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Office Location(s): Herndon & Aldie

Other languages spoken: Spanish (moderately fluent), German (conversational) 

Reena Kaul, M.D., M.P.H., F.A.A.P., is a board-certified pediatrician dedicated to providing compassionate, high-quality, and family-centered care. Dr. Kaul sees children in Fairfax, Herndon, and Aldie, Virginia, at Virginia Pediatric Group.

Dr. Kaul was born in Oklahoma and spent her childhood in Stone Mountain, Georgia. In 1995, she earned her Bachelor of Science in bioengineering at the University of California, San Diego, as a Regents’ Scholar. She then completed her Master of Public Health in Community Health Sciences/Child Health Policy at the University of California Los Angeles in 1997. 

While she enjoyed working in child health policy advocacy at Maternal and Child Health Access in Los Angeles on the community health level, Dr. Kaul ultimately decided that providing child and family-centered health care at the personal level is where she could make the most difference in the lives of children. 

In 2002, Dr. Kaul earned her medical degree at the University of Southern California-Keck School of Medicine with a National Health Services Corps (NHSC) Scholarship. She completed her pediatrics residency training at the Children’s Hospital and Research Center Oakland in 2005. 

After training, she worked as an NHSC scholar at a private, non-profit health center in the underserved area of Lehigh Acres, Florida, for three years. She then moved to Bergen County, New Jersey, where she worked in a large private practice prior to joining the Virginia Pediatric Group in 2013.

She is currently the President of the Health Connect IPA. She is also an Assistant Professor of Medical Education at the University of Virginia School of Medicine. 

Dr. Kaul enjoys helping guide children and families towards health and well-being from birth through adolescence. Her areas of interest include preventive medicine, nutrition, breastfeeding promotion, dermatology, and infectious disease.  

In her free time, Dr. Kaul enjoys spending time with her family, dancing, listening to music, cooking, and traveling. She resides in Herndon, Virginia, with her husband and their two young sons.

Patient Reviews

“Loved how Doctor Kaul interacted with my one year old. She is a great listener and answers all questions.”
- Sonam A.

“We have been with Virginia Pediatrics since we moved to Stone Ridge a few years ago. We love Dr. Kaul and have been very happy with all the physicians we have seen at this practice.”
- Shafnden H.

“Dr. Kaul gave us reassurance in a very warm and comforting manner. She was thorough, confident and kind. She was knowledgeable and got right to the point. She was gentle with our baby.”
- Huma C.

“Dr. Kaul is absolutely the best and we try to see her whenever she has availability. All providers are excellent, but she's definitely our favorite! Our kids love her and she has the patience and demeanor you would expect for a pediatrician.”
- Mercedes P.

Office Location(s): Herndon and Aldie

Other languages spoken: Spanish (fluent)

Belen Pappa, M.D., Sc.M, FAAP is a board-certified pediatrician, providing compassionate and culturally competent care to families in Herndon, Fairfax, and Aldie, Virginia, alongside the team at Virginia Pediatric Group since 2021.

Dr. Pappa was born and raised in Buenos Aires, Argentina. She is fluent in Spanish and enjoys working with families of diverse cultural backgrounds. Her special interests include supporting new parents in the care of their newborn, preventive health, genetics, and adolescent medicine. 

She earned her Bachelor of Science in Genetics from the University of Maryland, graduating with high honors and trained as a Genetic Counselor at the Johns Hopkins Bloomberg School of Public Health. After working several years as a Genetic Counselor in Washington D.C., Dr. Pappa returned to school to earn her medical degree from West Virginia University in 2018. She completed her pediatric residency at VCU Health Systems in Richmond, Virginia, in 2021, with a special focus on primary care. 

In her free time, Dr. Pappa enjoys spending time with her family and friends, discovering new restaurants, and traveling. She lives in Leesburg, Virginia, with her husband and young children. 

Patient Reviews

“Dr. Pappa was super friendly and warm. She connected with my daughter right away. Our visit with her was incredibly thorough and informative.”
- Jonelle S.

“Dr. Pappa was kind, gentle, and thorough in her examination of my sick 9mo. She didn't come off as rushed, and gave me plenty of time to ask questions, all of which she answered fully. I highly recommend Dr. Pappa!”
- Mollie M.

“The Doctor was very friendly and knowledgeable seeing kids for the first time.”
- Shiraz A.

Office Location(s): Aldie

Other languages spoken: Spanish (fluent)

Double board-certified pediatrician and internal medicine specialist David Rubio, M.D., F.A.A.P., has cared for patients in Northern Virginia for over two decades. He is part of the Virginia Pediatric Group team and sees patients at the practice’s location in Aldie, Virginia. 

Dr. Rubio was born in Queens, New York, although he considers South Riding, Virginia, his hometown. He completed a six-year biomedical program with Union College in Schenectady, New York, earning a Bachelor of Science in 1987. He completed his medical degree in 1989 at Albany Medical College, also in New York. He then went on to complete his internal medicine/pediatrics residency training in 1993 at the North Shore University Hospital/Cornell University Medical Center in New York. 

Upon residency completion, Dr. Rubio joined the Northern Virginia Primary Care Associates in Annandale until 2008, when he developed and managed his own private pediatrics practice in South Riding. He was board certified by the American Board of Internal Medicine in 1994 and recertified in 2003. Dr. Rubio was also board certified by the American Board of Pediatrics in 1994 and recertified in 2016. 

In 2016, Dr. Rubio and his practice joined the Virginia Pediatric Group. He feels it is wonderful to watch the children he's cared for over the years grow and develop. The personal relationships made with families have been extremely rewarding, and he looks forward to doing the same for many years to come. 

Dr. Rubio is fluent in Spanish and resides in South Riding with his wife and three children. In his free time, he enjoys sports and music.

Patient Reviews

“Dr. Rubio is the best! We've been with him since before he joined Virginia Pediatrics, and is the only reason we stay with that group. He's patient and answers all of our questions. Always feel better after talking to him about any concerns we may have. The kids really like him too!”
- Karla D.

“Been with Dr. Rubio for over 10 years. He is patient, listens, is understanding, is not forceful with medical advice. Helps you to understand. We have always felt and still feel comfortable with him and his staff.”
- Estelle K.

“Dr. Rubio is an amazing pediatrician. Highly recommended.”
- Victor G.

“Dr. Rubio is the best, super friendly. He didn't rush (like many other places) and he was thorough. Definitely recommend.”
- Kishore K.

Rebecca Alkire Santos, MD, is a compassionate, board-certified general pediatrician dedicated to providing comprehensive, preventive pediatric care for infants, children, and adolescents. Certified by the American Board of Pediatrics and a Fellow of the American Academy of Pediatrics (FAAP), Dr. Santos is committed to helping families at Virginia Pediatric Group, with offices in Fairfax, Herndon, Great Falls, and Aldie, Virginia.

Born in Winchester, Virginia, and raised in West Virginia, Dr. Santos graduated summa cum laude from West Virginia University with a Bachelor of Science in Animal and Veterinary Sciences. She earned her medical degree from West Virginia University School of Medicine and completed her pediatric residency at Inova Children’s Hospital. Before joining Virginia Pediatric Group, she spent 14 years in Charlotte, North Carolina, where she helped establish and lead a successful pediatric practice.

Dr. Santos believes that listening closely to children and their families is one of the most important parts of pediatric care. She partners with parents to create personalized, evidence-based care plans focused on prevention, growth, development, and overall wellness. Her approach is collaborative, thoughtful, and centered on meeting each family where they are.

Outside the office, Dr. Santos enjoys traveling, spending time outdoors, cheering on Mountaineer football, and making memories with her family and friends.

Kirra L. Brandon, MD is board certified in both dermatology and pediatric dermatology, and provides care to patients of all ages at Easton Dermatology Associates, a leading dermatology practice in Easton, Maryland, that serves residents on the Delmarva Peninsula. Although Dr. Brandon offers medical skin care services to patients of any age, she specializes in pediatric dermatology. Her specific interests include vascular birthmarks, genetic skin disorders, and pediatric skin and laser surgery.

Dr. Brandon obtained her undergraduate degree in biology from Harvard University, where she graduated with honors. She earned her medical degree at the University of Maryland Medical School, which is where she developed her interest in pediatric dermatology. She completed her internship in internal medicine at Tulane Hospital in New Orleans, followed by her residency in dermatology at Louisiana State University, also in New Orleans.

After finishing her residency, Dr. Brandon completed a year-long fellowship in pediatric dermatology at Texas Children’s Hospital in Houston. When her fellowship concluded, Dr. Brandon stayed on at the hospital as an Assistant Professor of Pediatrics and Dermatology.

Dr. Brandon is a fellow of the American Academy of Dermatology. She’s an active member of the Society for Pediatric Dermatology, and has spoken at their national meeting, as well as several other regional conferences designed to educate pediatricians about pediatric skin conditions. Dr. Brandon has also authored multiple publications in dermatology and pediatrics journals.

As a native of Annapolis, Maryland, Dr. Brandon was excited to return to the area with her husband, Gus, an ophthalmologist and fellow Maryland native, and their two young daughters. In her spare time, Dr. Brandon enjoys hiking, swimming, and spending time with her family.