Pediatrics Services

Our highly qualified professionals bring a variety of skills, experiences and specialties to our Center. Our team members include physicians who are board certified in Pediatric MDs, Family Nurse Practitioners, and Physician Assistants, in addition to certified Medical Assistants. As a patient at the Center, we want you to feel that you are being treated with exceptional care, compassion and professionalism. We are grateful to serve as your child’s medical home.

  • Well Child Visit
  • Comprehensive physical exam
  • Immunizations (shots)
  • Lab tests
  • Health education
  • Vision and hearing testing
  • Follow-up care
  • Sick appointments
  • Referral to a specialist if needed
  • Dental screening
  • Sports Physical

Meet Our Providers

Dr. Renato Daing

Dr. Renato Daing and his wife live in Alexandria and have 3 boys, all of whom were born in Australia. He began his studies in the Philippines and completed his Doctor of Medicine there at Far East University. Dr. Daing moved to Tasmania, Australia for 3 years where he was the Resident Medical Officer at the Northwest Regional Hospital. In addition, he completed his Pediatric Residency at Howard University Hospital in Washington, DC and has been practicing Primary Care Pediatrics since 2003.

Dr. Daing’s favorite genre of music is classical and pop rock. He plays the guitar, enjoys karaoke and detective movies (especially James Bond). Dr. Daing also enjoys swimming and completing DIY projects around the house.

Dr. Hussein Al-Shammaa

Dr. Hussein Al-Shammaa

Dr. Al-Shammaa graduated from Faculty of Medicine , Cairo University. He completed his pediatric residency at Maimonides Medical Center in New York City in 1993. He is board certified with the American Board of Pediatrics. Since 1994, he has been practicing General Pediatrics as a solo practitioner. He joined the Center in November 2017.

Dr. Al-Shammaa enjoys running and traveling.

Carmen Martinez, PA-C
Pediatric Physician Assistant

Carmen Martinez, PA-C is originally from New York. She attended the City of New York - City College/ Harlem Hospital Physician Assistant Program. She has practiced in New York, Georgia and in Virginia for the past 13 years. She has background experiences in Newborn and Intensive Care Units and several Pediatric private practices in New York and Virginia. In the last 7 years, she has dedicated her work in community health and has been at GPW Health Center for 3 years.

Carmen Martinez lives in Ashburn with her husband and has 3 adult Children. She enjoys spending her free time attending basketball games and traveling with her family.

Debbie Risco-Dunlap, 
Family Nurse Practitioner

Debbie Risco-Dunlap, FNP lives in Lake Ridge with her husband and two boys. She was born and raised in Peru before moving to Virginia and is fluent in Spanish and English. She earned a B.S. in Biology at Marymount University, a B.S. in Nursing from George Mason University followed by a Masters Degree in Family Medicine at Marymount University and she is board certified in Family Medicine. She has worked for 13+ years at Inova Fairfax Hospital for Children and Inova Cares for Children.

Her clinical interests encompass all aspects of pediatric care from newborn to adolescence.