Patient Portal

Natalie D. Cosgrove, MD

Assistant Professor, Medicine
Division of Gastroenterology

Specialty Areas

Interventional Endoscopy

Board Certifications

Internal Medicine

Hospital Affiliations

Barnes-Jewish Hospital
Barnes-Jewish West County Hospital

Areas of Clinical Interest

ERCP, EUS, enteral stenting, gastrointestinal stricture dilation, endoscopic suturing, pancreatitis, pancreatic pseudocyst, pancreatic necrosis, bile duct stones, biliary strictures, pancreatic cysts, pancreatic cancer diagnosis, polypectomy.

  • Location(s)
  • Education
  • Publication & Research



Barnes-Jewish West County Hospital
Medical Building Three

1020 N. Mason Road
St. Louis, MO 63141

Suite: 100
Office Phone: 314-747-2066



Fellowship, Advanced Endoscopy: Washington University School of Medicine, St. Louis, MO 2018
Fellowship, Gastroenterology: Thomas Jefferson University, Philadelphia, PA 2017
Residency, Internal Medicine: University of Virginia, Charlottesville, VA 2014
Medical Degree: Temple University School of Medicine, Philadelphia, PA 2011
BS, Cell Biology/Biochemistry: Bucknell University, Lewisburg, PA 2007

Publication & Research

Publication & Research

  1. Cosgrove ND, Al-Osaimi AM, Sanoff HK, Morris MM, Read PW, Cox DG, Mann JA, Argo CK, Berg CL, Pelletier SJ, Maluf DG, Wang AY. Photodynamic Therapy Provides Local Control of Cholangiocarcinoma in Patients Awaiting Liver Transplantation. American Journal of Transplantation2014 Feb; 14(2): 466-71. PMID: 24373228
  2. Strand DS, Cosgrove ND, Patrie JT, Cox DG, Sauer BG, Shami VM, Mann JA, Adams RB, Bauer TW, Wang AY. ERCP-Directed Radiofrequency Ablation and Photodynamic Therapy are Associated with Comparable Survival in the Treatment of Unresectable Cholangiocarcinoma. Gastrointestinal Endoscopy2014 Nov; 80(5): 794-804. PMID: 24836747
  3. Taunk P, Cosgrove N, Loren D, Kowalski T, Siddiqui A. Endoscopic ultrasound-guided gastroenterostomy using a lumen-apposing self-expanding metal stent for decompression of afferent loop obstruction. Endoscopy 2015;47 Suppl 1: E395-6. PMID: 26273778Cosgrove N, Loren D, Siddiqui A, Kowalski T. A Rare Case of Acinar Cell Cystadenoma in a 14 year-old Adolescent. Case Reports in Pancreatic Cancer. 2016 Jan; 2(1).
  4. Cosgrove ND, Siddiqui A, Kistler CA, Zabolotsky A, Ghumman SS, Hayat U, Laique SN, Hasan MK. Endoscopic Mucosal Resection of Large Non-ampullary Duodenal Polyps: Technical Aspects and Long term Therapeutic Outcomes. Minerva Gastroenterologica e Dietologica 2016 June;62(2): 131. PMID: 26837639
  5. Yan L, Siddiqui AA, Laique S, Saumoy M, Kahaleh M, Yoo J, Kalra A, Matew A, Sterling J, Rao R, Lieberman M, Cosgrove N,Sharaiha RZ. A Large Multicenter Study of Recurrence After Surgical Resection of Branch-duct Intraductal Papillary Mucinous Neoplasm of the Pancreas. Minerva Gastroenterologica e Dietologica2016 Nov; 63(1):50-54. PMID: 27824244Siddiqui A,Cosgrove N,Yan LH, Brandt D, Janowski R, Kalra A, Zhan T, Baron TH, Repici A, Taylor LJ, and Adler DG. Long-term outcomes of palliative Colonic stenting versus emergency surgery for acute proximal malignant colonic obstruction: A Multicenter Trial. Endoscopy International Open 2017Apr; 5(4):232-238. PMID: 28367495
  6. Cosgrove N, Siddiqui AA, Adler DG, Shahid H, Sarkar A, Sharma A, Kowalski TE, Loren D, Warndorf M, Chennat J, Munigala S, Papachristou GI. A Comparison of Bilateral Side-by-side Metal Stents Deployed Above and Across the Sphincter of Oddi in the Management of Malignant Hilar Biliary Obstruction. J Clin Gastroenterol 2017 Jul; 51(6):528-533. PMID: 27348319
  7. El Chafic AH, Loren D, Siddiqui A, Mounzer R, Cosgrove N, Kowalski T. Comparison of FNA and fine-needle biopsy for EUS-guided sampling of suspected GI stromal tumors. Gastrointest Endosc2017 Sep; 86(3):510-515.PMID: 28131864


  1. Cosgrove ND,Wang AY. Endoscopic Approaches to Biliary Intervention in Patients with Surgically Altered Gastroduodenal Anatomy. World J Surg Proced2014;4(2): 23-32.
  2. Cosgrove ND, Yan L, Siddiqui A. Preoperative Endoscopic Ultrasound-Guided Fine Needle Aspiration for the Diagnosis of Pancreatic Cancer: Is this Safe? Endoscopic Ultrasound 2015Apr-Jun;4(2):81-4.PMID: 26020040
  3. Kaplan J, Khalid A, Cosgrove ND, Soomro A, Mohsin SM, Siddiqui A. Endoscopic Ultrasound-Fine Needle Injection for Oncological Therapy. World J Gastrointest Oncol. 2015 Dec;15(7): 466-72. PMID: 26691224
  4. Cosgrove ND, Taunk P, Shahid H, Siddiqui A. Endoscopic Drainage of Pancreatic Fluid Collections. Advanced Pancreaticobiliary Endoscopy, edited by Douglas G. Adler, Springer, 2016, pp 193 – 204.
  5. Cosgrove N, Mullady D. Endoscopic Evaluation of the Esophageal Cancer Patient After Chemoradiotherapy For Persistent/recurrent Cancer. Dis Esophagus. 2018 June (Epub ahead of print). PMID: 29931309

Areas of Research Interest

Pancreatic pseudocyst, pancreatic necrosis, pancreatic and biliary disease.