Our Doctors
Dr. Robert F. Morrison
CEO and Clinical Director
Dr. Morrison founded the practice after returning from being stationed with the U.S. Navy in England with the goal of providing genuine and compassionate care for the families of Williamsburg and the greater Hampton-Roads area.
The practice has grown to incorporate some of the latest dental technologies as well as continue to provide extensive and patient-oriented care for families and individuals. With a great team of Williamsburg dentists and staff, the offices of Morrison Dental Group pride themselves on the personal attention and skill that they can offer their patients. Dr. Morrison graduated from Southern Illinois University with a Bachelor of Science degree in Chemistry in 1979. He attended Southern Illinois University School of Dental Medicine, graduating in 1982, completing a post-doctoral residency in Comprehensive Dentistry. He served as a dental officer ashore and afloat from 1982-1991 in the U.S. Navy and was the dentistry department head afloat the U.S.S. Guam. Dr. Morrison was head of the Pediatric Department from 1987-1988, Dental Clinic, Norfolk Naval Station, Norfolk, Virginia.
Dr. Morrison is married to Alison, who serves as Morrison Dental Group’s CFO. They have two sons: Frank, a LCDR in the United States Coast Guard and Alex, who also works with Morrison Dental Group as the Chief Compliance Officer. In his spare time, Dr. Morrison is a dedicated family man and enjoys fishing on the Chesapeake Bay, as well as kayaking and restoring British MG cars.
Dr. Morrison is a member of the ADA, American Academy of Sleep Medicine, The VDA, the PDA, and the International College of Dentistry.
Dr. Rafael Siqueira
Dr. Rafael Siqueira is originally from Recife, a beautiful town on the coast of Brazil. He attended the University of Pernambuco in Brazil and graduated from dental school in 2010.
He then went on to complete a Masters of Implantology which is similar to a US residency program. After completing that, he joined a PhD program at the Federal University of Pernambuco which sent him to the University of Michigan to do research for his master’s thesis. Once he completed his PhD, he headed back to Michigan School of Dentistry for a 3-year residency in Periodontics. During his time in school and residency, he was able to publish over 30 scientific articles in international peer reviewed journals and write five book chapters. This resulted in a few awards over the years.
Dr. Siqueira’s interest in dentistry started to develop very early in his life by watching his parents who are both dentists. He observed his father teaching students and treating both students and patients with compassionate care. He witnessed a few instances where patients were moved to tears by the results of his father’s care and students whose lives were so strongly impacted by the mentorship his father provided on their path to become a Periodontist or Implantologist. Dr. Siqueira soon realized he wanted to have that same positive impact by being a dentist, educator and researcher.
Dr. Siqueira describes himself as not only family-oriented and very sociable, but also easy-going and calm. He loves being with friends, having a good time and sharing great food. He is typically very optimistic. He is married to Renata, a lawyer, who just recently gave birth to their first child, Thomas. They do not currently have any pets but hope to add a dog to their family in the near future. Dr. Siqueira is a big sports fan, food lover and loves to travel. His hobbies include playing tennis, watching sports, exploring new restaurants, travelling and meeting new people, and learning new languages. A fun fact about Dr. Siqueira is that he speaks his native language, Portuguese, as well as English, Italian, and can communicate quite well in Spanish. He is currently taking a Spanish course to improve his fluency.
Dr. Abdi
Dr. Abdi was drawn to dentistry because she always noticed people’s smiles. Her husband, Ali, is also in the medical field and was a big inspiration to her becoming a dentist. She loves the cosmetic side of dentistry.
Dr. Abdi was born and raised in Algeria. She attended college and dental school in Algeria. Her program placed a lot of emphasis on radiology and pathology. She completed a residency at the University of South Carolina. Since then, she has volunteered at many of the dental clinics in and around her community, including Missions of Mercy, as well as the charity she founded in Algeria called The Hope Foundation. Dr. Abdi is a member of the American Dental Association.
Dr. Abdi and her husband have two sons, Feris, 9 and Wassin, 13. Dr. Abdi describes herself as being very passionate, outgoing, and friendly. In her free time, she loves playing soccer with her kids and making jewelry. She also loves to travel. She speaks French, Arabic and Berber fluently.
Dr. Ahmed Habeeballa
Dr. Ahmed Habeeballa is a skilled dentist with a passion for delivering exceptional care. Born in Sudan, Dr. Habeeballa spent his early childhood in Ireland, completed his middle and high school years in the UAE, and moved to the United States in 2016.
He pursued his dental education directly after high school at the National Ribat University in Khartoum, Sudan. Dr. Habeeballa then further honed his skills with a one-year fellowship in urgent care and two years of advanced education in general dentistry (AEGD) at the University of Rochester in New York.
Dr. Habeeballa is particularly passionate about oral surgery, enjoying the immediate impact he can have on patients' lives, whether relieving pain or restoring confidence. He looks forward to engaging in community outreach, especially in emergency dental care for underserved populations.
Outside of work, Dr. Habeeballa values family and enjoys time with his three children, Nour, Yousef, and Eman. His drive to provide the best care for his patients is fueled by his desire to make a lasting difference in their lives, while his family serves as his primary motivator. In his free time, Dr. Habeeballa enjoys traveling, socializing, and occasionally playing video games.
As a dedicated professional, Dr. Habeeballa is committed to continuous learning, patient comfort, and integrity in all that he does.
Our Staff
Priscilla Hansen
Regional Director
Priscilla Hansen joined Morrison Dental Group in 2013 as an office coordinator after spending 10 years working in Human Resources. She was born in Panama to military parents and grew up in rural Pennsylvania.
She moved to Williamsburg in 2012 due to her husband being stationed at Ft. Eustis. After spending four years as an office coordinator, she became a Regional Manager for our south side offices. Priscilla most enjoys the dental field because of how much she cares for our patients. She loves being a part of their emotional journey as they come into the office in pain and leave with instant gratification. In her spare time, Priscilla enjoys spending time with her family and cheering on Penn State. She is most proud of the time she is able to give back to the community volunteering for things such as Girl Scouts, Smiles for Heroes, and many more!
Allison Butler
Office Coordinator
Allison is from Mechanicsville and is happy to be serving the community where she grew up! She has worked in the healthcare industry for many years, initially getting her start working in an assisted living facility, specifically with Alzheimer’s patients.
She eventually moved over to the dental field, where she loves building relationships with patients and being able to help them achieve the smile they are looking for. Allison has two little boys and enjoys spending her time with them fishing, hunting, being on the river, and hanging out at the baseball field.