Our Wonderful Team

Barbara Bowling – Registered Dental Hygienist

Barbara is a long-term resident of Northern Virginia and has worked as a Dental Hygienist since 1968. She joined the Herbert Dental Group in 1973 so it’s not unusual for her to be treating multiple generations of the same family. Always staying current in her field, she takes advanced training annually, to provide the best treatment to her patients. When Barbara is not working, her twin girls, her love for Quarter horses, gardening, and reading keep her busy.

Virginia Sullivan – Dental Hygienist

Nina Yates – Dental Hygienist

Hanna Stendeback – Dental Assistant

Sunny Behal – Dental Assistant

Dawn Williams – Clinical Assistant

Dawn has over 20 years’ experience in dentistry. She has had extensive training in: orthodontics, implants, oral surgery and restorative dentistry. Dawn ensures your comfort before, during, and after your treatment, she is a “Professional Hand Holder.” Dawn is a life-long resident of Northern Virginia. When she isn’t working with patients she enjoys hiking, camping, and spending time with her husband Mike, daughter Heather, son Zach and grandson Tristan.

Christine Haslup – Business Office

Marjorie Ziller – Business Office

Nancy Collazo – Practice Manager

Meet Your Dentists

Dr. Amanda Brown
Dr. Amanda Brown
Carrying on her father’s tradition of excellence, Dr. Brown has accomplished extensive orthodontic education and training. She has also invested many hours of continuing education in laser dentistry. The laser improves accuracy of procedures while helping to eliminate pain and recovery time.

Full Biography

Dr. Walter Collazo
Dr. Walter Collazo
Dr. Collazo’s areas of interest are adult complex restorations, esthetics, dental implants, facial pain and TMJ disorders. After years of advanced training and experience, Dr. Collazo discovered that each patient represents a unique set of conditions, desires and expectations that must be evaluated and understood.
Full Biography
Dr. Kelly Lincoln
Dr. Kelly Lincoln
Dr. Lincoln takes pride in improving the form and function of her patients smiles. She genuinely cares not only about her patients oral health, but about their overall health as well. With a gentle approach, Dr. Lincoln strives to provide her patients with the highest standard of personalized dental care.
Full Biography

We Take Our Time

When you enter our office, we serve you alone. We believe in providing our patients sufficient time for thorough and complete care in a one to one environment.

Patient Education

Education about patient’s level of oral health and the choices available to maintain or improve his/her dental health facilitates the ability to make free and informed decisions with regard to dental care.

Empowering the Patient

We believe in providing our patients the opportunity to select a level of treatment consistent with their needs, wants and desired level of health.

Request an Appointment:

Our friendly staff will work with your schedule.

A few words from our patients:

After “dental hopping” for years, I have finally found the right fit! All of the staff members and docs are knowledgeable and friendly and scheduling is a piece of cake. Love this office!
Kerri W., GOOGLE

Love this office my first visit and bridge work done by Douglas Herbert in the 80s..and continued by daughter Amanda and her wonderful team!


Dr. Brown and Dr. Collazo are both top-notch! I have had to see them both for different reasons. Dr. Collazo helped me back in 2008 with seeking treatment for my TMJ-related pain and did a wonderful job! Dr. Brown sees me and the rest of my family for our regular dental care. She does a fantastic job – truly taking time and getting to know our family. I don’t doubt she cares! Cannot recommend this practice enough!