At Morrison Dental Group in Williamsburg, VA, we believe every smile deserves personalized attention and high-quality care.
Our doctors and team combine advanced training with genuine compassion to provide comfortable, comprehensive dentistry for patients of all ages. We are proud to offer a wide range of treatments while building lasting relationships with the families we serve. Get to know the trusted providers who make your care their priority.
Our Doctors
Dr. Robert F. Morrison
Clinical Director
Dr. Robert F. Morrison is the owner and founder of Morrison Dental Group, serving families since 1992. After completing his service with the U.S. Navy, he opened the practice with a mission to provide genuine and compassionate care for the families of the Hampton Roads region. Over the years, the practice has grown to incorporate advanced dental technologies while continuing to provide patient-focused care for individuals and families.
Dr. Morrison earned his Bachelor of Science degree in chemistry from Southern Illinois University in 1979, followed by his Doctor of Dental Medicine degree in 1982 from Southern Illinois University School of Dental Medicine. He completed a post-doctoral residency in Comprehensive Dentistry and went on to serve as a dental officer ashore and afloat from 1982–1991, including as department head aboard the U.S.S. Guam and head of the Pediatric Department at Norfolk Naval Station.
Dr. Morrison is married to Alison, who serves as Morrison Dental Group’s CFO. They have two sons: Frank, a Lieutenant Commander in the U.S. Coast Guard, and Alex, who is the group’s Chief Compliance Officer. In his spare time, Dr. Morrison enjoys fishing on the Chesapeake Bay, kayaking, and restoring British MG cars. He is also a member of the ADA, American Academy of Sleep Medicine, Virginia Dental Association, Peninsula Dental Society, and the International College of Dentistry.
Dr. Stephen L. Murphy
Dr. Stephen L. Murphy joined Morrison Dental Group in 1996 after retiring from the United States Navy. Dr. Murphy and Dr. Morrison served together in the Navy while stationed in England, and they have remained good friends and colleagues ever since. Dr. Murphy brings a wealth of knowledge and experience to the practice, as well as a great deal of compassion, which is much appreciated by his patients.
Dr. Murphy is a graduate of Sacramento State College with a Bachelor of Arts degree. He attended the University of California, Santa Barbara Masters of Scientific Instrumentation Program and is a graduate of the University of California, Los Angeles School of Dentistry. He served as a naval aviator and as an active duty Naval Dentist Officer both ashore and afloat. Dr. Murphy attended the Advanced Clinical Program in General Dentistry at the Naval Regional Dental Center in Norfolk, Virginia. He also attended Command and Staff College at the United States Marine Base in Quantico, Virginia.
Dr. Murphy is on the Board of Advisors for Olde Towne Dental Clinic, a volunteer dentist for Physicians for Peace in the Dominican Republic, and a volunteer at Give Kids A Smile.
Dr. Murphy is married to Marcia. They have 4 children: Kelly, Heather, Eric, and Sean, all of whom are married. He is active in the community. He enjoys classic British car restoration and is an avid cyclist.
Dr. David J. Maharty
Dr. David J. Maharty strongly believes in helping others whenever possible and enjoys boosting patients’ self-confidence. That’s why the dental field is a perfect fit for him. Dr. Maharty joins the MDG family with over 20 years of experience and has been able to see how dentistry can change lives for the better. He specializes in dental implants and enjoys seeing his patients have the smile they have always wanted.
Dr. Maharty grew up in Wilkes-Barre, PA, and was recruited in high school to play football at the college level but chose academics over sports. He has a Bachelor of Science from the University of Scranton in Pennsylvania and then went on to the Temple University School of Dentistry in Philadelphia.
Dr. Maharty enjoys being a member of a close-knit community that offers many opportunities for his children. He is married to Kelly, his high school sweetheart from GAR Memorial HS. Together they have three daughters: Morgan Elizabeth, Madison Lynn, and Maleah Audriana. The family has two dogs: Keda, a Goldendoodle, and Khloe, a Golden Retriever rescue. In his spare time, Dr. Maharty enjoys going on vacation with his family, attending sporting events, watching college football, tailgating, coaching softball, traveling, and spending time with friends.
The Maharty family originated a Sports Scholarship Memorial Fund at Avalon Women and Children’s Shelter so that the children there can play recreational sports. The family believes in helping others and giving children the opportunity to grow physically, mentally, and emotionally through team sports.
Dr. Loren Masuoka
Dr. Loren Masuoka grew up in Portland, Oregon and attended Lewis and Clark College where he studied Biology. After completing his undergraduate degree, he attended Oregon Health Sciences University where he received his DMD.
After completing dental school, he did a fellowship in general dentistry here in Virginia for one year. Dr. Masuoka spent over 30 years in the Navy before joining the Morrison Dental Group team.
He was first drawn to dentistry because he had an interest in the medical field during undergrad. He saw the type of care he could provide to patients as a dentist and has been driven by that desire to care for people ever since. He loves being able to help someone feel better and improve their dental health, as well as their overall health.
Dr. Masuoka is married to Lorraine and they have two kids – Sawyer and Camden. They are a very athletic family and enjoy running, hiking, travelling and cooking. They also have a corgi/chihuahua mix named Baxter. Dr. Masuoka describes himself as friendly, caring and talkative. He coached youth lacrosse for five years, and both his father and sister are dentists.
Dr. Rafael Siqueira
Periodontist
Originally from Recife, Brazil, Dr. Rafael Siqueira brings a strong background in research, education, and advanced dentistry to Morrison Dental Group. He earned his dental degree in 2010 from the University of Pernambuco, followed by a Master’s in Implantology. He then completed a PhD at the Federal University of Pernambuco, during which he conducted research at the University of Michigan. Later, he returned to Michigan to complete a three-year residency in periodontics.
Dr. Siqueira has published more than 30 scientific articles in international peer-reviewed journals and authored five book chapters, earning recognition for his work. His passion for dentistry was inspired by his parents, both dentists, and by observing the lasting impact his father had on patients and students. Today, Dr. Siqueira proudly carries forward that same dedication as a dentist, educator, and researcher.
Outside of work, Dr. Siqueira enjoys playing tennis, traveling, and discovering new restaurants. He is fluent in Portuguese, English, and Italian, and continues to improve his Spanish. He and his wife, Renata, a lawyer, recently welcomed their first child, Thomas, and they look forward to adding a dog to their family soon.
Dr. Joseph Abaid
Dr. Abiad grew up in Amman, Jordan, where he also attended dental school at the University of Jordan. He completed his residency at a Cleveland, Ohio, general practice within the MetroHealth Hospital, where he was the chief resident, and in only his second year of residency.
What drew him most to dentistry was that, as a kid, he would go to the dentist and really enjoyed it, and was always very intrigued. So from those moments, he always knew he wanted to be a dentist. He enjoys his work as a hobby, and not just work, he loves being in the office and engaging with patients and his team.
His favorite part of dentistry has to be placing implants, as he did a one-year program at Rutgers University focusing on just that. Dr. Abiad’s wife, Natalie, is also in dentistry as a pediatric dentist. They have one daughter, Sophia, and a son on the way.
In Dr. Abaid’s free time, he enjoys being outdoors, traveling, and he loves playing and watching soccer in his free time. He enjoys soccer as he is a big Madrid fan. Dr. Abiad describes himself as very outgoing, as well as being a huge family man. A fun fact about him is that Christmas is his favorite holiday. He is a member of the ADA and the American Academy of Implant Dentistry.
Our Team
Carol Dunkle
Regional Manager
Bio Coming Soon!
Jamie Barnes
Jamie Barnes is the friendly face that helps keep our Norge office running smoothly. As an Administrative Assistant, she greets patients with a warm smile and makes sure everyone feels welcomed and supported from the moment they walk through the door. Originally from Hampton, VA, Jamie’s career path began in IT and digital forensics, but she soon discovered her true passion was working with people, which led her to the dental field.
Jamie loves building connections with patients and takes pride in creating a positive, organized, and comfortable office environment. Outside of work, she enjoys traveling, hiking, fishing, and spending time with her large family. With her upbeat personality, caring nature, and dedication to helping others, Jamie is a valued and trusted part of the Norge team.
Compassionate Care From A Trusted Team
The doctors and team at Morrison Dental Group are committed to helping patients feel comfortable and confident at every visit. From preventive care to advanced treatments, they work together to provide personalized dentistry for every smile. Families in Williamsburg, VA, can rely on their expertise and compassionate approach. The team looks forward to welcoming you and helping you achieve your healthiest smile.