David Parker, MD

Reported procedures

• Dr. Parker performs a range of bariatric procedures designed to support significant and long-term weight loss. His surgical expertise includes gastric bypass surgery Source ↗
• laparoscopic gastric bypass surgery Source ↗
• sleeve gastrectomy Source ↗
• gastrectomy Source ↗
• gastric restrictive procedures with partial gastrectomy or jejunojejunostomy Source ↗
• and revision of gastric anastomosis or restrictive procedures. He also provides comprehensive bariatric surgery for the treatment of obesity. Source ↗
• Gastric bypass Source ↗
• Revisional bariatric surgery Source ↗
• Gastric band procedures Source ↗
• Duodenal switch Source ↗
• Bariatric surgery Source ↗

Source-reported information; confirm current details directly.

Reported credentials

• American Board of Surgery Source ↗
• Board Certified in General Surgery Source ↗
• Surgery Source ↗

Source-reported information; confirm current details directly.

Reported affiliations

• GEISINGER CLINIC Source ↗

Source-reported information; confirm current details directly.

Selected publications

• Too old to operate? Retrospective outcomes of laparoscopic paraesophageal hernia repair in nonagenarians. · 2026 Source ↗
• Opioid-sparing multimodal pain regimen in combination with intraoperative transversus abdominis plane block reduces opioid use after laparoscopic paraesophageal hernia repair. · 2026 Source ↗
• Comment on: Robotic primary Roux-en-Y gastric bypass is independently associated with increased 30-day mortality: a 2023 MBSAQIP analysis of 50,365 patients. · 2026 Source ↗
• Roux-en-Y gastric bypass results in long-term durable weight loss and diabetes remission: a single center, > 15 year outcomes. · 2026 Source ↗
• The longitudinal inefficiency of robotic bariatric surgery: can we finally agree we are over the learning curve and robotic bariatric surgery just takes longer? · 2026 Source ↗
• Feasibility and short-term results of bariatric destination care: experience from a single Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program-accredited center. · 2025 Source ↗
• Trends in first assistant in bariatric surgery: a 5 year analysis. · 2025 Source ↗
• Paraesophageal hernia repair combined with Roux-en-Y gastric bypass reduces short-term hernia recurrence with added metabolic benefit in patients with BMI ≥ 35: A 15-year experience. · 2025 Source ↗
• Robotic approach does not eliminate first assistant in bariatric surgery compared to laparoscopy. · 2025 Source ↗
• Bariatric surgery significantly reduces progression from prediabetes to diabetes compared with the general population: 15-year single-institution data. · 2025 Source ↗
• Biliopancreatic diversion with duodenal switch results in superior weight loss and diabetes remission in patients with baseline body mass index ≥50. · 2025 Source ↗
• Long-term incidence of bariatric related procedures following laparoscopic gastric bypass: 15 to 20 years single institution experience. · 2025 Source ↗
• Ambulatory discharge of patients undergoing sleeve gastrectomy results in significantly more adverse outcomes. · 2024 Source ↗
• Late-"de novo" paraesophageal hernia after Roux-en-Y gastric bypass (RYGB)-should it be repaired? · 2024 Source ↗
• Examining emergency department utilization following bariatric surgery. · 2024 Source ↗
• Laparoscopic sleeve gastrectomy conversion to gastric bypass: conversion rate over time, predictors of conversion, and weight loss outcomes. · 2024 Source ↗
• Rates of Recurrent Marginal Ulcer in Gastric Bypass Patients Undergoing Revisional Surgery. · 2023 Source ↗
• Bariatric revisional surgery for gastrogastric fistula following Roux-en-Y gastric bypass positively impacts weight loss. · 2023 Source ↗
• Revision paraesophageal hernia repair outcomes in patients with typical and atypical reflux. · 2023 Source ↗
• Is Robotic Revisional Bariatric Surgery Justified? An MBSAQIP Analysis. · 2022 Source ↗
• Clinical and financial outcomes of per-oral endoscopic myotomy compared to laparoscopic heller myotomy for treatment of achalasia. · 2023 Source ↗
• Stratified Preoperative A1c is not Significantly Associated With Clavien-Dindo Major Complications Following Bariatric Surgery in the MBSAQIP Database. · 2022 Source ↗
• Laparoscopic revision paraesophageal hernia repair: a 16-year experience at a single institution. · 2023 Source ↗
• A comparative evaluation of robotic and laparoscopic Roux-en-Y gastric bypass: a critical evaluation on the impact of postoperative pain and opioid requirements. · 2022 Source ↗
• Outcomes of Bariatric Surgery in Patients on Chronic Opioids: Can Bariatric Surgery Assist with Decreasing Long-term Opioid Utilization? · 2022 Source ↗
• Is there a role for bariatric surgery in patients with severe obesity and type 1 diabetes? · 2022 Source ↗
• Impact of Urinary Catheterization on Postoperative Outcomes After Roux-En-Y Gastric Bypass Surgery in Propensity-Matched Cohorts. · 2023 Source ↗
• Asymptomatic Cholelithiasis and Bariatric Surgery: a Comprehensive Long-Term Analysis of the Risks of Biliary Disease in Patients Undergoing Primary Roux-en-Y Gastric Bypass. · 2021 Source ↗
• The Longitudinal Efficiency of Robotic Surgery: an MBSAQIP Propensity Matched 4-Year Comparison of Robotic and Laparoscopic Bariatric Surgery. · 2020 Source ↗
• A 3-Year MBSAQIP propensity-matched analysis of Roux-en-Y gastric bypass with concomitant cholecystectomy: Is the robotic or laparoscopic approach preferred? · 2021 Source ↗
• Emergency department overutilization following cholecystectomy and inguinal hernia repair. · 2021 Source ↗
• Examining emergency department utilization in the post-foregut surgery patient. · 2021 Source ↗
• Comparison of short-term outcomes following Roux-en-Y gastric bypass in male and female patients using the MBSAQIP database. · 2020 Source ↗
• Overall outcomes of laparoscopic-assisted ERCP after Roux-en-Y gastric bypass and sphincter of Oddi dysfunction subgroup analysis. · 2019 Source ↗
• Equivalent Peri-Operative Outcomes for Laparoscopic Roux-En-Y Gastric Bypass Patients Discharged on Post-Operative Day One. · 2019 Source ↗
• First assistant impact on early morbidity and mortality in bariatric surgery. · 2019 Source ↗
• Bariatric surgery is safe and effective in Medicare patients regardless of age: an analysis of primary gastric bypass and sleeve gastrectomy outcomes. · 2019 Source ↗
• Multimodal Postoperative Pain Control Is Effective and Reduces Opioid Use After Laparoscopic Roux-en-Y Gastric Bypass. · 2019 Source ↗
• Is age a real or perceived discriminator for bariatric surgery? A long-term analysis of bariatric surgery in the elderly. · 2019 Source ↗
• The readmission contradiction: toward clarifying common misconceptions about bariatric readmissions and quality improvement. · 2018 Source ↗
• Laparoscopic paraesophageal hernia repair is safe in elderly patients. · 2017 Source ↗
• Laparoscopic transhiatal esophagectomy for esophageal adenocarcinoma identified at laparoscopic Roux-en-Y gastric bypass. · 2016 Source ↗
• Urgent laparoscopic repair of acutely symptomatic PEH is safe and effective. · 2013 Source ↗

Source-reported information; confirm current details directly.

Professional identifier

NPI: 1902024854

Insurance reported

Aetna

Blue Cross Blue Shield

Cigna

UnitedHealthcare

Reported in source records. Confirm the exact plan, network and procedure with the practice and insurer. Logos identify brands; they do not establish participation.