Pediatric Endocrinology · New York
Ilene Fennoy, MD, MPH
Professor of Pediatrics at Columbia University Irving Medical Center. For more than 45 years I have cared for children with growth, hormonal and weight related conditions, and trained the doctors who will care for them next.
Clinical focus
Children with complex growth and hormonal conditions
I am a board certified pediatric endocrinologist and an attending physician at NewYork-Presbyterian Morgan Stanley Children's Hospital and Harlem Hospital Center. At Columbia I am Medical Director of the Comprehensive Adolescent Bariatric Surgery Program and Director of the POWER Program for Overweight Education and Reduction.
My research looks at the conditions that travel with obesity in children and adolescents: insulin resistance, cardiovascular risk, and how young people fare after bariatric surgery.
Childhood obesity and insulin resistance
Exercise programmes, nutrition education and, for some adolescents, bariatric surgery, each studied for its effect on young patients.
Growth and Klinefelter syndrome
Care for children whose growth or hormonal development needs a specialist, including boys with Klinefelter syndrome.
Bone health
Bone health in children and adolescents, as part of the wider picture of endocrine care.
Childhood obesity is “one of the most pressing health challenges of today.”
New medications, precision medicine and genetic research are changing how doctors approach weight and growth disorders in children.
Career
From Harlem Hospital to Columbia
My career began at Harlem Hospital and has been built in New York City's public and academic hospitals.
Chief of Pediatric Endocrinology
Harlem Hospital
Vice President of Clinical Affairs
New York City Health and Hospitals Corporation
Director, Division of Pediatric Endocrinology
St. Luke's-Roosevelt Hospital
Professor of Pediatrics
Columbia University Irving Medical Center, with attending appointments at NewYork-Presbyterian Morgan Stanley Children's Hospital and Harlem Hospital Center
Medical Director and Program Director
Comprehensive Adolescent Bariatric Surgery Program, and the POWER Program for Overweight Education and Reduction, Columbia
Education and training
- BA, Psychology, Stanford University, 1968
- MD, University of California San Francisco School of Medicine, 1973
- Internship and residency, Montefiore Medical Center, the Bronx
- Fellowship in human nutrition, Columbia University
- Clinical associate training, National Institutes of Health
- MPH, Health Policy and Administration, Columbia University, 1993
- Board certification, Pediatrics and Pediatric Endocrinology
Mentoring
The doctors who come next
I have trained many fellows in pediatric endocrinology, and several of them now lead programmes in pediatric obesity of their own. Their success is one of the things I am proudest of.
Teaching and mentoring are how a field keeps up with new treatments and new science, so they remain at the centre of my work.
“Adaptability and constant learning remain the keys to progress in pediatric endocrinology.”
Recognition and service
Honours, leadership and publications
Honours
- Outstanding Leadership in Endocrinology Award, Endocrine Society, 2025 Laureate Awards
- Best Doctors in New York, New York magazine, listed for more than fifteen consecutive years
- Certificate of appreciation, American Academy of Pediatrics
- Alumni Community Service Award, Northfield Mount Hermon School
Leadership
- Board member, Women in Medicine Legacy Foundation, where I chair the Alma Dea Morani Awards Committee
- Co-chair, Equity, Diversity and Inclusion Task Force, Pediatric Endocrine Society
This work is about opening doors in medicine for women and for groups that have been underrepresented in it.
Publications
My articles have appeared in the Journal of Clinical Endocrinology and Metabolism, the Journal of Obesity and other journals.
Gallery
Where the work happens
Every picture of Dr. Fennoy on this page is an AI-generated illustration, produced with her approval from a reference photograph. They are not photographs of real events.