Skip to main content

COVID-19 Updates: Get the latest on vaccine information, in-person appointments, video visits and more. Learn More >>

Our Team

The multidisciplinary precision oncology team at Texas Children’s Cancer Center comprises experts in personalized medicine including oncologists, pathologists, surgeons, and geneticists who work together to identify the best treatment and clinical trial options for each individual patient. Importantly, this team has expertise in the genetics and treatment of each type of childhood cancer and extensive experience with the development and evaluation of innovative new cancer therapies.


Dr. Donald Williams (Will) Parsons is the Sidney L. and Donald F. Faust Chair of Pediatric Cancer Precision Medicine at Texas Children's Hospital and Deputy Director of Texas Children’s Cancer and Hematology Center, Baylor College of Medicine (BCM). He is a board-certified pediatric hematologist-… read more
Phone: 832-824-4643

Assistant Director / Neuro-oncology

Dr. Frank Lin is a physician at Texas Children’s Cancer Center. Dr. Lin sees patients in the Urgent Care Bay (UCB) of the outpatient clinic. He is a member of the Brain Tumor Program. Dr. Lin is a graduate of Loyola University of Chicago, Stritch School of Medicine where he received his medical… read more
Phone: 832-822-4242

Lab Director

Dr. Angshumoy Roy's clinical interests encompass the application of molecular genetic and genomic technologies in the diagnosis of cancer and in the identification and development of biomarkers that predict chemoresistance. His research interests involve exploring the genomics and epigenomics of… read more
Phone: 832-824-3710


Dr. Carl Allen is the Milton and Allene Nirken Chair in Pediatric Oncology at Texas Children's Hospital and co-director of the Texas Children’s Cancer Center Histiocytosis and Lymphoma Programs, where he leads a team of over 30 clinicians and scientists dedicated to improving the outcomes of… read more
Phone: 832-824-4312


Dr. Rachel Rau is a physician for the Leukemia Program at Texas Children’s Cancer Center. Her research findings identify new therapeutic targets that are developed and tested for use in the patient care clinic. Dr. Rau is fully committed to a career as a physician-scientist dedicated to improving… read more
Phone: 832-822-4242 (Clinic) and 832-822-1528 (Office)


Board Certifications American Board of Pediatrics American Board of Pediatrics – Hematology/Oncology American Board of Internal Medicine
Phone: 832-824-4163

Cancer Genetics Counselor

Ms. Sarah Scollon is a board certified genetic counselor and has been practicing in both clinical and research pediatric genetics since 2006. She is a graduate of the University of Michigan Genetic Counseling Program and is board certified by the American Board of Genetic Counseling. She was… read more
Phone: 832-824-4685

Nurse Coordinator

Kyoko Sasahara

Coordinator Support

Deena Walton

Nurse Manager

Rhoda Philips