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Texas Medical Center

Developmental Pediatrics
Phone: 832-822-3400
Fax: 832-825-3399


The Meyer Center for Developmental Pediatrics
8080 North Stadium Drive, Suite 100
Houston, TX 77054

Kathryn (Katy) Klish Ostermaier, MD, FAAP

Chief of Service for Developmental Behavioral Pediatrics
Director - Down Syndrome Clinic


School Education Degree Year
Baylor College of Medicine Residency Pediatrics 1999
Baylor College of Medicine Internship Pediatrics 1997
Baylor College of Medicine Medical School Doctor of Medicine 1996


Dr. Kathryn Ostermaier graduated magna cum laude from Texas A&M University in 1992 with a Bachelor of Science degree in Genetics. She completed medical school at Baylor College of Medicine in 1996 and her Pediatric Residency at Baylor College of Medicine in 1999. After finishing her training, she joined Baylor as a faculty member. Given her commitment to providing care for children with complex medical and developmental conditions, she started the Special Needs Clinic at Ben Taub General Hospital in 2001, one of only two such clinics in the area at the time. She became board-certified in Developmental Behavioral Pediatrics in 2004 and was named director of Texas Children's Spina Bifida Clinic in 2005. In 2007, she started the Complex Care Clinic at Texas Children's Hospital, which is now the largest clinic of its kind in southeast Texas. She became the director of the Down Syndrome Clinic at Texas Children's Hospital in 2009 and continues to serve in this role. In 2023, she was promoted to Professor of Pediatrics at Baylor College of Medicine and is the division chief for Developmental Behavioral Pediatrics. 

Clinical and Research Interests: Dr. Ostermaier's clinical and research interests are related to caring for children with a wide range of developmental conditions while providing the best collaborative and coordinated care possible for patients and their families. 

Selected Publications

Ostermaier KK. Clinical features and diagnosis of Down Syndrome. In: UpToDate (Rose BD, ed.) Wellesley, MA: UpToDate, 2010.

* Texas Children's Hospital physicians' licenses and credentials are reviewed prior to practicing at any of our facilities. Sections titled From the Doctor, Professional Organizations and Publications were provided by the physician's office and were not verified by Texas Children's Hospital.