Dentist in Great Neck, NY

About us

At North Shore Cosmetic and Implant Dentistry, we are dedicated to providing top-notch dental care services that prioritize both aesthetics and functionality. Our team of skilled and experienced dentists is committed to helping you achieve a beautiful and healthy smile.

Dr. Won S. Kwag, DDS

MEET DR. Won S. Kwag (“Dr. Warren Kwag”)

Dr. Kwag is known for his caring nature and gentle touch, which make even the most nervous patients comfortable. Often, his patients would take a quick, power nap while under his treatment care!

His love for dentistry started early in his life. He grew up watching his father and uncle practice dentistry. Dr. Kwag often followed them on dental volunteer trips to help those in need, which influenced him to do the same. Dr. Kwag helps his patients in all areas of dentistry: from prevention to dental emergencies, from cosmetics veneers, crowns and bridges to more complex forms of dental implants, sinus lifts, gum lifts – all with a soft
manner and kind nature. Dr. Kwag is passionate about providing exceptional care to his patients and ensuring they have a pain-free, positive experience that he always wanted to provide to his patients. He is also very good with treating young children, and often goes on an outreach to provide dental health education.


Dr. Kwag loves to learn! Anyone who knows him knows he is passionate about enhancing his education and scope of knowledge, both professionally and personally.
He is constantly learning and staying up to date on all of the latest techniques and technologies dentistry has to offer.

Dr. Kwag earned his Bachelors of Science degree in Biology at SUNY Stony Brook, graduating with Cum Laude honors. Then, Dr. Kwag attended New York University College of Dentistry where he made his lifelong dream of becoming a dentist a reality. He consecutively completed a residency program in Queens where he received additional training in implantology and oral surgery. In his quest to provide outstanding, advanced dentistry through science, Dr. Kwag furthered his education with classes from the prestigious Kois Center in Seattle. Soon, he will be recognized as a Kois graduate. Dr. Kwag also completed rigorous implant courses from Hiossen Advanced Dental Implant Research and Education Center and Gangnam International Implant Academy.


  • American Dental Association
  • New York State Dental Association
  • Nassau County Dental Society
  • Academy of General Dentistry
  • American Academy of Clear Aligners


Born and raised in South Korea, Dr. Kwag is fluent in both Korean and English. Moving to New York in order to pursue his dream, he found a new love for traveling. Alongside his college sweetheart and wife, Janet, and his two beautiful children, who are his world, Dr. Kwag enjoys exploring different cities, activities and cuisines. When he’s not out with his family, he can be found playing golf, jogging or sleeping under a tree on a warm summer evening. Oh, he likes to sing soft pop as well.

Dr. Jonathan M. Richter, DDS

Bio Coming Soon!