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If you experience any difficulty in accessing any part of this website, please feel free to call us at (302) 475-4102 or email us at info@firststatesmiles.com and we will work with you to provide the information or service you seek through an alternate communication method that is accessible for you consistent with applicable law (for example, through telephone support).
I have tremendous passion for our profession and the patients we serve. I feel privileged to be part of a profession that makes such a profound difference in people’s lives. My staff is vitally involved in this process and helps support our patients at every step of their journey. Straightening teeth is part of what we do but the entire GNO team strives very hard to help people enrich their overall lives
We view our practice like one big happy family. We reach out to help each other and our patients in any way possible. We cherish the friendships we develop and constantly strive to encourage our patients to be the best that they can be. Our office is a warm, nurturing, fun place to be. There is no other profession we would rather be in. We love what we do! That’s what you can expect from GNO
Dr. Nista’s personal interests include golf, fishing, skiing and cooking. He is an active member of the Knights of Columbus and is currently participating in Creative Mentoring. He, too, is a past President of the Delaware State Dental Society. Dr. Nista is married with two children, Jason and Sarah. Being the oldest of five children, he particularly enjoys working with young children
Dr. Nista attended dental school at the University of Pittsburgh, completed a General Practice Residency at the Veterans Administration in Dayton, Ohio and completed his orthodontic training at Albert Einstein Medical Center in Philadelphia. He has had extensive training in surgical jaw procedures. Dr. Nista joined Dr. Greeley in 1990 and a special relationship was born!
Reviews
Rating 4.9 out of 5 based on 266 reviews
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newest oldest highest lowestLaMar Bruton
a year ago
Absolutely phenomenal staff! Everyone in the office was personable, welcoming, patient, and most importantly informative. I would highly recommend Greeley & Nista.
Elizabeth Sharp-asiyo
a year ago
Greeley & Nista Orthodontist is an awesome practice. So Glad to have a great treatment Coordinator (Maria) who is Welcoming and very knowledgeable. She answered all my questions and set us up for treatment. I love the way the treatment staff treat my children and it's always a pleasant experience. The scheduling crew has been amazing because our family schedule is rigid- Jasmine, Kelly and Becky have been so kind and patient with my numerous calls ( with having 2 siblings with repair needs etc) we are more than halfway through treatments and have been accommodated every time we request an appointment. The flexibility was the biggest and main reason we Choose GNO. Keep up the great Job! The price is fair for great quality work and I just can't wait for the final results.
Sarah Denzmore
a year ago
I have nothing but positive things to write about this office. I first brought my oldest son to Dr. Nista about 3 years ago. Dr. Nista and his staff put us all at ease and made the experience an extremely comfortable one. I was very impressed and pleased with them, that I brought my other two children to them. The staff is always so pleasant and kind. Dr. Nista takes the time to explain the treatments for your child then makes the kids laugh with his "dad" jokes. I highly recommend them. And Dr. Nista: Why is Cinderella bad at soccer? Because she's always running away from the ball! We got jokes too
Family Casalvera
a year ago
My daughter received wonderful care at Greeley and Nista. Highly recommend!!
Courtney Johnson
2 years ago
Great place... excellent work and professional staff!
Tarayja Brooks
2 years ago
My experience with Greeley and Nista was great! All of the employee are examples of what great customer service is! Dr Nista is so personable he made me very comfortable and seems to remember all his clients which makes you feels special! I would recommend this place to anyone!!
wanyegiakai miller
2 years ago
The staff was ammmmmmaaazinggg everyone smiled , and greeted me . Maria was Soo good answered all my questions and or worries . She was great . The place is clean . I highly recommend . Thank you GNO family
Keirra Murray
2 years ago
They staff was very friendly and made sure I understood all the procedures my kids was getting.
Jacqueline Pate
2 years ago
Such an awesome and amazing orthodontist and office. Very beautiful and pleasant staff. I am always in and out quickly but my services are not minimized. I truly appreciate how well my Invisaligns are working. I can actually see some major changes in my smile and I am so excited! Only 25 weeks to go to my perfect smile!!! Thank you so much for everything! Jacquee'
David Dooley
2 years ago
Always professional and pleasant. Happy staff and doctor = Happy patients.
Ronnika Baker
2 years ago
I learned of GNO from a friend, I got my braces done here and now my 2 of my children have braces by GNO, staff is friendly with teenagers and welcoming. The coolest Doctor ever, w/ swag how color coordinates tie with clothes and sneakers.
Angela King
2 years ago
What a great group of people. Everyone is very nice and professional. They get you in and out. I would recommend them to anyone who needs orthodontics.
Ayo Oduneye
2 years ago
So far, very accommodating and detail oriented. Busy at times but very organized.
Dr. Margo Lewis-Jah PhD, LCSW,MEd, MOML
2 years ago
Both of my children have used GNO. We love the professionalism of the doctors and all the staff. They have created an environment that helps you feel comfortable, welcome, and valued. More Details
Rio Jewel Spa
2 years ago
Customer service excellence!!
Beaba Gonzalez
2 years ago
The entire start to ending was awesome my daughter loves it there they treat you really nice and sweet I highly recommend this place to anyone
Phoebe Bosma
2 years ago
My son had a great experience! Love the kid friendly fun added in! (brace bucks). Easy to make appointments! Best price for our family when compared to others! Dr. Nista hs a fun personality! Thank you!
Neysa Smith
2 years ago
It was wonderful seeing the staff, Kathy and Dr. Nista again after many years. The service is still the ultimate. The staff are pleasant, kind and caring!
ashley wilson
2 years ago
I left Greenly Nista Orthodontics feeling great! Maria was very friendly and helpful!! She answered all my questions and made me feel very welcome and happy with my visit! The doctor also made me feel very happy with my decision to come into there office today! I'm so excited & can't wait to start my new journey!!
J P
2 years ago
Very friendly and made me feel very comfortable in my first appointment
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