Ilene Fennoy, MD

Endocrinology, Pediatric Endocrinology, Pediatrics
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Accepting New Patients
Treats Children
Virtual Visits/Telehealth
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Dr. Fennoy is a board certified pediatric endocrinologist with additional certification as a Physician Nutrition Specialist as well as an Obesity Medicine specialist. She received her Doctor of Medicine degree form the University of California, San Francisco and her Masters Degree in Public Health from Columbia University, School of Public Health. Her pediatric training was done in the Department of Social Pediatrics, Montefiore Hospital, Bronx, New York, Nutrition training at the Institute of Human Nutrition, Columbia University and Pediatric Endocrine training with the Pediatric Medicine Branch off the National Institute of Child Health, Bethesda, Maryland.

She has focused much of her research on the comorbidities identified in morbidly obese children and adolescents as well as the impact bariatric surgery has on these problems. In addition, she has been involved in a school based study to evaluate the impact of a nutrition education curriculum and exercise program on the changes in insulin resistance in middle school children.

Areas of Expertise / Conditions Treated

  • Disorder of Calcium Metabolism
  • Growth Disorder
  • Obesity
  • Osteoporosis
  • Type 2 Diabetes Mellitus

Academic Appointments

  • Professor of Pediatrics at CUMC

Administrative Titles

  • Medical Director Comprehensive Adolescent Bariatric Surgery Program
  • Director, POWER Program for Overweight Education and Reduction

Hospital Affiliations

  • NewYork-Presbyterian / Columbia University Irving Medical Center


  • Female

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Virtual Visits/Telehealth

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Phone Appointments

New and Existing Patients:

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Insurance Accepted

Affinity Health Plan

  • Essential Plan
  • Medicaid Managed Care

Amida Care

  • Special Needs


  • EPO
  • Great West (National)
  • HMO
  • Medicare Managed Care
  • POS
  • PPO


  • Medicare Managed Care
  • PPO


  • ConnectiCare
  • EPO
  • Essential Plan
  • HMO
  • Medicaid Managed Care
  • Medicare Managed Care
  • POS
  • PPO
  • Select Care (Exchange)
  • Vytra

Empire Blue Cross Blue Shield HealthPlus

  • Child/Family Health Plus
  • Essential Plan
  • Medicaid Managed Care

Fidelis Care

  • Child/Family Health Plus
  • Essential Plan
  • Medicaid Managed Care
  • Medicare Managed Care


  • Child/Family Health Plus
  • Leaf (Exchange)
  • Medicaid Managed Care
  • Medicare Managed Care

Local 1199

  • Local 1199

MagnaCare (National)

  • MagnaCare


  • Railroad
  • Traditional Medicare


  • Multiplan

MVP Health Care

  • Child/Family Health Plus
  • Essential Plan
  • HMO
  • Medicaid Managed Care

Quality Health Management

  • Quality Health Management


  • Compass (Exchange)
  • Empire Plan
  • HMO
  • Medicaid (Community Plan)
  • Medicare Managed Care
  • POS
  • PPO


  • Medicaid Managed Care
  • Medicare Managed Care

World Trade Center Health Plan

  • World Trade Center Health Plan

*Please contact the provider’s office directly to verify that your particular insurance is accepted.

Credentials & Experience

Education & Training

  • University of California San Francisco School of Medicine
  • Internship: Montefiore Medical Center
  • Residency: Montefiore Medical Center
  • Fellowship: NewYork-Presbyterian Hospital/Columbia University Medical Center
  • Fellowship: National Institutes of Health

Board Certifications

  • Pediatrics
  • Pediatric Endocrinology
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Childhood obesity represents a serious health threat for children and the next generation of adults involving cardiovascular, diabetes, and fatty liver co-morbidities among others. Current estimates identify 18.5% of all children 2 to 19yr of age with obesity and show limited potential for these children to outgrow this problem. Dr. Fennoy’s research seeks to understand the relationships between the factors that contribute to morbidity in pediatric obesity so that interventions may be targeted to both prevent and treat these conditions. This specifically applies to understanding the role of insulin resistance and its relationship to risk factors for cardiovascular morbidity in the developing child and the interventions and their timing that modulate the development of these comorbidities. Currently her efforts focus on:

1) the child/adolescent presenting with obesity with identification of when and how to intervene to limit progression to morbidity;

2) the adolescent with morbid obesity and the changes they experience in health post bariatric surgery including changes in bone health; and

3) disorders of increased body fat with low bone density such as Klinefelter syndrome.

Research Interests

  • Bone health
  • Childhood obesity
  • Klinefelter syndrome

Clinical Trials

NCT02311894 A Phase IV, Multicenter, Open-Label Study of the Immunogenicity of Nutropin AQ® V1.1 [Somatropin (rDNA Origin) Injection] Administered Daily to Naïve Growth Hormone-Deficient Children (iSTUDY) - This study is ongoing, but not recruiting participants.