Meet Our Pediatric Gastroenterology Team

Experts at the Pediatric Gastroenterology Program, part of Hassenfeld Children’s Hospital at NYU Langone, work together to determine the best care plan for your child, while also providing support for your child and family.

Pediatric Gastroenterologists

Our doctors are board certified in pediatric gastroenterology and leaders in their field.

Our Care Team

Our team includes specialized nurses, dietitians, and social workers who work alongside our doctors to help your child and family manage the challenges of living with a chronic condition.

  • Monique Armstrong at Meet Our Pediatric Gastroenterology Team
    Monique Armstrong, MSW, LCSW
    Senior Social Worker

    Ms. Armstrong received her bachelor’s degree from Binghamton University and holds a master’s degree in social work from the University of Albany. Ms. Armstrong is the primary senior social worker for children with gastrointestinal, pulmonological, and infectious disease conditions, including cystic fibrosis. She specializes in group treatment for adults and children, mental illness treatment, coordination of complex care needs, and supportive care and end-of-life care.

  • Ayelet Goldhaber at Meet Our Pediatric Gastroenterology Team
    Ayelet Goldhaber, MS, RD
    Registered Dietitian

    Ms. Goldhaber completed her dietetic internship through NYU at Montefiore Medical Center and holds a master’s degree in clinical nutrition and dietetics from NYU. Ms. Goldhaber is a great resource for all things relating to food and nutrition, from symptom management to weight maintenance to healthy snack ideas.

  • Kimberly Harrison at Meet Our Pediatric Gastroenterology Team
    Kimberly Harrison, CPNP
    Nurse Practitioner

    Ms. Harrison is a graduate of Columbia University’s School of Nursing, where she received both her bachelor of science and master of science degrees. She also received her bachelor of arts in psychology from Colorado College. Ms. Harrison has been a pediatric nurse practitioner since 2007, providing care for children with chronic illnesses.

  • Alyssa Pettingill at Meet Our Pediatric Gastroenterology Team
    Alyssa Pettingill, MS, CCLS
    Child Life Specialist

    Ms. Pettingill holds bachelor’s and master’s degrees in child and family development from San Diego State University. As a child life specialist, she helps children of all ages understand the medical experience by providing age-appropriate diagnosis education, procedural preparation and support, and therapeutic play opportunities.

  • Jamie Rieff at Meet Our Pediatric Gastroenterology Team
    Jamie Rieff, MSN, RN
    Registered Nurse

    Ms. Rieff received her master’s degree in nursing from Johns Hopkins University and bachelor’s degree in nutrition from Syracuse University. As a nurse, Ms. Rieff has a background in critical care. She enjoys caring for children who have a broad range of conditions, and supporting their families throughout diagnosis and treatment.

  • Hannah Sirois at Meet Our Pediatric Gastroenterology Team
    Hannah Sirois, BSN, RN, CPN
    Senior Staff Nurse

    Ms. Sirois received her bachelor’s degree in nursing from Villanova University and has experience working with children with various medical and surgical conditions. She enjoys working with patients and their families to help them understand their medications, treatments, procedures, and conditions.

  • Deborah Tagliareni at Meet Our Pediatric Gastroenterology Team
    Deborah Tagliareni, MS, RD, CDN
    Children’s Services Clinical Nutrition Manager

    Ms. Tagliareni received her master’s degree in clinical nutrition from NYU and completed her dietetic internship at NYU Langone. She spearheads programs that provide educational nutrition activities and events for patients, families, and the professional community. She is also involved in clinical nutrition services within Hassenfeld Children's Hospital. Ms. Tagliareni previously served as an inpatient dietitian at NYU Langone and has also worked in marketing and catering management.