Undergraduate: University of Maryland
Medical School: College of Osteopathic Medicine and Surgery
Internship: Family Practice, Martin Army Hospital
Residency: Internal Medicine, Fitzsimons Army Medical Center
Fellowship: Gastroenterology, William Beaumont Army Hospital
Medical Associates of Pinellas, Gastroenterologist (1997-Present)
Clinical Assistant Professor of Medicine, Kirksville College of Osteopathic Medicine (1992-Present)
Assistant Chief of Gastroenterology Service, Fitzsimons Army Medical Center (1988-1990)
Clinical Instructor, Gastroenterology, University of Colorado Medical School (1989-1990)
Chief, Gastroenterology Endoscopy Service, Fitzsimons Army Medical Center (1986-1988)
Hallgren, SE, Brown GJ. The Status of Intraoperative Endoscopy. Military Medicine July
1986.
Stokes EW, Hallgren SE, Duran L. Gallstones: A Comparison of Real Time Ultrasonography and
Cholecystography with Surgical Correlation, Southern Medical Journal 1987 Aug; 80(8): 965-8.
Hallgren SE, Parker AJ, Brown GJ. Smoking and Glycogenic Acanthosis. (Abstract) Gastroenterology
May 1986.
Hopper KD, Wegery SJ, Hallgren SE. Renal Excretion of Endoscopic Retrograde Cholangiopancreatography
Injected Contrast, A Common Phenomenon. Investigative Radiology Vol 24, No 5, May 1989.
Yavorski RT, Hallgren SE, Blue PW. Effects of Verapamil and Diltiazem on Gastric Emptying
in Normal Subjects. Digestive Diseases and Sciences 1991 Sep; 36(9) 1274-6.
Hopper KD, Landis JR, Lemon JC, Freeman SR, Hallgren SE. ERCP Ductal Opacification by Ionic
and Nonionic Contrast. American Journal of Radiology.
Fisher MR, Hallgren SE, Freeman SR, McNally PR. The Effectiveness of Octreotide to Prevent
Pancreatitis caused by ERCP: A Double Blind Randomized Study. Presented ACG 1991.
