Our Team

Co-Directors

It is important for me to place the patient at the center of everything that I do. I want to provide individualized care and treatment for each patient and family while providing the most up-to-date information regarding medications and technology advancements. My team of pediatric and adolescent… read more

Phone: 832-822-2778

Jacquelyn M. Powers, MD, MS

Dr. Jackie Powers is an expert in the management of iron deficiency anemia. She was the principal investigator for the BESTIRON clinical trial, which compared the efficacy of two commonly prescribed oral iron medications for the treatment of iron deficiency anemia in young children. This trial was… read more

Phone: 832-824-7330

Associate Directors

Clay T. Cohen, MD

Dr. Clay Cohen is a pediatric hematologist with clinical expertise in children and adolescents with bleeding and clotting disorders. Dr. Cohen is the Director of the Hemophilia Treatment Center at Texas Children’s Hospital where he provides care for patients with hemophilia, Von Willebrand disease… read more

Phone: 832-822-4242

Jennifer Kurkowski, WHNP

When Jennifer Kurkowski volunteered at a hospital in high school, she immediately knew that she wanted to become a nurse practitioner. Her specialization in pediatric and adolescent gynecology is a perfect fit for her interests in both pediatrics and women’s health. Whether teen girls come to her… read more

Phone: 832-822-3640 (Main) | 832-227-3350 (West)

Hematology/Oncology

Clay T. Cohen, MD

Phone: 832-822-4242

Jacquelyn M. Powers, MD, MS

Phone: 832-824-7330

Heather Soni, APRN, MSN, CPNP

Heather Soni is a pediatric nurse practitioner for the Hemophilia and Thrombosis Program at Texas Children’s Hematology Center. She specializes in the management of anticoagulation disorders. She is board certified by the Texas Board of Nursing and the Pediatric Nursing Certification Board.

Phone: 832-822-1541

Genetic Counselor

Hannah L. Helber, MS, CGC

Hannah Helber is a certified genetic counselor for the Hematology Center at Texas Children's Hospital. As a genetic counselor in the Hematology Clinic, she works to identify families at risk for inherited hematologic conditions. She provides education on genetics, as well as discussing options for… read more

Phone: 832-822-4240

Gynecology

Jennifer E. Dietrich, MSc, MD, FACOG

Phone: 832-822-2778

Olivia Winfrey, MD, MPH

Dr. Winfrey evaluates children from infancy to young adulthood with a variety of medical and surgical gynecologic conditions. She enjoys educating her patients about their health and providing comprehensive counseling on all management options. There is often not only one right answer, so her main… read more

Phone: 832-822-3640