CHLA In the News

Team Will Welcome 7 GI Fellows in 2023

The fellows will take part in five advanced pediatric gastroenterology and hepatology training programs at Children’s Hospital Los Angeles.

The Division of Gastroenterology, Hepatology and Nutrition at Children’s Hospital Los Angeles will welcome seven fellows into its advanced pediatric GI training programs this year.

The fellows are all graduates from prestigious institutions across the country and will take part in five different programs: Pediatric Gastroenterology, Transplant Hepatology, Advanced Nutrition, Gastrointestinal Motility and Functional Disorders, and Advanced Inflammatory Bowel Disease (IBD).

Children’s Hospital Los Angeles is one of only a handful of centers nationwide to offer numerous advanced training opportunities for pediatric GI and hepatology. Both the gastroenterology and transplant hepatology fellowships are accredited by the Accreditation Council for Graduate Medical Education (ACGME). The GI motility, IBD and nutrition fellowships are one-year, non-ACGME-accredited programs.

Below is a full list of the team’s 2023 GI trainees:

Gastroenterology (ACGME-accredited)

Blake Rosenthal, DO 
UCSF Benioff Children’s Hospital Oakland

Wilson Mourad, MD 
University of California, San Francisco PLUS Program (Pediatric Leaders Advancing Health Equity)

Parastou Khalessi Hosseini, DO 
Los Angeles County + University of Southern California

Liver Transplant Hepatology (ACGME-accredited)

Johanna Ascher Bartlett, MD 
Children’s Hospital Los Angeles

Advanced Nutrition

Atu Agawu, MD, MPH 
Children’s Hospital of Philadelphia

GI Motility and Functional Disorders

Shruti Nabar, MD 
Orlando Health/Arnold Palmer Hospital for Children

Advanced Inflammatory Bowel Disease

Ariella Cohen, DO 
Children’s National Hospital

For more information on GI fellowships and advanced training opportunities at Children’s Hospital Los Angeles, contact Melissa Almanzan at

Learn more about our Gastroenterology Fellowship.