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Our Doctors

Dr. Walter Collazo

Dr. Collazo earned his dental degree from Georgetown University School of Dentistry in 1990. Shortly after graduation, he joined the U.S. Army Dental Corps where he completed an Advanced Education Program in General Dentistry. In 1995, following military assignments in Kansas, Germany and Texas, Dr. Collazo established residence in Northern Virginia.

Professionally, he is dedicated to providing his patients exceptional clinical care. This pursuit has taken him to develop professional relationships with some of the best advanced dental education centers in the World, like The Pankey Institute and Spear Education. His areas of clinical interest are adult complex restorations, esthetics, dental implants, facial pain, TMJ disorders, and dental sleep medicine. He lectures on those topics to local study clubs and maintains membership in the Greater Loudoun Study Club (where he serves as a restorative advisor), Spear Faculty Club and Spear Study Club.

Dr. Collazo believes that each patient presents a unique set of conditions, desires and expectations that must be evaluated and understood. Therefore, he aims to develop a partnership with his patients and to empower them to create a lifetime strategy to achieve comfort, function, beauty and dental health.

Outside the office, Dr. Collazo is a family man and sport enthusiast. As a former volleyball athlete, he lends his experience by being on the coaching staff of the Heritage High School Volleyball Program and Club Volleyball circuit. In addition to dentistry and sports, his wife of over 30 years and family (which includes two adult daughters and a dog) are his foundation and greatest success.

Dr. Collazo is a preferred Vendor for the Management of Obstructive Sleep Apnea with Oral Appliance Therapy in Reston, Herndon, Sterling and Loudoun County.

Dr. Amanda Brown

Dr. Amanda Brown has been involved in dentistry for longer than she can remember! The daughter of founder Dr. Douglas Herbert, Dr. Brown joined the practice in 1998 after graduating from the Medical College of Virginia. She is a lifelong native of Loudoun County.

Dr. Brown has accomplished extensive advance education and hands on training in orthodontic and restorative dentistry. She strongly believes the functional, structural and esthetic components of a smile contribute to optimal patient well-being. Dr. Brown is a member of several organizations including the American Orthodontic Society, Academy of General Dentistry and the American Dental Association. Dr. Brown trains at the Spear Institute in Scottsdale, Arizona and is an active member of the Greater Loudoun Study Club. She has also invested many hours of continuing education in laser dentistry at the World Clinical Laser Institute. The laser improves accuracy of procedures while helping to eliminate pain and recovery time. Dr. Brown prides herself in being extremely gentle and provides care for children of the practice.

Dr. Brown and her husband live in Purcellville with their sons and border collies. In addition to her family and professional schedule, Dr. Brown enjoys hiking, skiing, baking and maintains an extensive vegetable garden.

Dr. Kelly Lincoln

Dr. Lincoln provides compassionate dentistry to children and adults who are seeking a patient-centered approach to their dental care so that they can enjoy and take pride in their smiles throughout their lives. She listens, informs, and involves patients in their care so that they can accomplish their treatment goals while being as comfortable and as knowledgable as possible.

After graduating with a degree in biology from Boston College, Dr. Lincoln went on to earn her doctorate from the University of Maryland’s Baltimore College of Dental Surgery. Highly committed to continuing her dental education, she regularly attends courses to master the latest techniques and technology. Dr. Lincoln has completed advanced continuing education courses at the prestigious Pankey Institute in Key Biscayne, Florida, and is currently a member of the American Dental Association, the Academy of General Dentistry, the Virginia Dental Association, the Northern Virginia Dental Society, and the Greater Loudoun Study Club.

Dr. Lincoln donates her time to the Virginia Dental Association’s Northern Virginia Mission of Mercy (MOM) project. Additionally, during the month of February (National Children's Dental Health Month), Dr. Lincoln gives dental education and career talks to preschoolers, kindergarteners and Girl Scout Troops.

Outside of dentistry, Dr. Lincoln was honored to be selected as one of the 2018 Loudoun Times-Mirror’s “40 Under 40,” recognizing the top young business and community leaders in Loudoun County. When Dr. Lincoln is not chasing after her two amazingly-clever daughters, she enjoys doing home improvement projects and playing racquetball with her husband.

Dr. Lincoln looks forward to having you as a patient.

Dr. Reem I. Alhussain

Dr. Reem I. Alhussain is personally invested to see each child have the best oral healthcare he or she deserves. She believes it is important for children to have a positive dental experience starting at a young age to foster a lifetime of excellent oral health. She enjoys making the dental visit a comfortable and fun experience for every child.

Dr. Reem has had the privilege to serve as an American Student Dental Association national leader to advocate for oral health. She is an active member of the American Academy of Pediatric Dentistry (AAPD) and a diplomate of the American Board of Pediatric Dentistry. She has represented her beloved state of Virginia on AAPD Lobby Day advocating for policy impacting pediatric oral health.

She was born in France and raised in Paris and Virginia. Growing up in different continents led to her commitment and love to connect with people. She has taken great pride in the personal connections she built with her patients over the years. She truly believes that patient-centered communication is the core of any relationship success. With that philosophy in mind, she graduated summa cum laude from George Mason University in Fairfax, VA where she obtained her Bachelor’s Degree in Political and Persuasive Communications with a Minor in Business.

Dr. Reem received her Doctorate of Dental Surgery from Virginia Commonwealth University Medical College of Virginia. She then completed residency in pediatric dentistry at New York University College of Dentistry and Bellevue Hospital Center where she was appointed Chief Resident. She received the opportunity to work at the Rose F Kennedy Center for developmental disabled patients which allowed her to hone her skills with special needs patients.

Dr. Reem has a passion for traveling for service. She has traveled to provide care for underserved patients both locally in Virginia through Mission of Mercy and Give Kids A Smile. She has also served internationally in Jamaica, Grenada, and Nepal. She loves to spend quality time with her husband, family, and friends. She absolutely loves to travel and learn new languages. She currently speaks English, Arabic, French, and is striving to learn Spanish.

Our Staff