William Middlesworth, MD

William Middlesworth, MD Specialties: Pediatric Surgery, General Surgery, Cancer Care

William Middlesworth, MD
Specialties: Pediatric Surgery, General Surgery, Cancer Care
phone icon
checkmark iconAccepting new patients
One of America's Top Doctors - Castle Connolly Top Doctors
Rated one of New York Magazine's Best Doctors


ColumbiaDoctors - 15 North Broadway
15 North Broadway
Floor Lower Level, Suite G
White Plains, NY 10601
Other Locations

Additional Locations for William Middlesworth, MD

  • phone icon
    3959 Broadway
    Suite 216B
    New York, NY 10032
  • phone icon
    685 White Plains Road
    Eastchester, NY 10709

insurance iconinsurance icon
Insurances Accepted

Please contact the doctor's office to verify that your insurance is accepted.

  • Affinity Health Plan
  • Amida Care
  • Emblem/GHI
  • Emblem/Hip
  • Empire Blue Cross Blue Shield Healthplus
  • Empire Blue Cross/Blue Shield
  • Fidelis Care
  • Healthfirst
  • Local 1199
  • Magnacare (National)
  • Multiplan
  • MVP Health Care
  • Oxford Health Plans
  • Quality Health Management
  • UnitedHealthcare
  • WellCare

about iconabout icon
About William Middlesworth, MD

Dr. William Middlesworth joined the medical staff of Morgan Stanley Children's Hospital of NewYork-Presbyterian/Columbia (MSCHONY), Division of Pediatric Surgery in 1997. He currently serves as director of the Pediatric ECMO Program, and Residency Program Director of the Pediatric Surgical Fellowship. Dr. Middlesworth has founded and leads the Pediatric Thyroid Center and the REACH (Researching Esophageal Atresia for Children's Health) Clinic.

A graduate of Dartmouth College, Dr. Middlesworth spent two years in the Genetics Department at the Boston Children's Hospital on work leading to the identification and characterization of the dystrophin gene, important in the pathophysiology of muscular dystrophy. He went on to medical school at Rutgers University, and completed his general surgery training at the University of Maryland Medical System. During residency he spent a year as a surgical research fellow at the Royal Children's Hospital in Melbourne, Australia. His pediatric surgery fellowship was completed at MSCHONY.

In addition to the responsibilities listed above, Dr. Middlesworth serves on numerous hospital and university committees focused on Quality and Patient Safety, and is the Quality Chair for Columbia Department of Surgery. He is the Surgeon Champion at the Columbia campus for the National Surgical Quality Improvement Project (NSQIP) of the American College of Surgeons. He chairs a multi-institution collaborative to reduce harm and enhance safety in the peri-operative setting that is sponsored by MCIC Vermont, the member-owned malpractice insurance carrier for Columbia, Cornell, New York Presbyterian Hospital, Johns Hopkins Medicine, University of Rochester Medicine and Yale.

Dr. Middlesworth is a fellow of the American College of Surgeons, and the American Academy of Pediatrics. He is a member of numerous professional organizations dedicated to advancing the surgical care of infants and children, including the American Pediatric Surgical Association (APSA), the Eastern Association for the Surgery of Trauma(EAST) and the Extra-corporeal Life Support Organization(ELSO), among others.

Dr. Middlesworth has been selected as a Best Doctor in New York Magazine, and a Castle Connolly Top Doctor. He has received recognition for excellence in teaching, and authored numerous papers in important journals including the Journal of Pediatric Surgery, the Journal of Pediatric Hematology and Oncology and Pediatric Critical Care Medicine.

Hospital Affiliations

  • NewYork-Presbyterian / Columbia University Irving Medical Center
  • NewYork-Presbyterian Lawrence Hospital
  • NewYork-Presbyterian Morgan Stanley Children's Hospital


  • Endocrine Tumor

  • Endoscopy

  • Newborn Surgery

  • Pancreatobiliary Disease

  • Pediatric Cancer

  • Pediatric Minimal Access Surgery

  • Pediatric Trauma


  • Fellowship: Morgan Stanley Children's Hospital of NewYork-Presbyterian
  • Internship: University of Maryland Medical System
  • Medical School: UMDNJ - Robert Wood Johnson Medical School
  • Residency: University of Maryland Medical System

Board Certifications

  • Pediatric Surgery
  • Surgery, General

awards iconawards icon

  • New York Magazine's Top Doctors, 2015-2016