personnel of Syosset Dental. Highly recommend."

★★★★★ - Donna Jean Donahue

"I'm writing this as a former dental hygienist who used to work for Dr. Kobak and still use him to this day for myself, my family and recommend him to all my family and friends. I can tell you from a professional standpoint that his work is impeccable. He's a perfectionist and a highly skilled dentist with attention to detail. But beyond that he cares deeply for his patients. His staff is also very friendly and helpful. You will not find a better dental practice in the area."

★★★★★ - Lea Avroch

"Dr. Diamantakis is the best. Caring, thorough and personable. Difficult to find those qualities in healthcare providers when typically driven by patient panel size and a tight schedule. My comments apply to Dr. Kobak and the entire stellar staff at Syosset Dental as well. They are a cut above any other dental practice."

★★★★★ - John Tabone