Meet our pediatricians
At Cook Children's, taking care of kids means including the whole family. We take the time to listen to you and your child, answer questions and help you navigate parenthood.
Our doctors are specialists in the health care of infants, children and adolescents. Our team includes board certified pediatricians that, together with you, will get your kids on the path to leading happy and healthy lives.
Sandra Peak, M.D.
Dr. Peak attended Baylor University and received a B.A. in English and Psychology. She attended medical school at University of Texas Health Science Center in San Antonio. Her Pediatric Residency was at Arkansas Childrens Hospital in Little Rock where she participated in Angel One emergency helicopter transport service and where she received the Jocelyn Elders Award for excellence in community service. She returned to her home town of Dallas in 1998 and established a Pediatric Practice in Carrollton, Texas. She joined Cook Childrens Physician Network in Lewisville in 2004. Dr. Peak enjoys gardening, yoga, and boating and in her spare time can be found at the lake with her husband Jay, stepson Sage and the world's most amazing Lab, Sugar Mae.
Justin Smith, M.D.
Dr. Justin Smith is the father of 3 young children and ready to join you in a team approach to caring for your child. He completed medical school at UT Southwestern and pediatric residency at Texas Children's Hospital. He gained 4 years of experience in Abilene working in a pediatric office as well as the NICU, pediatric hospital and PICU prior to joining Cook Children's in 2013. In his spare time he enjoys writing about pediatric care and parenting issues. He is an avid Mavericks and Aggie fan but will also talk with your family about ADHD, behavior problems, asthma, physical fitness and well child care.
Lizy Varughese, M.D.
Dr.Varughese received her B.S in Biomedical Sciences from Texas A&M University and M.D from the University of Texas in Houston. She then went on to complete a residency program in Long Island, New York and was appointed as clinical professor of pediatrics at Stony Brook University Hospital teaching and supervising medical students and residents. After that, she was in private practice in Northern New Jersey for 5 years. She moved back to her hometown of Dallas, TX and joined Cook Children's Physician Network in Lewisville in 2013.
She is married to Dr. Shane Varughese and has two children, Noah and Sarah who are the joy of her life. Dr. Varughese enjoys photography, cooking, and church activities. She also volunteers her time as a physician at GRACE community clinic helping those who have poor access to healthcare. She has over 10 years of pediatric experience, and her passion in life is taking care of children and educating families on newborn care, preventative care and battling childhood obesity.
"Dr.Varughese is a great pediatrician. She is very kind and personable. My children love coming to see her. Dr.Varughese makes them feel comfortable, She as well makes me feel very confident as a mom in the health decisions I make for my 5 children." Cathy Brazzell
"Dr.Varughese is amazing with my child, always very sweet and nice. My daughter likes her a lot and enjoys coming to see her, she especially loves the princess stickers. We are very happy to have her as Paula’s pediatrician and we always feel very appreciated at her practice because everyone in her staff is very nice." Isabel Ortiz
Meet our nurses
Our nurses never settle for average. They continually strive for excellence in both the clinical side of their jobs and in the compassionate treatment of our patients and their families. We are proud of our nurses because they are a shining example of how we work to fulfill our promise to improve the health of every child in our region.
Meet our staff
The people who make our office function.