Nirmal Mann, M.D., M.S., Ph.D.

Nirmal S. Mann, M.D., M.S., Ph.D.


Gastroenterology and Hepatology

Internal Medicine


Internal Medicine


  • Clinical Professor
To see if Nirmal S. Mann is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).

UC Davis Medical Group - Elk Grove

8110 Laguna Blvd.
Elk Grove, CA 95758
Driving Directions

Primary Phone:

UC Davis Medical Group - Folsom

271 Turn Pike Dr.
Folsom, CA 95630
Driving Directions

Primary Phone:

Additional Phone Numbers

Department Contact Phone: 916-734-2737
Physician Referrals: 800-4-UCDAVIS (800-482-3284)

Clinical Interests

Nirmal Mann performs all endoscopic procedures for gastroenterology. His research interests focus on therapeutic GI endoscopy and hydrogen breath tests.


Gastroenterology and Hepatology


M.D., Panjab University Christian Medical College, Ludhiana, India, 1962

M.S., Northwestern University School of Medicine, Chicago, Illinois, 1969

B.S., Delhi University, Delhi, 1956


Northwestern University Medical Center, Chicago , Illinois, 1965-1967


Northwestern University Medical Center, Chicago, Illinois, 1967-1969

University of Alberta, Edmonton, Alberta, 1969-1971

Board Certifications

Royal College of Physicians, Canada (FRCPC), Gastroenterology, 1973

Royal College of Physicians, Canada (FRCPC), Internal Medicine, 1971

Professional Memberships

American Gastroenterlogical Association

American Society of Gastrointestinal Endoscopy

Fellow, American College of Gastroenterology

Fellow, American College of Physicians

Fellow, Royal College of Physicians of Canada (FRCPC)

Master, American College of Physicians (MACP)

Honors and Awards

Master of the American College of Gastroenterology, 2011

Master of the American College of Physicians, 2007

Teaching Award, Family Practice Residents, Texas A&M University, 1996

Teaching Award, Family Practice Residents, Texas A&M University, 1993

Teaching Excellence Award, University of Louisville, Kentucky, 1974

Select Recent Publications

Mann N.S., Cheung E.C. Sorbitol Induced Breath Hydrogen in Healthy Volunteers. Journal of Internal Medicine March 2007, 14:3-6.

Mann N.S., Leung J.W. Knowledge of some aspects of celiac sprue among professors of gastroenterology. Journal of Internal Medicine March 2006, 13:3-5.

Mann N.S., Rossaro L. Sudden infant death syndrome: The colon connection. Medical Hypotheses March 2006, 66:375-379.

Tagore K.S., Mann N.S. Large Brunneroma of Duodenal Bulb Removed Endoscopically. Practical Gastroenterology October 2006, 30:81-83.

Mann N.S., Leung J.W. Pathogenesis of esophageal rings in eosinophilic esophagitis. Medical Hypotheses,64:520-523, Jan 2005.

Mann N.S., Leung J.W. Per oral unsedated thin caliber gastroscopy is acceptable to patients. Journal of Internal Medicine September 2005, 12:163-165.

Mann N.S., Leung J.W., Lum DF. Fasting breath hydrogen correlates with severity of constipation. The Antiseptic 101:97-99, March 2004.

Mann N.S., Rachut E. Carcinoma of gastric stump causing afferent loop obstruction and acute pancreatitis. Hepato-Gastroenterology 51:184:186, Jan 2004.

Mann N.S., Leung J.W. Teaching surgical residents colonoscopy: Impact on procedure time and sedation used. Journal of Internal Medicine 11:87-89, June 2004.

Leung J.W., Lee W., Chin A., Chang S., Mann N.S. Can positioning the patient in the right lateral position during recovery prevent post-ERCP pancreatitis? An in-vitro evaluation. Journal of Internal Medicine 11:37-40, March 2004.

Mann N.S. Nadolol vs. band ligation for prevention of variceal bleeding. Gastrointestinal Endoscopy, 60:1036-1038, Dec 2004.