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Professional Memberships

  • American Board of Surgery, Board Certified October 2001
  • American Society of Metabolic & Bariatric Surgery, Full Member
  • Society of Robotic Surgery Member
  • Society of American Gastrointestinal Endoscopic Surgeons (SAGES), Full Member
  • International Federation of Surgery for Obesity
  • Medical License, New York State Board of Medicine

Scientific Presentations & Publications

  • Perioperative Outcomes of Robotic Sleeve Gastrectomy Using 60mm Automatic Compression Stapler
    Ahmad A, Arellano JJ, Agarwala A
    Presented at IFSO EC 2019 Lyon, France May 2, 2019
    Awarded first place in the video section
  • Prevalence of Dumping Syndrome After Laparoscopic Sleeve Gastrectomy and Comparison with Laparoscopic Roux-en-Y Gastric Bypass
    Ahmad A, Baldwin Kornrich D, Krasner H, Eckardt S, Ahmad Z, Braslow AM, Broggelwirth B
    Obesity Surgery (2019)
  • Robotic Surgery: Current perceptions and the clinical evidence
    Ahmad A, Ahmad ZF, Carleton JD, Agarwala A.
    Surgical Endoscopy (2017) 31:255
  • Prevalence of dumping syndrome after laparoscopic sleeve gastrectomy and comparison with laparoscopic roux-en-Y gastric bypass
    Ahmad A, Kornrich D, Krasner H, Braslow AM, Broggelwirth B, Eckardt, S
    Paper Presentation ASMBS 34th Annual Meeting. October 29-November 2, 2017
  • Laparoscopic versus robotic-assisted roux-en-Y gastric bypass: a retrospective, single-center study of early perioperative outcomes at a community hospital
    Carleton JD, Ahmad ZF, Agarwala A, Ahmad A.
    Surgical Endoscopy (2016) 30(9):3792-6
  • A percutaneous technique of liver retraction in laparoscopic bariatric and upper abdominal surgery
    Ahmad A, Arellano JJ, Agarwala A, Ahmad ZF
    Surg Obes Relat Dis. 2016 Sept – Oct;12(8): 1626-1629
  • Prospective trial comparing the outcome of the addition of greater curvature plication to laparoscopic banding versus laparoscopic gastric banding alone
    Ahmad A, Agarwala A, Ahmad ZF, Arellano J, Braslow AM, Messineo L.
    Top Poster/Poster of Distinction & Podium Presentation. 2015 SAGES Annual Meeting. April 2015, Nashville, TN.
  • Prospective trial comparing hunger, portion size, percentage of excess weight loss and band adjustments in laparoscopic banded gastric plication vs. laparoscopic adjustable gastric band
    Braslow AM, Messineo L, Kornrich D, Korpi E, Drepaniotis N, Folken L, Ahmad A, Agarwala A
    30th Annual American Society of Metabolic and Bariatric Surgery Conference, Poster A369, November 2013, Atlanta, GA.
  • Early experience with natural orifice trans-umbilical surgery gastric bypass (NOTUS) using needlescopic instruments
    Ahmad A, Agarwala A
    12th Annual SAGES Conference Poster, Program # P439, April 2012, San Diego, CA.
  • Natural orifice transumbilical gastric bypass using needlescopic instruments
    Ahmad A, Agarwala A
    28th Annual ASMBS Conference Emerging Technology Session Presentation. June 2011, Orlando, FL.
  • A technique of enteroenterostomy to prevent alimentary limb obstruction in laparoscopic roux-en-Y gastric bypass
    Ahmad A, Cho K, Brathwaite C
    Journal of the American College of Surgeons, January 2004
  • Omental gastrointestinal stromal tumor presenting as intraabdominal abscess
    Syed S, Pupkova L, Ahmad A
    Surgical Rounds, November 2003
  • Biliopancreatic limb obstruction resulting in staple line dehiscence. Image of the month.
    Cho K, Brathwaite C, Ahmad A
    Archives of Surgery, 2003 – 138:455
  • A new technique of enteroenerostomy to prevent alimentary limb narrowing in roux-en-Y gastric bypass
    Ahmad A, Cho K, Brathwaite C
    Society of American Gastrointestinal Surgeons Conference Poster, LA, March 2003
  • Essential fatty acid deficiency in patients with chronic liver disease is not reversed with short term intravenous lipid supplementation
    Duerksen DR, Nehra V, Palombo JD, Ahmad A, Bistrian BR. (Journal Article)
    Digestive Diseases and Sciences. 44(7):1342-8, 1999 Jul.
  • An evaluation of energy expenditure in hospitalized severed underweight patients
    Ahmad A, Deurksen DR, Munroe S, Bistrian BR. (Journal Article)
    Nutrition. 15 (5):384-8, 1999 May. 384-388
  • Risk of thrombotic complications in AIDS patients on home central parenteral nutrition
    Deurksen DR, Ahmad A, Mascoli E, (Journal Article)
    Journal of Parenteral and Enteral Nutrition – 20 (4) 302-5. July-Aug 1996.
  • Reliability of resting energy expenditure measurements using a ‘pulmonary artery catheter’ in septic patients
    Ahmad A, Bistrian B, Dobkin E
    Awarded second prize for this abstract presented at the Connecticut chapter of the “American College of Surgeons”. Annual Meeting on December 6, 1995
  • Nutritional support of the critically ill diabetic
    Ahmad A, Bistrian B
    Journal of Critical Illness, Vol. 10, Sep 1995, Page 109.
  • Skeleton in the hospital closet: Malnutrition in the hospitalized patient
    Blackburn G, Ahmad A
    Nutrition Vol 11 (2nd supplement), March-April 1995, Pages 193-195
  • Nutritional support of the surgical patient
    Ahmad A, Blackburn G
    General Surgery and Laparoscopy News, April 1995
  • A new technique of open laparoscopy
    Ahmad A, Quayle AR. (Journal Article)
    British Journal of Surgery - .80, 1186. 1993 Sept.
  • Abolition of post-prandial alkaline after vagotomy
    Ahmad A, (Original Research Paper)
    British Journal of Surgery 73-917-19, 1986 Nov (Original research paper describing a new test for completeness of vagotomy)

IRBs as Principal Investigator

  • Incidence of Dumping Syndrome in Post-Operative Sleeve Gastrectomy and RNY Gastric Bypass Patients
  • Comparison of Per-Operative Outcomes of Laparoscopic Extraperitoneal Inguinal Hernia Repair and Robotic-Assisted Transperitoneal Inguinal Hernia Repair
  • The Relationship Between Laparoscopic Sleeve Gastrectomy and Symptoms of Gastroesophageal Reflux Disease: A Retrospective Review
  • Randomized Prospective Trial Comparing Analgesic Efficacy of Liposomal Bupuvicaine Versus On-Q® Pain Relief System in Laparoscopic Bariatric Surgical Patients
  • Prevalence of Thiamine Deficiency Before and After Bariatric Surgery
  • Laparoscopic Versus Robotic-Assisted Roux-en-Y Gastric Bypass: A Retrospective, Single Center Study of Early Peri-Operative Outcomes at a Community Hospital
  • Peri-Operative Outcomes of Robotic Sleeve Gastrectomy Using Sureform 60 Stapler Compared to Laparoscopic Sleeve Gastrectomy
  • Outcome of Revision Bariatric Surgeries in Community Bariatric Center of Excellence

Professional Healthcare Experience

DIRECTOR, BARIATRIC CENTER OF EXCELLENCE (4/2004 - PRESENT)
MEDICAL DIRECTOR, BARIATRIC CENTER OF EXCELLENCE AT MATHER HOSPITAL NORTHWELL HEALTH

DIRECTOR, ROBOTIC CENTER OF EXCELLENCE (2015 - PRESENT)
DIRECTOR, ROBOTIC CENTER OF EXCELLENCE AT MATHER HOSPITAL NORTHWELL HEALTH

CLINICAL ASSISTANT PROFESSOR OF SURGERY
STONY BROOK UNIVERSITY SCHOOL OF MEDICINE (2001 – PRESENT)

Attending General and Bariatric Surgeon
Attending Surgeon, Mather Hospital Northwell Health
Attending Surgeon, St. Charles Hospital

CLINICAL INSTRUCTOR, UNIV. OF VIRGINIA HOSPITAL (7/2000 – 6/2001)
CLINICAL INSTRUCTOR IN LAPAROSCOPIC SURGERY AT UNIVERSITY OF VIRGINIA HOSPITAL
SAGES listed Advanced Laparoscopy Fellowship
Attending Surgeon, University of Virginia Hospital

RESIDENT, GENERAL SURGERY (1995-2000)
CHIEF RESIDENT, GENERAL SURGERY (1999-2000)

UNIVERSITY OF CONNECTICUT INTEGRATED SURGICAL RESIDENCY
Based at the following hospitals:
Hartford Hospital, St. Francis Hospital, John Dempsey Hospital & New Britain General Hospital

CLINICAL FELLOW IN SURGERY
FELLOW, SURGICAL NUTRITION & METABOLIC CARE (1/1994 – 6/1995)

CLINICAL FELLOW IN SURGERY
FELLOW, SURGICAL NUTRITION & METABOLIC CARE AT HARVARD MEDICAL SCHOOL
New England Deaconess Hospital

SURGICAL REGISTRAR, UNITED KINGDOM (6/1989 – 10/1993)
SURGICAL REGISTRAR, UNIVERSITY OF LIVERPOOL ROTATION IN UNITED KINGDOM
10/1992 – 9/1993: Whinston Hospital, Merseyside, UK
10/1990 – 9/1992: Macclesfield General Hospital, UK
6/1989 – 9/1990: Princess Margaret Hospital, UK

SURGICAL REGISTRAR, ISLAMIA HOSPITAL (1988 - 1989)
SURGICAL REGISTRAR, DEPARTMENT OF SURGERY, ISLAMIA HOSPITAL ,CALCUTTA, INDIA

POST GRADUATE SURGICAL TRAINEE (1986 - 1988)
POST GRADUATE SURGICAL TRAINEE, MEDICAL COLLEGES & HOSPITALS ,CALCUTTA, INDIA