Meet Our Team


Clinical Assistant

In addition to assisting our doctors with dental procedures, Rosina holds an X-ray certificate. She’s been a part of our dental family for a number of years, and says she loves the quality of dental care, work ethic, and loyalty our team devotes to our patients. An enthusiastic people person, Rosina looks forward to her interactions with patients and coworkers, and the wonderful feeling that comes with helping people smile. Rosina’s family lives in Lima, Peru, and she has been a North Virginian since 1987. In her spare time, she enjoys knitting, arts and crafts, music, pets, reading, and travel.


Clinical Assistant

Sara received her diploma in Dental Assisting at Clover Park Technical College in Tacoma, Washington. She has been a dental assistant for 24 years. She joined Arlington Dentistry by Design a year ago. During her spare time, she enjoys photography, ice-skating and writing short stories.


Business Administrator

Tip describes our practice, which offers sedation, cosmetic dentistry, implant dentistry, and general and preventive dentistry, as “a complete dental institute!” She has been working with Dr. Khalil since 2003, and exemplifies our standard of honest, caring, and attention to patients. Tip believes those values are why we see so many familiar faces around our office every day. The biggest reward in her line of work is to see the patients walk out of here with a big smile.

When she’s not helping our patient care run smoothly, Tip enjoys spending time with her son and family, eating at her mom’s restaurant, volunteering at her son’s school, and being a football mom.


Business Administrator

Kelsie is from Salt Lake City, Utah. She has been a Front Desk for 4 years. She joined Arlington Dentistry by Design more than two years ago. During her spare time, she loves watching movies and spending time with her dog, Lady, on hikes. Kelsie says that the practice feels like a family and she loves working with our patients!


Business Administrator

Kasy Ly has 5 years of experience as a Business Administrator. Kasy Ly has 2 sons, Dylan and Brennan. Kasy Ly loves that Arlington Smile Design is one big happy family, everyone from patients to the staff. Kasy Ly takes great pride when patients walk out of here with a huge smile on their face.

Some of Kasy Ly's hobbies include: spending time with her sons, make-up, and fishing.


Registered Dental Hygienist​​​​​​​

Christa grew up in Northern Virginia and attended Christopher Newport University with a degree in a psychology. She then pursued a second degree in Dental Hygiene at Northern Virginia Community College. With 17 years of experience in dentistry and over 3 years at Arlington Dentistry by Design she is invaluable assets to our practice.

​​​​​​​Her dental approach is to connect with patients by educating them in a fun, guilt free environment. Her hobbies include, but are not limited to, nutrition, cooking, fitness and living an environmentally sustainable lifestyle.


Registered Dental Hygienist​​​​​​​

Dani has been an RDH since 2006 and has been a long term temp for every hygienist at our practice in 2017 but officially came on board January 2020.


  • Bachelor of Science in Biology from the University of Maryland College Park

  • Associate Degree in Dental Hygiene from Allegany College of Maryland. Licensed to practice in both Maryland and Virginia.

  • Local Anesthetics Certifications from University of Maryland School of Dentistry

  • Certified for Diode Laser Periodontal Treatment

  • Cardiopulmonary Resuscitation (CPR)

  • Automated External Defibrillator (AED)
Dani is also the mom of two boys: Remy (9 years old) and Logan (8 years old). Both are on the swim team, participate in martial arts and play instruments. She is also an active board on the boys' elementary school PTO, board member of our local pool, Annandale Swim and Tennis and team representative for their swim team specifically the B Rep.

Dani loves the fact that she is part of a team that cares so much about the wellbeing of each and every patient's oral health in total and she also loves the exceptional work that the doctors do. Dani, being a relationship type of person, feels rewarded when she helps rehabilitates and maintains a patient's oral health and overall physical/mental health.