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Richard Y. Liu, DMD, MMSc

Using an artistic and gentle approach to improve the lives of his patients.

Dr. Liu lives in the seacoast of New Hampshire with his wife and two sons. New Hampshire dentists have voted Dr. Richard Liu a “Top Prosthodontist” in the state for 2017 – the ninth time the Harvard-trained dentist has received this recognition from his peers.

With the sensitivity of an artist (you can see his watercolors on his Newington office walls), the gentle Dr. Liu uses his craft to make people look and feel their best.

“Many people don’t realize the degree to which their teeth affect their appearance. A person’s teeth must relate properly to their facial profile. We are here to help you and make you feel comfortable.” – Dr. Liu

At his successful dental practice, Evergreen Dental Care, Dr. Liu performs top-notch family dentistry as well as specialty services such as bridge and crown restorations, implants, bonding, veneers, Zoom one-hour whitening, Invisalign®, CEREC crowns and more.

In addition to treating patients, Dr. Liu also instructs dental students at Harvard and Tufts. A clinical instructor at Harvard School of Dentistry and assistant dental professor at Tufts, Dr. Liu is shaping the next generation of dentists that come from around the world.

Dr. Liu is well known in the dental community and receives regular requests to speak all over the globe. The recognition and awards keep rolling in, but Dr. Liu humbly brushes off the accolades. He’d much rather be working in his dental practice – helping his patients achieve healthy, beautiful smiles. He is also bi-lingual; he is fluent in both English and Mandarin.


  • Studied dentistry at the University of Pennsylvania
  • Received three years of advanced specialty training at Harvard School of Dental Medicine
  • Studied the biomechanics of dental implants and tissue engineering at MIT


  • Clinical Assistant Professor at Tufts School of Dental Medicine
  • Clinical Instructor at Harvard School of Dental Medicine
  • Associate Professor, Department of Prosthodontics, Harvard University
  • Lectured at an international dental conference off the coast of South Korea
  • Spokesperson for the prestigious American College of Prosthodontists
  • Received NH Dental Society’s first Charles M. Lambroukos Award in Teaching Excellence
  • Numerous awards and certificates for implant dentistry and cosmetic dentistry




Your Experienced Dental Team

Our team is committed to developing close relationships and building trust by offering compassionate dental care in Newington and Portsmouth, New Hampshire. If you want to meet with our dentist and team members at Evergreen Dental Care, please reach out today by calling 603-436-9200. We hope to see you soon for a visit with Dr. Richard Liu.

Robert Bardell – Office Manager
Originally from Exeter, NH, Robert now lives on a farm in Maine. His interest in dentistry stems from how oral health can play a factor in overall health. This knowledge led him to choose dentistry because of the lack of oral health awareness in his communities.

Robert graduated from Plymouth State University and has over five years dental office management experience. In those years, he says the best part of his job is bringing smiles to the faces of our Evergreen patients.

Robert has an active life away from our office. He enjoys spending time with his family and friends. Plus, he works on his farm where they have horses, chickens and dogs.



Casey Wachowiak – Assistant Manager
Casey has been with our office since November 2017 and is currently attending Southern New Hampshire University for her bachelor’s degree in public health. She enjoys the connections we are able to form with patients and loves seeing them walk out with a smile on their face. In her spare time, Casey spends time with her family being outdoors, fishing, hiking, boating and participating in sports. She also loves supporting her favorite sports teams: The Patriots, Red Sox, Celtics and Bruins.


Becky Rawson – Dental Hygienist
Becky’s hometown is Stratham, NH, so she is a New Hampshire local. Before pursuing a career as a dental hygienist, she had one year’s experience as a dental assistant. Becky has certificates as a dental assistant, a dental hygienist and in local anesthesia.

She really enjoys educating patients about their oral health and making a real difference in their lives. Her aim is to take patients on a journey from poor oral health to a sparkling, healthy white smile.

When not in the office, Becky takes care of her new baby girl and enjoys cooking, dancing, traveling and helping on the family farm.


Nicole Maurier – Dental Hygienist
Born and raised in Exeter, NH, Nicole is one of our skilled dental hygienists at Evergreen Dental Care. She received her NHTI Associate of Science degree in Dental Hygiene in 2013 and is an integral part of our office.

Nicole has a real passion for oral care and wants to help patients change their hygiene habits for the better. She is always happy to help patients and answer any questions you may have.

Away from Evergreen Dental Care, Nicole looks after her three-year-old son. She enjoys snowmobiling, going to the beach and camping with her family.


Cassidy Banville – Dental Assistant/Hygienist
Cassidy has a bachelor’s degree in dental hygiene and joined our practice in 2018. Her favorite part of her job is the ability to help others and being able to touch patients’ lives in a positive way. She also excels at communicating with patients and educating them on proper dental health and the prevention of disease. Cassidy is the middle child of two sisters. Her hobbies include reading, traveling, skiing and running.


Cassie Ritterbach – Dental Assistant
Beginning in October 2018, Cassie has been wonderful in treating clients like they are family and making their experience with us as positive as it can be. She enjoys caring for our patients and watching our doctors help people with their smiles. Cassie has a daughter with the typical sassy and fun attitude of a toddler. In her spare time, she rides horses (she also owns one), paints pottery, hikes, gardens and explores tide pools at the beach with her daughter.


Check back soon to meet Dainya!