Arthur John de Lorimier, M.D. for UC Davis Health

Arthur John de Lorimier, M.D.

Director of Pediatric GI

Clinical Professor, Department of Pediatrics

To see if Arthur John de Lorimier is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).



Pediatrics General

Pediatric Gastroenterology



Locations and Contact

Pediatric Specialty Clinics

2521 Stockton Blvd.
Sacramento, CA 95817

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7551 Madison Ave.
Citrus Heights, CA 95610

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Additional Numbers

Department Referral Phone

800-2-UCDAVIS (800-282-3284)

Physician Referrals

800-4-UCDAVIS (800-482-3284)

Philosophy of Care

As a 24 year veteran of Army Medicine I have come to recognize that healthcare is a team sport. As such, I actively seek the cooperative input of parents and primary caregivers in the care of my patients so that the therapeutic options I provide are practical and timely to the patient’s needs.

Coordination of care with other sub-specialists is essential to the care of my patients. I am willing to consider integrating non-traditional options in their care. I consider it a great honor to provide for the healthcare needs of children.

Clinical Interests

Dr. Arthur de Lorimier cares for patients with all forms of Pediatric gastrointestinal disorders to include feeding difficulties, motility disorders, functional disorders of the bowel, Inflammatory Bowel Diseases, and nutritional disorders.

As a Helms Medical Acupuncture trained physician, he provides acupuncture to appropriate patients as an adjunct to traditional treatments in the care of children with functional and motility disordersmof the gut.

Research/Academic Interests

Dr. de Lorimier is interested in the study of functional and motility disorders of the gastrointestinal tract as well as integrating non-traditional forms of healthcare in the care of his patients.


Pediatric Gastroenterology and Nutrition

Center/Program Affiliation

UC Davis Children's Hospital
UC Davis Medical Group

Undergraduate School

B.A., Santa Clara University, Santa Clara CA 1986

Medical School

M.D., Loyola University, Stritch School of Medicine, Maywood IL 1991


Pediatrics, Tripler Army Medical Center, Honolulu HI 1991-1992


Pediatrics, Tripler Army Medical Center, Hololulu HI 1992-1994


Pediatric Gastroenterology, Walter Reed Army Medical Center, Washington DC 1997-2000

Golden Apple Award for Excellence in Teaching Residents, 2020

Sacramento Top Docs Award, 2019

Secretary of Defense Superior Service Award, 2015

Order of Military Medical Merit, 2011

Ogden C. Bruton First Place Award: Sponsored by the Uniformed Services Section of the American Academy of Pediatrics for the best basic science research paper presentation: Murine Antibody Response to a vaccine for Enterotoxigenic Escherichia coli, March, 2000

James W. Bass Teaching Award, Tripler Army Medical Center Department of Pediatrics: For Excellence in Teaching, June, 2003

de Lorimier A, et al. Acupuncture Treatment for Functional Gastrointestinal Disorders in Children. World Congress of Pediatric Gastroenterology, Hepatology and Nutrition, Montreal. 2016 Oct 6.

de Lorimier A. Smart Care Coordination: Managing Referrals and Appointing in the National Capital Region. American College of Physician Executives Webinar. 2014 Mar 27. (, slides at

Byrd W, de Lorimier A, Zheng Z, Cassels FJ. Microencapsulated subunit vaccine approach to enterotoxigenic Escherichia coli and other mucosal pathogens. Advanced Drug Delivery Reviews. 2005;57(9):1362-80.

Meza-Valencia BE, de Lorimier AJ, Person DA. Hirschsprung disease in the US Associated Pacific Islands: more common than expected. Hawaii Medical Journal. 2005;64:96-101.

Katz DE, de Lorimier AJ, Wolf MK, Hall ER, Cassels FJ, van Hamont JE, Newcomer RL, Davachi MA, Taylor DN, McQueen CE. Oral immunization of adult volunteers with microencapsulated enterotoxigenic Escherichia coli (ETEC) CS6 antigen. Vaccine. 2003;21:341-46.

Samlaska CP, de Lorimier AJ, Heldman LS. Eosinophilic Panniculitis. Pediatric Dermatology. 1995;12(1):35-38.

de Lorimier AJ, Park F, Aranha GV, Reyes C. Hepatoid Adenocarcinoma of the Stomach. Cancer. 1993;71(2):293-6.

Coster TS, Wolf MK, Hall ER, Cassels FJ, Taylor DN, Liu CT, Trespalacios FC, de Lorimier A, Angleberger DR, McQueen CE. Immune Response, Ciproflaxacin Activity and Gender Differences after Human Experimental Challenge by Two Strains of Enterotoxigenic Escherichia coli. Infection and Immunity. 2007;75(1):252-59.

de Lorimier AJ, Byrd W, Hall ER, Roberts ZJ, McQueen CE, Tang D, Vaghan W, Cassels F. Murine Serum and Mucosal Antibody Response to Enterotoxigenic Escherichia coli Colonization Factor CS6. Vaccine. 2003;21(19-20):2548-55.

Hutchinson J, de Lorimier A. Five Lessons Learned With Electronic Military Medical Records. Council on Clinical Information Technology: The AAP Practice Management Newsletter. 2006;4(2):6.

Pediatric GI with Acupuncture - UC Davis Children's Hospital