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Gary W. Falk, MD, MS

Gary W. Falk, MD, MS Physician

Clinical Co-Director (Adult GI), Joint Center with CHOP Co-Director, Esophagology and Swallowing Center Professor of Medicine at the Hospital of the University of Pennsylvania

Dr. Falk is employed by Penn Medicine.

About Dr. Gary W. Falk

Recognized by America's Top Doctors, 2015 - 2018

Recognized by Best Doctors in America, 2002 - 2019

Recognized in Philadelphia magazine's annual Top Docs issues, 2017 - 2019

Sidney Cohen University of Pennsylvania GI Fellowship Teacher of the Year, 2012, 2016

AGA Distinguished Clinician Award, 2014

Patient Satisfaction Ratings

Patient Rating Breakdown

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

Overall Ratings

Clinical Specialties


  • Gastroenterology

Programs & Centers:

Board Certification:

  • Gastroenterology, 1985
  • Internal Medicine, 1983

Clinical Expertise:

  • Abdominal Bloating
  • Abdominal Disorders
  • Abdominal Distention
  • Abdominal Pain
  • Abnormal Liver Function
  • Abnormal Stool
  • Acute Pancreatitis
  • Alcoholic Liver Disease
  • Altered Bowel Habits
  • Anal Pain
  • Anal Spasm
  • Annular Pancreas
  • Anorexia
  • Autoimmune Enteropathy
  • Autoimmune Hepatitis
  • Barrett's Esophagus
  • Benign Neoplasm of Colon
  • Blood in Stool
  • Bowel Disorders
  • Bowel Dysmotility
  • Bowel incontinence (Fecal Incontinence)
  • Bright Red Blood in Rectum
  • C. Difficile (Clostridium Difficile Diarrhea)
  • Celiac Disease (Celiac Sprue)
  • Cholangitis
  • Cholecystitis
  • Cholelithiasis
  • Cholestasis
  • Chronic Diarrhea
  • Chronic Pancreatitis
  • Colitis
  • Collagenous Colitis
  • Colonic Inertia
  • Colonic Polyps
  • Colonoscopy
  • Constipation
  • Crigler Najjar Syndrome
  • Crohn's Disease
  • Cyclic Vomiting Syndrome
  • Difficulty Swallowing (Dysphagia)
  • Digestive Conditions
  • Diverticular Disease
  • Diverticulitis (Colonic Diverticulitis)
  • Duodenal Ulcer
  • Duodenitis
  • Dyspepsia
  • Early Satiety
  • Eosinophilic Colitis
  • Eosinophilic Enteritis
  • Eosinophilic Esophagitis (EoE)
  • Eosinophilic Gastritis
  • Epigastric Pain
  • Eructation
  • Esophageal Achalasia
  • Esophageal Disorders
  • Esophageal Motility Disorders
  • Esophageal Spasm
  • Esophageal Stricture
  • Esophageal Thickening
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Esophagus Tumors
  • Fatty Liver Diseases
  • Fecal Impaction
  • Feeding Tube Management
  • Flatulence
  • Focal Nodular Hyperplasia
  • Gallbladder Disorders
  • Gallbladder Polyp
  • Gastric Anomaly
  • Gastric Ulcer
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Amyloid
  • Gastrointestinal Bleeding
  • Gastrointestinal Cancer Screening
  • Gastrojejunal Ulcer
  • Gastroparesis
  • Gastroscopy
  • Giardiasis
  • Gluten Sensitivity
  • H. Pylori Infection
  • Hematemesis
  • Hemochromatosis
  • Hepatitis
  • Hepatitis B
  • Hepatitis C
  • Hepatomegaly
  • Hereditary Nonpolyposis Colorectal Cancer
  • Hiatal Hernia
  • Ileitis
  • Inflammatory Bowel Disease (IBD)
  • Intestinal Obstruction
  • Intestinal Pseudo-Obstruction
  • Intractable Vomiting
  • Irritable Bowel Syndrome
  • Ischemic Colitis
  • Jaundice
  • Lactose Intolerance
  • Liver Cirrhosis
  • Liver Diseases
  • Liver Mass
  • Lymphocytic Colitis
  • Malabsorption
  • Melena
  • Microscopic Colitis
  • Motility Disorders
  • Nausea
  • Non-Alcoholic Fatty Liver Disease
  • Obstipation
  • Obstructive Jaundice
  • Odynophagia
  • Pancreas Divisum
  • Pancreatic Cyst
  • Pancreatic Insufficiency
  • Pancreatic Pseudocyst
  • Pancreaticobiliary Disease
  • Pancreatitis
  • Peptic Ulcer Disease (Stomach Ulcers)
  • Peritonitis
  • Pernicious Anemia
  • Peutz-Jeghers Syndrome
  • Polyposis Syndrome
  • Portal Hypertension
  • Portal Hypertensive Gastropathy
  • Postprandial Diarrhea
  • Proctitis
  • Proctosigmoidoscopy
  • Rectal Bleeding
  • Rectal Disorders
  • Short Bowel Syndrome (Short Gut Syndrome)
  • Sigmoidoscopy
  • Small Bowel Disease
  • Steatorrhea
  • Stomach Cramps
  • Stomach Disorders
  • Swallowing Disorders
  • Toxic Liver Injury
  • Ulcerative Colitis
  • Upper GI Endoscopy
  • Vomiting
  • Whipple's Disease
  • Wilson's Disease
  • Zenker's Diverticulum
Show All Expertise

Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Amerihealth Caritas
  • Amerihealth Caritas Medicare
  • Cigna
  • Cigna HealthSpring
  • Clover Health Plan
  • CVS Health
  • Devon Health Services (Americare)
  • eLAP Services
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • HealthSmart
  • Highmark Blue Shield
  • Homestead Smart Health Plans
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana / Choicecare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Keystone First Medicare
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • Oxford Health Plan
  • PA Health and Wellness (Centene) Medicare
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Provider Partners Health Plan
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan
  • Veterans Choice Program

Education and Training

Medical School: University of Rochester School of Medicine
Residency: George Washington University Medical Center
Fellowship: University of Michigan Medical Center


American College of Gastroenterology, National American College of Gastroenterology, National American College of Physicians, National American Gastroenterological Association, National American Gastroenterological Association, National American Journal of Physiology, National American Partnership For Eosinophilic Disorders, National American Society for Gastrointestinal Endoscopy, National Cleveland Clinc Journal of Medicine, National Gastroenterology, National Gut, International International Eosinophil Society, National

Hospital Affiliation

Dr. Falk is employed by Penn Medicine.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Penn Medicine Radnor: Has privileges to perform procedures.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.


Description of Research Expertise:

Barrett's esophagus: chemoprevention, detection, diagnosis, cancer prevention, epidemiology, risk stratification, pathogenesis

Eosinophilic esophagitis: epidemiology, pediatric-adult transition, fibrosis, clinical trials, pathogenesis

Endoscopy: advanced imaging

Selected Publications:

Levy Jennifer L, Levine Marc S, Rubesin Stephen E, Falk Gary W, Metz David C, Dempsey Daniel T, Ginsberg Gregory G: Findings of Esophagography for 25 Patients After Peroral Endoscopic Myotomy for Achalasia. AJR. American journal of roentgenology 207 (6): 1185-1193,2016.

Thota Prashanthi N, Vennalaganti Prashanth, Vennelaganti Sreekar, Young Patrick, Gaddam Srinivas, Gupta Neil, Lieberman David, Sampliner Richard, Falk Gary W, Mathur Sharad, Kennedy Kevin, Cash Brooks D, Moawad Fouad, Bansal Ajay, Spaander Manon C, Bruno Marco J, Vargo John, Sharma Prateek: Low Risk of High-grade Dysplasia or Esophageal Adenocarcinoma Among Patients with Barrett's Esophagus Less Than 1 cm (Irregular Z Line) Within 5 Years of Index Endoscopy. Gastroenterology 152 (5): 987-992,2016.

Dellon Evan S, Collins Margaret H, Bonis Peter A, Leung John, Capocelli Kelley E, Dohil Ranjan, Falk Gary W, Furuta Glenn T, Menard-Katcher Calies, Gupta Sandeep K, Hirano Ikuo, Hiremath Girish S, Kagalwalla Amir F, Wershil Barry K, Liacouras Chris A, Muir Amanda B, Mukkada Vincent A, Putnam Philip E, Schoepfer Alain M, Straumann Alex, Wo John M, Yang Guang-Yu, Rothenberg Marc E, Gonsalves Nirmala: Substantial Variability in Biopsy Practice Patterns Among Gastroenterologists for Suspected Eosinophilic Gastrointestinal Disorders. Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association 14 (12): 1842-1844,2016.

Critchley-Thorne Rebecca J, Davison Jon M, Prichard Jeffrey W, Reese Lia M, Zhang Yi, Repa Kathleen A, Li Jinhong, Diehl David L, Jhala Nirag C, Ginsberg Gregory, DeMarshall Maureen, Foxwell Tyler, Jobe Blair A, Zaidi Ali H, Duits Lucas C, Bergman Jacques J G H M, Rustgi Anil K, Falk Gary W: A Tissue Systems Pathology Test Detects Abnormalities Associated with Prevalent High Grade Dysplasia and Esophageal Cancer in Barrett's Esophagus. Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 26 (2): 240-248,2016.

Leiman D A, Riff B P, Morgan S, Metz D C, Falk G W, French B, Umscheid C A, Lewis J D: Alginate therapy is effective treatment for gastroesophageal reflux disease symptoms: a systematic review and meta-analysis. Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus : 2016.

Muir Amanda B, Dods Kara, Henry Steven J, Benitez Alain J, Lee Dale, Whelan Kelly A, DeMarshall Maureen, Hammer Daniel A, Falk Gary, Wells Rebecca G, Spergel Jonathan, Nakagawa Hiroshi, Wang Mei-Lun: Eosinophilic Esophagitis-Associated Chemical and Mechanical Microenvironment Shapes Esophageal Fibroblast Behavior. Journal of pediatric gastroenterology and nutrition 63 (2): 200-9,2016.

Sun Xiangqing, Elston Robert, Falk Gary W, Grady William M, Faulx Ashley, Mittal Sumeet K, Canto Marcia I, Shaheen Nicholas J, Wang Jean S, Iyer Prasad G, Abrams Julian A, Willis Joseph E, Guda Kishore, Markowitz Sanford, Barnholtz-Sloan Jill S, Chandar Apoorva, Brock Wendy, Chak Amitabh: Linkage and related analyses of Barrett's esophagus and its associated adenocarcinomas. Molecular genetics & genomic medicine 4 (4): 407-19,2016.

Critchley-Thorne Rebecca J, Duits Lucas C, Prichard Jeffrey W, Davison Jon M, Jobe Blair A, Campbell Bruce B, Zhang Yi, Repa Kathleen A, Reese Lia M, Li Jinhong, Diehl David L, Jhala Nirag C, Ginsberg Gregory, DeMarshall Maureen, Foxwell Tyler, Zaidi Ali H, Lansing Taylor D, Rustgi Anil K, Bergman Jacques J G H M, Falk Gary W: A Tissue Systems Pathology Assay for High-Risk Barrett's Esophagus. Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 25 (6): 958-68,2016.

Whelan Kelly A, Merves Jamie F, Giroux Veronique, Tanaka Koji, Guo Andy, Chandramouleeswaran Prasanna M, Benitez Alain J, Dods Kara, Que Jianwen, Masterson Joanne C, Fernando Shahan D, Godwin Bridget C, Klein-Szanto Andres J, Chikwava Kudakwashe, Ruchelli Eduardo D, Hamilton Kathryn E, Muir Amanda B, Wang Mei-Lun, Furuta Glenn T, Falk Gary W, Spergel Jonathan M, Nakagawa Hiroshi: Autophagy mediates epithelial cytoprotection in eosinophilic oesophagitis. Gut 66 (7): 1197-1207,2016.

Kong Jianping, Sai Hong, Crissey Mary Ann S, Jhala Nirag, Falk Gary W, Ginsberg Gregory G, Abrams Julian A, Nakagawa Hiroshi, Wang Kenneth, Rustgi Anil K, Wang Timothy C, Lynch John P: Immature myeloid progenitors promote disease progression in a mouse model of Barrett's-like metaplasia. Oncotarget 6 (32): 32980-3005,2015.

Academic Contact Info

3400 Civic Center Boulevard
749 Perelman Center for Advanced Medicine
South Pavilion

Philadelphia, PA 19104
Phone: (215) 615-4951
Patient appointments: 800-789-7366 (PENN)

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