Jefferson University Hospitals

Provider Profile

Karen Chojnacki, MD, FACS

Jefferson University Physician

Academic Title: Associate Professor
Program Director, General Surgery Residency
Vice Chair for Education

Surgery - Gastrointestinal
Surgery - General
Surgery - Hepato-Pancreatic-Biliary
Surgery - Minimally Invasive
Surgery - Oncology

Make An Appointment

Click to call 1-800-JEFF-NOW (800-533-3669) or

Office Locations

1100 Walnut Street, 5th Floor
Philadelphia PA 19107
Phone: (215) 955-8666
Fax: (215) 923-8222

Medical Services

Years in Practice


Board Certifications

  • Surgery

Hospital Affiliation / Admitting Privileges

  • Thomas Jefferson University Hospital
  • Methodist Hospital Division of Thomas Jefferson University Hospital

Awards and Honors

Philadelphia Magazine's Top Docs 2017,2011

Personal Statement

I specialize in the surgical treatment of esophageal and gastrointestinal disorders including GERD, achalasia, esophageal cancer, and gastric cancer. I have advanced training in minimally invasive laparoscopic and robotic surgery. I also perform many general surgery procedures including cholecystectomy (gallbladder removal) and hernia repair (hiatal, inguinal, paraesophageal and ventral).


  • SUNY at Buffalo School of Medicine, Medical School


  • Thomas Jefferson University Hospital


  • Thomas Jefferson University Hospital


  • University of Southern California Medical Center

Recent Publications

Increasing resident utilization and recognition of the critical view of safety during laparoscopic cholecystectomy: a pilot study from an academic medical center

Do female surgeons learn or teach differently?

A taxonomy of perioperative surgical learning: Trending resident skill acquisition

Long-term functional outcomes of laparoscopic resection for gastric gastrointestinal stromal tumors

Dr. Mary Edwards Walker: years ahead of her time

Minimally invasive esophagectomy provides significant survival advantage compared with open or hybrid esophagectomy for patients with cancers of the esophagus and gastroesophageal junction

Grit: A marker of residents at risk for attrition?

Abdominal distension in a middle-aged woman

Gastroduodenal intussusception of a gastrointestinal stromal tumor (GIST): Case report and review of the literature

Major perioperative morbidity does not affect long-term survival in patients undergoing esophagectomy for cancer of the esophagus or gastroesophageal junction

Laparoscopic approaches to gastric gastrointestinal stromal tumors: An institutional review of 57 cases

Combined hepatic arterial embolization and hepatic ablation for unresectable colorectal metastases to the liver

Robot-assisted minimally invasive esophagectomy is equivalent to thoracoscopic minimally invasive esophagectomy

Massive Portal Venous Air and Pneumatosis Intestinalis Associated with Cocaine-Induced Mesenteric Ischemia

Oncologic efficacy is not compromised, and may be improved with minimally invasive esophagectomy

Is gastrectomy safe in the elderly? A single institution review

Optimal technical management of stump closure following distal pancreatectomy: A retrospective review of 215 cases

Jefferson Medical College of Thomas Jefferson University, the Department of Surgery: from past to present.

Implementation of a critical pathway for distal pancreatectomy at an academic institution

Impact of Obesity on Perioperative Morbidity and Mortality after Pancreaticoduodenectomy