Dr. Gates graduated from Duke University School of Medicine, where he completed his Internal Medicine internship and residency. He completed a Gastroenterology fellowship at the Mayo Clinic, and was an Associate Professor at the University of Kentucky.


Current Position
- 2002 – Present | Specialist in Gastroenterology, Salem Gastroenterology Consultants, Salem, Oregon. Practice includes special interest in acute and chronic pancreatitis, gastrointestinal endocrinology, inflammatory bowel disease, and therapeutic endoscopy.
Education
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1982 | College, Utah State University, Logan, Utah B.S. in Biology, magna cum laude

- 1982 – 1986 | Medical School, Duke University School of Medicine Durham, North Carolina
- 1986 – 1989 | Internship and Residency, Duke University School of Medicine, Durham, North Carolina
- 1989 - 1993 || Research Fellow, Mayo Clinic, Rochester, Minnesota
Professional Experience
- 1993 -1999 | Assistant Professor of Internal Medicine, University of Kentucky
- 1999 - 2002 | Associate Professor, Internal Medicine, University of Kentucky
- 1997 – 2002 | Director, Pancreatic Disease Service, University of Kentucky
- 1998 – 2000 | Associate Member, Graduate Faculty, Nutritional Sciences Program, University of Kentucky
- 2000 – 2002 |Associate Professor, Graduate Center for Nutritional Sciences,University of Kentucky
- 2000 – 2002 | Gastroenterology Section Chief, Lexington VA Medical Center
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2002 - Present | Gastroenterologist, Salem Gastroenterology Consultants and Salem Hospital, Salem, OR

- 2002 – present | Clinical Assistant Professor of Medicine, Oregon Health and Science University, Portland, OR
Hospital Affiliations
- July 2002 – present | Active Medical Staff, Salem Hospital, Salem, Oregon
- 1993 – 2002 | University of Kentucky Chandler Medical Center
- Department of Internal Medicine, Division of Digestive Diseases and Nutrition, Lexington, Kentucky
- Department of Veterans Affairs Medical Center Department of Internal Medicine, Division of Gastroenterology, Lexington, Kentucky
Honors & Awards
- 1971 | Eagle Scout
- 1982 | Phi Kappa Phi
- 1986 | Alpha Omega Alpha
- 1991 | Glaxo Fellow’s Award
- 1993 | Physician Scientist Award, University of Kentucky
- 1990 – 1999 | A.M.A. Physician’s Recognition Award
Licensure & Certification
- North Carolina Medical License no. 32109 issued 1/23/88 (inactive)
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Minnesota Medical License no. 333939 issued 3/10/90 (inactive)

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Kentucky Medical License no. 29513 issued 6/18/93

- Utah Medical License no. 4826413-1205 issued 11/13/0
- Oregon Medical License no. MD23505 issued 1/18/02
- National Board of Medical Examiners, certificate no. 310525 issued 7/1/87
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American Board of Internal Medicine, certificate no. 124312 issued 9/13/89

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American Board of Internal Medicine, Gastroenterology, certificate no. 124312 Issued 11/93, renewed 2002, with expiration 11/2013

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National Board of Nutrition Support Certification, Certified Nutrition Support Physician Issued 10/20/04, with expiration 10/20/09

Professional Societies
- Phi Kappa Phi
- American College of Physicians - Elected FACP January 1996
- Alpha Omega Alpha
- American Gastroenterological Association - Elected AGAF May 2006
- American College of Gastroenterology - Elected FACG February 1998
- American Pancreatic Association
- Sigma Xi
- American Society for Gastrointestinal Endoscopy
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American College of Nutrition - Elected FACN October 2003

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American Society for Parenteral and Enteral Nutrition

- Oregon Medical Association
- Marion-Polk Medical Society
Publications - Peer Reviewed Journals
(Dr. Gates has authored or co-authored a total of 39 scientific and clinical research papers, invited reviews, and textbook chapters. A representative sampling is listed below.)
- U.G. Klueppelberg, L.K. Gates, F.S. Gorelick, L.J. Miller. Agonist-regulated Phosphorylation of the Pancreatic Cholecystokinin Receptor. J. Biol. Chem. Feb. 1991 266(4):2403-8
- L.J. Miller, E.M. Hadac, L.K. Gates, H.Y. Gaisano. Binding of a Phenethyl Ester Analogue of Cholecystokinin to the Solubilized Pancreatic Cholecystokinin Receptor: Use in Ligand-Affinity Chromatography. B B R C Mar 1992 183(2):396-404
- L.K. Gates, C.D. Ulrich, L.J. Miller. Multiple Kinases Phosphorylate the Pancreatic Cholecystokinin Receptor in an Agonist Dependent Manner. A J P June 1993 264(Gastrointest. Liver Physiol. 27):G840-847
- M.P. Lutz, D.I. Pinon, L.K. Gates, S. Shenolikar, L.J. Miller.Control of Cholecystokinin Receptor Dephosphorylation in Pancreatic Acinar Cells  J. Biol. Chem. June 1993 268(16):12136-12142
- C.D. Ulrich, D.I. Pinon, E.M. Hadac, E.L. Holicky, A. Chang-Miller, L.K. Gates, L.J. Miller. Intrinsic Photoaffinity Labeling of Native and Recombinant Rat Pancreatic Secretin Receptors.   Gastroenterology Nov. 1993 105(5):1534-1543
- Z. Zhu, M. Lutz, L.K. Gates, L.J. Miller.Mechanisms of Heterologous Agonist-Stimulated Phosphorylation of Cholecystokinin Receptor.   A J P Apr. 1994  266(Cellular Physiol):C904-10
- L.K. Gates, R.H. Wiesner, R.A.F. Krom, J. Steers, G.J. Gores, J.E. Hay, M.K. Porayko. The Etiology and Incidence of Unconjugated Hyperbilirubinemia Following Orthotopic Liver Transplantation.   Am J Gastroenterol Sep. 1994 89(9):1541-1543
- L.K. Gates, R.F. Keate, M.A. Gertz, L.J. Burgart."A Patient with Weight Loss, Hypogammaglobulinemia, and Diarrhea" (CPC)  Gastroenterology International Dec. 1994 7(4):172-178
- L.K. Gates, A.J. Cameron, D.M. Nagorney, J.R. Goellner, D.R. Farley. Primary Leiomyosarcoma of the Liver Mimicking Liver Abscess. Am J Gastroenterol Apr. 1995 90(4):649-652
- W.G. Simpson<, L. Marsano, L.K. Gates. Enteral Nutritional Support in Acute Alcoholic Pancreatitis.  J Am Col Nutrition Jun. 1995 14(6):662-665
- J.D. Tooson, L.S. Marsano, L.K. Gates.  Pediatric Rectal Dieulafoy's Lesion.  Am J Gastroenterol Dec. 1995 90(12):2232-2233
- D.C. Whitcomb, R.A. Preston, C.E. Aston, M.J. Sossenheimer, P.S. Barua, Y.Z. Zhang, A. Wong-Chong, G.J. White, P.G. Wood, L.K. Gates, C.D. Ulrich, S.P. Martin, J.C. Post, G.D. Erlich.  A Gene for Hereditary Pancreatitis Maps to Chromosome 7q35.  Gastroenterology June 1996 110(6):1975-1980
- D.A. McMenamin, L.K. Gates.  Retrospective Analysis of the Effect of Contrast Enhanced CT on the Outcome of Acute Pancreatitis.  Am J Gastroenterol July 1996 91(7):1384-1387
- D.Y. Kortas, L.K. Gates.  Vertebral Osteomyelitis Mimicking Chronic Pancreatitis. Digestive Diseases and Sciences July 1996 41(7):1527-1529
- J.D. Tooson, L.K. Gates.  Bowel Preparation before Colonoscopy. Postgraduate Medicine Aug. 1996 100(2):203-214
- L.K. Gates, R.F. Keate, J.J. Smalley, Jr., J.D. Richardson.  Macrodactylia Fibrolipomatosis Complicated by Multiple Small Intestinal Lipomas and Intussusception. Clinical Gastroenterology Sept. 1996 23(3):241-242
- D.C. Whitcomb, M.C. Gorry, R.A. Preston, W. Furey, M.J. Sossenheimer, C.D. Ulrich, S.P. Martin, L.K. Gates, S.T. Amann, P.P. Toskes, R. Liddle, K. McGrath, G. Uomo, J.C. Post, G.D. Ehrlich. Hereditary Pancreatitis is caused by a mutation in the cationic trypsinogen gene. Nature Genetics Oct. 1996 14(2):141-145
- A.B. Lowenfels, P. Maisonneuve, E.P. DiMagno, Y. Elitsur, L.K. Gates, J. Perrault, D.C. Whitcomb, and the International Hereditary Pancreatitis Study Group.  Hereditary Pancreatitis and the Risk of Pancreatic Cancer. J National Cancer Institute Mar. 1997 89(6):442-446
- L.K. Gates.  AMA Negative Immunocholangitis and Chronic Pancreatitis, a Case Report.  Pancreas Apr. 1997 14(3):311-313
- M.J. Sossenheimer, C.E. Aston, R.A. Preston, L.K. Gates, C.D. Ulrich, S.P. Martin, Y. Zhang, M.C. Gorry, G.D. Ehrlich, and D.C. Whitcomb.  Clinical Characteristics of Hereditary Pancreatitis in a Large Family Based on High-Risk Haplotype.  Am J Gastroenterol July 1997 92(7):1113-1116
- M.C. Gorry, D. Gabbaizedeh, W. Furey, L.K. Gates, R.A. Preston, C.E. Aston, Y. Zhang, C. Ulrich, G.D. Ehrlich, and D.C. Whitcomb.   Mutations in the Cationic Trypsinogen Gene are Associated with Recurrent Acute and Chronic Pancreatitis.  Gastroenterology Oct. 1997 113(4):1063-1068
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T.E. Meister, G.W. Varilek, L.S. Marsano, L.K. Gates, Y. Al-Tawil, W.J.S. de Villers.  Endoscopic Management of Rectal Dieulafoy's Lesions:  A Case Series and Review of the Literature. Gastro. Endo. Sept. 1998 48(3):302-305

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G.A. Bracher, A.P. Manocha, J.R. DeBanto, L.K. Gates, A. Slivka, D.C. Whitcomb, B.L. Bleau, C.D. Ulrich, S.P. Martin. Pancreatic Duct Stenting to Treat Pancreatic Ascites.  Gastro Endo June 1999 49(6):710-715

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J.A. Blanchard II, S. Barve, S. Joshi-Barve, R. Talwalker, L.K. Gates. Cytokine Production by CAPAN-1 and CAPAN-2 Cell Lines. Dig Dis Sci May 2000; 45(5):927-32

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F. Fortunato, L.K. Gates. Chronic Alcohol Feeding and Lipopolysaccharide Modulate Apoptotic Effectors in the Rat Pancreas In Vivo.  Pancreas June 2000; 21(2):174-180

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S.T. Amann, L.K. Gates, C.E. Aston, A.Pandya, D.C. Whitcomb. Expression and Penetrance of the Hereditary Pancreatitis Phenotype in Monozygotic Twins.  Gut April 2001; 48:543-8

- Applebaum-Shapiro SE, Finch R, Pfutzer RH, Hepp LA, Gates L, Amann S, Martin S, Ulrich CD 2nd, Whitcomb DC.  Hereditary pancreatitis in North America:  the Pittsburgh-Midwest Multi-Center Pancreatic Study Group Study. 
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D.Y. Kortas, L.S. Haas, W.G. Simpson, N.J. Nickl, L.K. Gates. Mallory-Weiss Tear: A Retrospective Analysis of Predisposing Factors and Predictors of a Complicated Course. Am J Gastroenterol Oct. 2001; 96:2863-2865

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J.A. Blanchard II, S. Barve, S. Joshi-Barve, R. Talwalker, L.K. Gates, Jr. Antioxidants Inhibit Cytokine Production and Suppress NFκB Activation in CAPAN-1 and CAPAN-2 Cell Lines. Dig Dis Sci Dec. 2001; 46:2768-2722

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L.K. Gates, D.V. Holiday.  A Syndrome of Autosomal Dominant Pancreatic Cancer and Multiple Cysts of the Liver and Kidneys.  Gastroenterology Mar. 2002; 122:796-799

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L.S. Haas, L.K. Gates. The Ascites to Serum Amylase Ratio: A Predictor of Mortality in Acute Pancreatitis with Ascites.  Pancreatology May 2002; 2:100-103

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J.R. DeBanto, P.S. Goday, M.R.A. Pedroso, R. Iftikhar, A. Fazel, S. Nayyar, D.L. Conwell, M.T. DeMeo, F.R. Burton, D.C. Whitcomb, C.D. Ulrich II, L.K. Gates, Jr.  Acute Pancreatitis in Children.  Am J Gastroenterol Jul. 2002; 97:1726-1731

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F. Fortunato, X. Deng, L.K. Gates, C.J. McClain, D. Bimmler, R. Graf, D.C. Whitcomb.  Pancreatic Response to Endotoxin after Chronic Alcohol Exposure: Switch from Apoptosis to Necrosis?  Am J Physiol Gastrointest Liver Physiol.  June 2005;

Publications - Invited Reviews
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L.K. Gates  Prophylaxis for ERCP Induced Pancreatitis: Are We There Yet?   Advances in Gastroenterology, Hepatology, and Clinical Nutrition Dec. 1998; 3:340-342

- L.K. Gates Severity Scoring for Acute Pancreatitis: Where do We Stand in 1999?  Current Gastroenterology Reports Apr 1999; 1:134-138
- L.K. Gates, C.D. Ulrich, D.C. Whitcomb.  Hereditary Pancreatitis: Gene Defects and Their Implications.  Surgical Clinics of North America August 1999; 79(4):711-722
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L.K. Gates, Hereditary Pancreatitis.  Current Treatment Options in Gastroenterology August 1999; 2(4):

- L.K. Gates, Hereditary Pancreatitis: Preventive Strategies and Therapeutic Options.  Medical Clinics of North America May 2000; 84(3):589-595
Publications - Book Chapters
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N.J. Nickl, L.K. Gates. Miscelaneous Disorders of the Pancreas.  in Gastrointestinal Endoscopy: An Endoscopic Approach to Gastrointestinal Disease. A.J. Marino, S.B. Benjamin eds.  Blackwell Science, Cambridge, MA

Dr. Gates is married to Jennifer Jensen Gates, and has two daughters, Gwyneth and Vivian.