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University of Missouri, Columbia

B.A., 1997

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University of Missouri – Columbia School of Medicine

M.D., 2003

Dean’s Honor Roll, University of Missouri of Columbia. 1993 – 1997
Service Quality Hero, University of Missouri Hospital and Clinics. April 2002. An award given to hospital employees displaying a high level of commitment for patient care.
David Wissler Presentation and Research Award. 2007. This award is given to gastroenterology fellows who display a dedicated interest in the pursuit of academic advancement in the field of gastroenterology and hepatology.

University of Wisconsin Hospital and Clinics, Madison, Wisconsin
Internal Medicine Residency, 2003 – 2006
University of Wisconsin – Veteran Affairs Medical Center
Primary Care – Chief Medical Resident. 2006 – 2007

University of Maryland Medical Center, Department of Medicine
Gastroenterology Fellowship , 2008 – 2011

Diagnosis, evaluation, and management of patients with esophageal cancer. Includes used of advanced staging techniques including endoscopic ultrasound and endoscopic mucosal resection and palliative modalities including esophageal prosthesis and thermal ablation.
Diagnosis, evaluation, and management of patients with Barrett’s esophagus with and without dysplasia. Use of endoscopic cryotherapy ablation and radiofrequency ablation for Barrrett’s esophagus with dysplasia and Barrett’s associated cancer.
Use of endoscopic ultrasound for the diagnosis and staging of gastrointestinal diseases.
Endoscopic management of biliary disease including bile duct stones, biliary/ampullary strictures and malignancies.

Biological Sciences (University of Missouri)
Teaching Assistant for Freshman Biology Course. 1997 – 1999
Basic Sciences (University of Maryland Medical School)
Sophomore student physical diagnosis preceptor. 2009 – 2001

Work History

January 2014 – Present

Ferrell Duncan Clinic of Springfield, Missouri
Gastroenterology and Hepatology
2012 – August 2014

University of Missouri School of Medicine, Division of Gastroenterology and Hepatology
2011 – 2012

Internal Medicine Inpatient Hospitalist
John Fitzgibbon Community Hospital of Marshall, Missouri
2007 – 2008

Publications

	Michael D. Williams
1.	Halsey KD, Reichelderfer M, Callicott R, Schwartz DC. Presentation of de novo collagenous colitis in a post-liver transplant patient with a history of alpha-antitrypsin deficiency. Dig Dis Sci 2007; 52:217-9.
2.	Halsey KD, Wal A, Meyer KC, Torrealba, JR, & Gauminitz, EA. Non-acidic Supra-Esophagel Reflux Associated with Chronic Allograft Dysfunction After Lung Transplant. J. Heart Lung Transplant 2008; 27 (5): 564-7.
3.	Peng HQ, Halsey KD, Sun CC, Manucha V, Nugesnt S, Rodgers WH, Suntharalingam M, Greenwald BD. Clinical utility of post-chemoradiation endoscopic brush cytology and biopsy in predicting residual esophageal adenocarcinoma. Cancer Cytopathol 2009; 119(6):463-72.
4.	Halsey KD, Chang JW, Waldt A, Greenwald BD. Recurrent disease following endoscopic ablation of Barrett’s high-grade dysplasia with spray cryotherapy. Endoscopy 2001 (accepted for publication 5/20/2001).