Island Children's Dentistry

our pediatric & Orthodontic dental Practice

Girl Smiling - Island Children's Dentistry & Orthodontics

our pediatric & Orthodontic dental Practice

We’re a Pediatric & Orthodontic Dental Office …with a twist! Right in the middle of Tysons Corner.​

Island Children’s Dentistry, is the latest —and we believe the best— pediatric dental practice serving Northern Virginia (Vienna, McLean, Oakton, Tysons Corner, Falls Church, Great Falls) and headed up by Dr. Gema Island, a gifted pediatric dentist and caring Mom herself.

A great dental practice designed just for kids —and fun too. We think this combination is a much better way to keep your children’s smiles the brightest and happiest ever and to give you the peace of mind knowing your kids have the best dental care available.



Dr. Island with a patient - Children's Dental Health - Island Children's Dentistry & Orthodontics

Meet Our Dental Team

At Island Children’s Dentistry, you can be confident in the pediatric and orthodontic dental practice you have chosen for your child. Drs. Gema Island and Allison Lonneman each have specialized training in pediatric dentistry. Dr. Bob Marzban is an orthodontist who is trained in malocclusions and dental crowding and Dr. Nefeli Vasilakou is a Diplomate of the American Board of Orthodontics who believes that a beautiful smile can change lives.

Dr. Gema Island - Island Children's Dentistry & Orthodontics

Dr. Gema Island

Pediatric Dentist

Dr. Gema Island is a pediatric dentist, a Diplomate of the American Board of Pediatric Dentistry, a Fellow of the American Academy of Pediatric Dentistry, and a member of the American Dental Society of Anesthesiology. Dr. Island founded Island Children’s Dentistry in 2014. She’s dedicated to providing the highest quality of dental care in the most gentle, positive, and enthusiastic manner possible.

Dr. Island combines her academic background, research experience, clinical skills, and mother’s touch to deliver the best to her little patients and their parents. Dr. Gema obtained her Board certification in 2006 and did 3 years of residency at TUFTS University in Boston, MA. While at TUFTS, she received the prestigious Bates Award for her postgraduate research, and, in her senior year, she won the Aesthetic Dentistry Challenge. She has published articles in peer-review journals and has lectured nationally and internationally on different topics and participated in the Infant Oral Care and Prevention of Early Childhood Caries Project at San Francisco General Hospital.

Island Children’s Dentistry is committed to delivering the highest quality of care using the latest techniques and equipment. Dr. Gema has a special permit by the State of Virginia to provide conscious and IV sedation to her anxious patients, including “Laughing Gas” and Wand Anesthesia, along with Laser Dentistry, to reduce pain. As a mom —and dentist — minimizing fears and putting a smile on a child’s face brings her joy. Dr. Gema is originally from Mexico, is married, and has two kids, Becky and Eddie. When she’s not taking good care of her little patients, she enjoys playing tennis, going to the ballet, and traveling.

Dr. Allie

Dr. Allie Lonneman

Pediatric Dentist

Dr. Allie Lonneman is originally from Kentucky. She was a member of the University of Kentucky Division I Women’s Soccer team. In her time as a Division I athlete, she earned her bachelor’s degree in Biology. She continued her education at the University of Kentucky College of Dentistry where she obtained her Doctor of Dental Medicine.

Upon graduating from dental school, Dr. Allie completed a residency in pediatric dentistry UPMC Children’s Hospital of Pittsburgh, a top 10 children’s hospital in the nation.

Dr. Allie’s favorite part about being a pediatric dentist is helping children identify and overcome their fears. Dr. Allie’s goal is to make every child’s experience a positive one and to instill healthy oral habits that will last a lifetime. She is excited to join the team at Island Children’s Dentistry and continue to deliver the highest quality of care alongside Dr. Island.

Dr. Allie is excited to call Virginia home and be close to her family and friends. She is an active member of the Northern Virginia community. On weekends, Dr. Allie loves to volunteer for the TOPSoccer Organization, a program for young athletes with special needs. She loves to try new restaurants and do anything outdoors. She enjoys playing soccer, as well as cooking and baking.

Dr. Bob Marzban - Island Children's Dentistry & Orthodontics

Dr. Bob Marzban


Dr. Marzban started with dental school at the Medical College of Virginia where he earned his DDS Summa Cum Laude. A month after graduation, he moved away from Virginia for the first time since early childhood for his residency in Orthodontics. The University of Connecticut gave him a Masters in Dental Science, a specialty degree in Orthodontics, and a primo seat for college basketball games.

Growing up in Northern Virginia created very strong ties which eventually brought Dr. Marzban back to the area. He enjoys being near his siblings and childhood friends while raising a family. Between running into some of the thousands of smiles he’s created over the years, training and racing several Ironman triathlons, or teaching appointment at Columbia University, Dr, Marzban wants to ensure that his own children can see and appreciate the level of passion and commitment that he and his wife have in their lives.

Despite all that, Dr. Marzban believes that the most important factor for acceptance as a parent is actually whether or not he sings in an embarrassing way while taking the kids to swim practice with their friends.

Dr. Marzban would love to invite you to spend a little time in our office and see for yourself the high level of care from our team. His desire is to be passionate enough to inspire others.

Dr. Nefeli Vasilakou

Dr. Nefeli Vasilakou


Dr. Nefeli Vasilakou is a Diplomate of the American Board of Orthodontics who believes that a beautiful smile can change lives. Born and raised in Athens, Greece, Dr. Nefeli moved to the United States to pursue her dream of becoming an Orthodontist. She studied at Saint Louis University, where she earned her Master of Science in Dentistry, specializing in Orthodontics. She then completed a one year fellowship in Cleft and Craniofacial Orthodontics at Seattle Children’s Hospital, one of the leading Craniofacial Centers in the United States, where she gained invaluable experience in treating complex cases.


Dr. Nefeli is not only a skilled orthodontist, but she is also a published author. She has contributed to numerous articles and publications in the field of Orthodontics, and she is passionate about staying up-to-date with the latest research and advancements in her field. Her passion to inspire others led her to serve as an Assistant Professor at the Pediatric Dentistry program at Saint Louis University.


What truly makes Dr. Nefeli special is her love for her patients. She believes that every person deserves to feel confident and happy with their smile, and she works tirelessly to help her patients achieve their goals.


When she’s not in the office, Dr. Nefeli enjoys spending time with her husband and their adorable baby. You can spot her biking on the local trails, sailing or doing pilates. Dr. Nefeli is also a potter who loves creating beautiful pieces of art just like the beautiful smiles that she works on every day! With her warm personality, passion for Orthodontics, and love for life, Dr. Nefeli is truly one-of-a-kind.

Compromised to our community

At Island Childrens Dentistry we all love giving kids a smile by visiting schools, and serving our community!

DC Magazine Washington's Top Medical Professionals 2022

We are so excited to announce that Island Children’s Dentistry and Orthodontics was named to the DC Magazine list of Top Healthcare Professionals 2022 !!
Dr. Island, Dr. Lonneman, and Dr. Marzban are all featured in the “Washington’s Top Healthcare Professionals” May 2022 issue of Modern Luxury.
We are very proud of the entire team here at Island Children’s Dentistry and Orthodontics for this achievement! In fact, Island’s Children’s Dentistry and Orthodontics was the only pediatric dentist and orthodontist on the list. Great job team!
Read our DC Magazine profile here.