
30 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Middlesworth, Pediatric Surgeon in New York, NY?
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.
What are Areas of Expertise for Dr. Middlesworth?
Dr. William Middlesworth, MD is a highly-rated, board-certified Pediatric Surgeon known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Middlesworth empowers patients to confidently navigate their health journey, specializing in Abdominal Wall Reconstruction, Endocrine Surgery, Pancreatic Surgery, Trauma, and comprehensive wellness support. Serving the New York, NY community, Dr. Middlesworth is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Middlesworth go to medical school and complete their residency?
Fellowship: New York Presbyterian Hospital-Columbia Univ. | Morgan Stanley Children's Hospital of NewYork-Presbyterian
Residency: Ny & Presby Hp-Columbia Campus, Pediatric Surgery-Surgery; Univ Of Md Med Sys, General Surgery | University of Maryland Medical Center | New York Presbyterian Hospital Program
Medical School: Umdnj-Robt W Johnson Med Sch- New Brunswick Nj | Rutgers
Is Dr. Middlesworth board certified as a Pediatric Surgeon?
Yes, Dr. William Middlesworth, MD is board certified by the American Board of Surgery , American Board of Dermatology , American Board of Dermatology since 2007, American Board of Dermatology since 1998
What languages does Dr. Middlesworth speak?
Dr. Middlesworth and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Pediatric Surgeon like Dr. Middlesworth typically treat?
As a Pediatric Surgeon, Dr. Middlesworth diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Middlesworth. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Groin Hernia (One Side)
- Umbilical Hernia
- Ventral Hernia
- Hernia
- Inguinal Hernia
- Unilateral Inguinal Hernia
- Single Groin Hernia
- Hernia in One Groin
- Belly Button Hernia
- Navel Hernia
- Umbilical Rupture
- Abdominal Wall Hernia
- Epigastric Hernia
- Spigelian Hernia
ICD-10 Codes:
- K4090: Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
- K429: Umbilical hernia without obstruction or gangrene
- K439: Ventral hernia without obstruction or gangrene
Also known as:
- Esophageal Atresia
- Birth Defects
- Esophagus Disorder
- Esophageal atresia/tracheoesophageal fistula
- Blocked Esophagus at Birth
- Congenital Esophageal Blockage
- EA
ICD-10 Codes:
- Q390: Atresia of esophagus without fistula
Also known as:
- Single Nontoxic Thyroid Nodule
- Thyroid Disease
- Benign Thyroid Nodule
- Solitary Thyroid Nodule
ICD-10 Codes:
- E041: Nontoxic single thyroid nodule
Also known as:
- Abdominal Pain
- Right Lower Abdominal Pain
- Pelvic Pain
- Stomach Ache
- Belly Pain
- Stomach Pain
- Pain in lower right belly
- RLQ pain
- Right-sided lower abdominal discomfort
ICD-10 Codes:
- R109: Unspecified abdominal pain
- R1031: Right lower quadrant pain
Also known as:
- Acute Appendicitis with Localized Abdominal Infection
- Appendicitis
- Peritoneal Disorder
- Appendicitis with Local Peritonitis
- Localized Abdominal Infection from Appendix
- Early Appendicitis with Infection
ICD-10 Codes:
- K3530: Acute appendicitis with localized peritonitis, without perforation or gangrene
What procedures does a Pediatric Surgeon like Dr. Middlesworth typically perform?
As a Pediatric Surgeon, Dr. Middlesworth performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Middlesworth. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Small Abdominal Hernia Repair
- Inguinal Hernia Repair (Adults and Children 5+)
- Inguinal Hernia Repair for Children
- Ventral hernia repair
- Umbilical hernia surgery
- Epigastric hernia repair with mesh
- Incisional hernia repair
- Groin Hernia Surgery
- Reducible Inguinal Hernia Repair
- First Inguinal Hernia Fix
- Adult Inguinal Hernia Surgery
- Pediatric Inguinal Hernia Surgery
- Groin Hernia Repair in Kids
- Hernia Surgery for Infants
CPT Codes:
- 49591: Repair of anterior abdominal hernia(s) (ie, epigastric, incisional, ventral, umbilical, spigelian), any approach (ie, open, laparoscopic, robotic), initial, including implantation of mesh or other prosthesis when performed, total length of defect(s); less than 3 cm, reducible
- 49505: Repair initial inguinal hernia, age 5 years or older; reducible
- 49500: Repair initial inguinal hernia, age 6 months to younger than 5 years, with or without hydrocelectomy; reducible
Also known as:
- Diagnostic Laparoscopy of Abdomen
- Exploratory Laparoscopy
- Abdominal Scope
- Peritoneal Biopsy
- Omentum Biopsy
CPT Codes:
- 49320: Laparoscopy, abdomen, peritoneum, and omentum, diagnostic, with or without collection of specimen(s) by brushing or washing (separate procedure)
Also known as:
- Esophagus Scope with Balloon Dilation
- Esophageal Balloon Dilation
- Flexible Esophagoscopy with Dilation
- Stretched Esophagus Procedure
CPT Codes:
- 43220: Esophagoscopy, flexible, transoral; with transendoscopic balloon dilation (less than 30 mm diameter)
Also known as:
- Daily ECMO Management (Veno-Arterial)
- Extracorporeal Life Support Management
- Veno-Arterial ECMO Care
- ECMO Daily Physician Management
CPT Codes:
- 33949: Extracorporeal membrane oxygenation (ECMO)/extracorporeal life support (ECLS) provided by physician; daily management, each day, veno-arterial
Also known as:
- Ultrasound-Guided Fine Needle Biopsy
- Biopsy
- Ultrasound
- FNA Biopsy with Ultrasound
- Image-Guided Biopsy
- Fine Needle Aspiration
- First Lesion Biopsy
CPT Codes:
- 10005: Fine needle aspiration biopsy, including ultrasound guidance; first lesion
Does Dr. Middlesworth accept my insurance?
Dr. Middlesworth accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Middlesworth accept in New York, NY?
Dr. Middlesworth in New York, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Allied Benefit Systems
Cigna Group
CVS Health (formerly Aetna)
EmblemHealth
Healthfirst New York
National Benefit Fund
Service Employees International Union (SEIU)
State of Connecticut
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Middlesworth's office located?

NewYork-Presbyterian, Pediatric Surgery
3959 Broadway
Suite 216B
New York, NY 10032
Recognitions
Castle Connolly Doctor’s Choice Awards
Doctor’s Choice - All Time
Among the most nominated for the Castle Connolly Top Doctor recognition across all time
Awards
New York Super Doctors
What is Dr. Middlesworth's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Middlesworth's National Provider Identifier (NPI) number is 1679666440.
What common questions do patients ask about Dr. Middlesworth?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Middlesworth
What is Dr. William Middlesworth's specialty?
Dr. Middlesworth is a Pediatric Surgeon near New York, NY.
What does a Pediatric Surgeon do?
Pediatric Surgeons specializes in the management of surgical conditions in premature infants, newborns, children, and adolescents.
Is this Dr. William Middlesworth affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Middlesworth is affiliated with Newyork-Presbyterian/columbia University Irving Medical Center, Newyork-Presbyterian Hospital/weill Cornell Medical Center, Newyork-Presbyterian Westchester which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Pediatric Surgeon?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Pediatric Surgeon. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is William Middlesworth accepting new patients in New York, NY?
Yes, Dr. William Middlesworth is accepting new patients at this time.
Does Dr. William Middlesworth offer online booking?
Please contact Dr. Middlesworth's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with William Middlesworth?
Please contact Dr. Middlesworth's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. William Middlesworth have?
Dr. William Middlesworth is certified by the American Board of Surgery and American Board of Dermatology.
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