Our bariatric surgeons, nutritionists and psychologists are each involved in providing you with ongoing support through your weight loss surgery and beyond, helping you understand the benefits, as well as the changes and challenges, which accompany life after bariatric surgery.

Our Physicians

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Hesham Atwa, M.D., FACS, FASMBS

Founder & Medical Director, Long Island Laparoscopic Doctorssm

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Dr. Atwa is a skilled surgeon known for his caring and compassionate bedside manner, garnishing awards as Top Surgeon and the Most Compassionate Doctor awards (2011 – 2017) and recipient of the Theodore Roosevelt award from John T. Mather and St. Charles Hospitals in 2018. He is board certified in general surgery with a mini-fellowship in bariatric surgery. He currently is Chief of Surgery and member at large of the medical board at Mather Hospital / Northwell Health and Director / Chief of Surgery, Director of Robotic Surgery and member of the medical board at St. Charles Hospitals, Port Jefferson, NY.

  • Medical School:

    Ains Shams University School of Medicine, Cairo, Egypt

  • Internship/Residency:

    University of Illinois, Chicago, IL

  • Board Certifications:

    General Surgery

  • Fellowship Training:

    Laparoscopic & Bariatric Surgery - University of Texas and the Cleveland Clinic

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“I enjoy performing bariatric surgery because of the effect it has on our patient lives and the lives of their families.”

Jon Leung, D.O., FACOS

Minimally Invasive & Bariatric Surgeon, Long Island Laparoscopic Doctorssm

“I enjoy performing bariatric surgery because of the effect it has on our patient lives and the lives of their families.”

Dr. Leung, FACOS is a general surgeon with advanced specialty training in minimally invasive surgery as well as bariatric surgery. He focuses on minimally invasive techniques for the treatment of various surgical problems in the abdomen. In addition to performing laparoscopic procedures on the esophagus, stomach, gallbladder, appendix, colon, and abdominal hernias, he also performs weight loss surgeries such as laparoscopic adjustable gastric banding, sleeve gastrectomy and gastric bypass.

  • Medical School:

    New York College of Osteopathic Medicine , New York, NY

  • Internship/Residency:

    St John’s Episcopal Hospital, Far Rockaway, NY

  • Fellowship Training:

    Advanced GI and Minimally- invasive Bariatric Surgery – Staten Island University Hospital, NY

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“I am committed to providing my patients with compassionate care and guidance in their time of need. My goal is to help my patients achieve optimal surgical results to reach their weight loss goals and improve their quality of life.”

Ghaith Khair, M.D.

Minimally Invasive & Bariatric Surgeon, Long Island Laparoscopic Doctorssm

“I am committed to providing my patients with compassionate care and guidance in their time of need. My goal is to help my patients achieve optimal surgical results to reach their weight loss goals and improve their quality of life.”

Dr. Khair joined Long Island Laparoscopic Doctors in November 2019 coming from St Agnes Hospital in Baltimore where he completed a fellowship in Minimally Invasive and Bariatric Surgery in one of the busiest programs in the state of Maryland. During the fellowship. Dr Khair performed over 500 cases of laparoscopic, bariatric and endoscopic procedures including sleeve gastrectomy, Roux-en-Y gastric bypass and revisional surgeries. Dr Khair trained in robotic surgery during his fellowship obtaining special certification to use the da Vinci robot system. He also gained experience in foregut surgery (the treatment for esophageal and gastric diseases) and is trained to perform laparoscopic hiatal hernia repairs and Nissen fundoplication for gastroesophageal reflux.

  • Medical School:

    University of Jordan, Faculty of Medicine M.B.B.S. - Amman, Jordon

  • Internship/Residency:

    Metropolitan Group Hospitals Program — UIC - Chicago, Illinois

  • Board Certifications:

    General Surgery - American College of Surgeons

  • Fellowship Training:

    Bariatric and Minimally Invasive Surgery — Saint Agnes Hospital - Baltimore, MD

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“One of great joys of my life has been to combine my dedication to medicine with my passion for adventure. I was a high-altitude physician / researcher for an Everest Extreme Expedition and Medical Director of a team of Long Island physicians traveling to Zamora, Ecuador to provide medical care and instruction to local surgeons in laparoscopic procedure.”

Nicholas P. Craig, M.D., FACS

Minimally Invasive Laparoscopic General Surgeon

“One of great joys of my life has been to combine my dedication to medicine with my passion for adventure. I was a high-altitude physician / researcher for an Everest Extreme Expedition and Medical Director of a team of Long Island physicians traveling to Zamora, Ecuador to provide medical care and instruction to local surgeons in laparoscopic procedure.”

Dr. Nicholas Craig, is the newest member of our surgical team, however, Dr. Craig is no stranger to this community. He has been in private practice and a member of the staff of both John T. Mather Memorial Hospital and St. Charles Hospital and Rehabilitation Center for over 30 years. He is a Diplomat of the American Board of Surgery and a Fellow of the American College of Surgeons. He is a general surgeon specializing in advanced minimally invasive laparoscopic procedures and the care of breast diseases. He cares for both the adult and pediatric populations. Dr. Craig is a native Long Islander who grew up in Levittown and went on to attend Fordham University. He earned his medical degree from the University of Rome, Italy. Upon completing his internship and residency at the Hospital of St. Raphael, a division of the Yale University School of Medicine, he returned to Long Island and established a private practice in Port Jefferson.

  • Medical School:

    University of Rome, Rome, Italy

  • Internship/Residency:

    Hospital of St. Raphael / Yale University School of Medicine - New Haven, CT

  • Board Certifications:

    General Surgery - American College of Surgeons

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“I am committed to helping bariatric patients in our program to lose excess weight & reduce their risk factor for diseases. Bariatric surgery changes people’s lives.”

Toniann Balistreri, Bariatric Coordinator

Bariatric Coordinator

“I am committed to helping bariatric patients in our program to lose excess weight & reduce their risk factor for diseases. Bariatric surgery changes people’s lives.”

“Over my nine years while working with patient’s I successfully helped them learn how to have a lifetime commitment to a healthy lifestyle. Afterwards, it is a rewarding experience to see them full of life and off many or all medications they may have been taking.”

Toniann enjoys educating, motivating and being the cheerleader that patients want and need during their weight loss journey and after. “It gives me a fulfilling feeling to see patients transition into a happy, healthy and positive version of themselves and knowing I was a part of it and made a difference in their lives.”  Toniann is also a coach for our patients on our Baritastic mobile app for our weight loss surgery patients. The app is free and can be downloaded onto a patient’s cell phone.  You can track nutrition, access great online resources, track your steps and much more. If you are considering weight loss surgery and would like to learn more about our 360-degree approach to nutrition, exercise, counseling, and education please feel free to contact Toniann with your questions.

  • Board Certifications:

    Certified Clinical Medical Assistant CCMA

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Our Staff

leslie

Leslie Welsch, MS, RD, CDE, CDN

Dietitian-Nutritionalist, Long Island Laparoscopic Doctorssm

leslie

Leslie is a Registered Dietitian, Certified Diabetes Educator, and Certified Dietitian-Nutritionist. Leslie received her Bachelor of Science in Dietetics from The University of Delaware. She received her Master of Science in Medical Biology Nutrition from Long Island University, CW Post where she earned the Outstanding Nutrition Award for her thesis work on Diabetes. Leslie began her career in the hospital setting, but quickly began working for various physicians on Long Island counseling their patients privately.

  • Medical School:

    Delaware University

  • Board Certifications:

    Diabetes Educator, Dietitian-Nutritionist

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Joan Vitulli

Patient Reception

We are dedicated to providing you caring, compassionate care. We believe that one of the biggest differences between Long Island Laparoscopic Doctorssm and other medical offices that you may choose to consider is our staff. They are trained and dedicated to being Accessible, Knowledgeable, Compassionate and Responsive.

Listen to the experiences of our past patients. From scheduling convenient appointments, to answering questions about health insurance you will find that the office staff really does makes a difference

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