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Pediatrician - Grapevine, William D. TateCook Children's Pediatrics


William D. Tate

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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 the "perils" of parenthood.

We're here to help you with well-child visits, illnesses, behavior problems, learning disorders, or just to answer the questions that all parents have at one time or another. Together we'll get your kids on the path to good health and help you raise happy, well-adjusted children.


3801 William D. Tate, Ste. 200
Grapevine, TX 76051
817-347-6863 schedule appointment
Driving Directions

Meet our doctors

Our doctors are specialists in the health care of infants, children and adolescents. Our team includes board-certified pediatricians.

Sandra Arca, M.D., FAAP

Sandra Arca, M.D., FAAP

Dr. Arca received her undergraduate degree in biomedical science from Texas A&M University in College Station, Texas. She earned her medical degree from the University of Texas Health Science Center in Houston, Texas and completed her internship and residency at Vanderbilt University Children's Hospital in Nashville, Tenn. She is board-certified in pediatrics and has been with Cook Children's Physician Network since 1999.

View physician biography.

Melanie Harston, D.O.

Melanie Harston, D.O.

Dr. Harston received her medical degree from the College of Osteopathic Medicine at Oklahoma State University in Stillwater, Oklahoma. She completed her pediatric residency at Baylor College of Medicine in Houston, Texas. Dr. Harston is board-certified in pediatrics.

View physician biography.

Office hours and appointments

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Make an appointment at Grapevine William D. Tate

New and existing patients of the Grapevine William D. Tate pediatrician office can make an appointment by calling: 817-347-6863

New patients, for your convenience, please have your insurance information ready when you call.

Fees, payments and insurance

Exchange messages, review and pay bills, request appointments and insurance information through (patient portal)

Patient forms

We know that filling out forms can be time consuming, however, they are a required part of your child's care. For your convenience, we've provided patient information and consent forms here. Just print them out, fill in the information, sign them and bring the completed forms with you when you come in for your appointment.

Cook Children's specialty care services

At Cook Children's, we provide more than 60 pediatric medical and specialty clinic offices throughout Texas.

Continued care


After-hours calls

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