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Office
855 Proton Rd
San Antonio, TX 78258Phone+1 210-614-1234Fax+1 210-614-0952
Education & Training
San Antonio Uniformed Services Health Education ConsortiumFellowship, Gastroenterology, 1989 - 1991
William Beaumont Army Medical CenterResidency, Internal Medicine, 1984 - 1987
George Washington University School of Medicine and Health SciencesClass of 1984
Certifications & Licensure
TX State Medical License 1993 - 2025
NM State Medical License 1986 - 2005- American Board of Internal Medicine Internal Medicine
- American Board of Internal Medicine Gastroenterology
Awards, Honors, & Recognition
- CMS Meaningful Use Stage 1 Certification eClinicalWorks EHR, eClinicalWorks LLC, 2011, 2013
Publications & Presentations
PubMed
- 42 citationsRapid Diagnosis of Infected Ascitic Fluid Using Leukocyte Esterase Dipstick TestingRaj C. Butani, Richard T. Shaffer, Ronald D. Szyjkowski, Barbara E. Weeks, Linda G. Speights
The American Journal of Gastroenterology. 2004-03-01 - 65 citationsThe prevalence of celiac disease autoantibodies in patients with systemic lupus erythematosus.Michael J Rensch, Ronald Szyjkowski, Richard T. Shaffer, Sean Fink, Craig Kopecky
The American Journal of Gastroenterology. 2001-04-01 - 14 citationsVenous complications of midazolam versus diazepamJohn G. Carrougher, Shailesh C. Kadakia, Richard T. Shaffer, Christopher N. Barrilleaux
Gastrointestinal Endoscopy. 1993-01-01
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