Claudia Phen, M.D., is an Assistant Professor in the Department of Pediatrics at UT Southwestern Medical Center. She specializes in gastroenterology, hepatology, and nutrition, focusing on gastrointestinal polyposis, hereditary GI cancer syndromes, and liver disease.

Dr. Phen earned her medical degree at the University of Florida College of Medicine. She completed a residency in pediatrics at Johns Hopkins All Children’s Hospital and received advanced training through a pediatric gastroenterology, hepatology, and nutrition fellowship at UT Southwestern and Children’s Health.

Certified by the American Board of Pediatrics in General Pediatrics and Pediatric Gastroenterology, she joined the UT Southwestern faculty in 2021.

Dr. Phen is a member of the North American Society for Pediatric Gastroenterology, Hepatology & Nutrition (NASPGHAN) through which she is an active member of the Pediatric Polyposis Special Interest Group. She has delivered numerous presentations, both locally and nationally, and published several peer-reviewed articles related to her area of expertise.

She has a special interest in gastrointestinal polyposis syndromes, hereditary GI cancer syndromes, and liver diseases. She enjoys patient care and teaching medical learners. She strives to educate and empower her patients so they can lead longer, healthier lives.

In her spare time when not at work, Dr. Phen enjoys traveling, trying new restaurants, and spending time with her husband, son, and two dogs.


Medical School
University of Florida College of Medicine (2015)
Johns Hopkins Medicine All Children's Hospital (2018), Pediatrics
UT Southwestern/Children's Medical Center (2021), Pediatric Gastroenterology

Research Interest

  • Hereditary GI Cancer Syndromes
  • Liver Disease
  • Pediatric Polyposis


Featured Publications LegendFeatured Publications

Juvenile polyposis syndrome in children: The impact of SMAD4 and BMPR1A mutations on clinical phenotype and polyp burden.
Cohen S, Yerushalmy-Feler A, Rojas I, Phen C, Rudnick DA, Flahive CB, Erdman SH, Magen-Rimon R, Copova I, Attard T, Latchford A, Hyer W, J Pediatr Gastroenterol Nutr 2024 May
Mucosal prolapse syndrome mimicking Peutz-Jeghers syndrome in a pediatric patient.
Do P, Phen C, Alkalay M, Singh V, Rojas I, JPGN Rep 2024 May 5 2 170-174
The Role of Capsule Endoscopy in the Management of Pediatric Hereditary Polyposis Syndromes.
Phen C, Attard TM, J Pediatr Gastroenterol Nutr 2023 Jul
Polygenic early-onset colorectal cancer in pediatric patients.
Phen C, Berens D, Moriarty K, Ng K, Sengupta A, Rojas I, Pediatr Blood Cancer 2022 Oct 69 10 e29790
Effectiveness and Complication Rate of Percutaneous Endoscopic Gastrostomy Placement in Pediatric Oncology Patients.
Kidder M, Phen C, Brown J, Kimsey K, Oshrine B, Ghazarian S, Mateus J, Amankwah E, Wilsey M, Pediatr Gastroenterol Hepatol Nutr 2021 Nov 24 6 546-554
Paediatric polyposis syndromes: burden of disease and current concepts.
Phen C, Rojas I, Curr Opin Pediatr 2021 Jul
mTOR inhibitors reduce enteropathy, intestinal bleeding and colectomy rate in patients with juvenile polyposis of infancy with PTEN-BMPR1A deletion.
Taylor H, Yerlioglu D, Phen C, Ballauff A, Nedelkopoulou N, Spier I, Loverdos I, Busoni VB, Heise J, Dale P, de Meij T, Sweet K, Cohen MC, Fox VL, Mas E, Aretz S, Eng C, Buderus S, Thomson M, Rojas I, Uhlig HH, Hum Mol Genet 2021 Jun 30 14 1273-1282
COVID-19 in a Pediatric Patient: Novel Presentation of Cardiac Failure resulting in Chylous Ascites and Abdominal Pain.
Phen C, Woolley J, Kelley S, Garcia J, Baez Hernandez N, Aqul A, JPGN Rep 2021 May 2 2 e068
Hepatic Steatosis in the Pediatric Population: An Overview of Pathophysiology, Genetics, and Diagnostic Workup.
Phen C, Ramirez CM, Clin Liver Dis (Hoboken) 2021 Mar 17 3 191-195
Gastric Xanthoma in the Pediatric Population: A Possible Herald for Malignancy?
Russell JD, Peck J, Phen C, Linehan JL, Karjoo S, Nguyen J, Wilsey MJ, Pediatr Gastroenterol Hepatol Nutr 2020 Jan 23 1 110-114

Honors & Awards

  • Presenter of the Year Award
    Awarded by the UTSW Pediatric Residency Program (2023)
  • Clinical Training Grant
    Awarded by the Cystic Fibrosis Foundation (2018-2020)
  • Institutional Research Grant
    Awarded by Johns Hopkins All Children's Hospital (2018)
  • Peers Recognizing Peers Resident Award for Outstanding Care
    Awarded by Johns Hopkins All Children's Hospital (2017)
  • Resident Scholar of the Year Award
    Awarded by Johns Hopkins All Children's Pediatric Residency Program (2017)
  • Jean Lester Bennett Scholarship for Outstanding Performance in Pediatrics
    Awarded by the University of Florida College of Medicine (2015)

Professional Associations/Affiliations

  • American Academy of Pediatrics (2015-2023)
  • North American Society of Pediatric Gastroenterology, Hepatology and Nutrition (2018-2023)