Eric Chak, M.D., M.P.H.

Eric Wai Chak, M.D., M.P.H.


Gastroenterology and Hepatology


Internal Medicine


  • Assistant Professor


To see if Eric Wai Chak is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).

UC Davis Midtown Ambulatory Care Center

3160 Folsom Blvd, Suite 3500
Sacramento, CA 95816
Driving Directions

Primary Phone:

UC Davis Medical Group - Carmichael

7551 Madison Ave.
Citrus Heights, CA 95610
Driving Directions

Primary Phone:

Additional Phone Numbers

Clinic Phone: 916-734-8616
Physician Referrals: 800-4-UCDAVIS (800-482-3284)

Philosophy of Care

My goal is to create a space where patients can speak freely about their health concerns and jointly formulate a personalized plan of care for them.

Clinical Interests

Dr. Chak is a general hepatologist offering care for adults with a variety of liver diseases.  He has a special clinical interest in viral hepatitis, liver cirrhosis, and liver cancer.

Research/Academic Interests

Dr. Chak's research focuses on developing population-based screening programs for viral hepatitis especially though the enhancement of electronic health systems.


Gastroenterology and Hepatology

Center/Program Affiliation

UC Davis Medical Group
UC Davis Comprehensive Cancer Center


M.D., UC San Francisco School of Medicine, San Francisco CA 2009

M.P.H., UC Berkeley School of Public Health, Berkeley CA 2008

B.A., UC Berkeley, Berkeley CA 2004

Internship: Internal Medicine, UCLA Olive View Medical Center, Sylmar CA 2008-2009


Internal Medicine, UCLA Olive View Medical Center, Sylmar CA 2010-2012


Gastroenterology, UCLA Ronald Reagan Medical Center, Los Angeles CA 2012-2015

Board Certifications

American Board of Internal Medicine,

American Board of Internal Medicine, Gastroenterology and Hepatology,

Professional Memberships

American Association for the Study of Liver Diseases (AASLD)

Honors and Awards

Walter Trudeau Excellence in Teaching Award, Division of Gastroenterology, UC Davis, 2020

Select Recent Publications

Wang T, Liu Y, Letran D, Dang JHT, Harris AM, Li CS, Chen MS, Bowlus CL, Chak E. Healthcare Disparities Identified Between Hmong and Other Asian Origin Groups Living with Chronic Hepatitis B Infection in Sacramento County 2014-2017. J Community Health. 2020 Apr;45(2):412-418. doi:10.1007/s10900-019-00763-1. PMID:31612369.

Chak EW. Anticoagulation of Portal Vein Thrombosis in Cirrhosis: First, Do No Harm. Am J Gastroenterol. 2020 Jan;115(1):145. doi:10.14309/ajg.0000000000000351. PMID:31389813.

Taefi A, Matsukuma K, Chak E. Massive Epithelioid Hemangioendothelioma Causing Noncirrhotic Portal Hypertension. Clin Gastroenterol Hepatol. 2019 Jun;17(7):A19. doi: 10.1016/j.cgh.2018.03.037. Epub 2018 Mar 31. PMID:29609064.

Chak E, Taefi A, Li CS, Chen MS Jr, Harris AM, MacDonald S, Bowlus C. Electronic Medical Alerts Increase Screening for Chronic Hepatitis B: A Randomized, Double-Blind, Controlled Trial. Cancer Epidemiol Biomarkers Prev. 2018 Nov;27(11):1352-1357. doi:10.1158/1055-9965.EPI-18-0448. Epub 2018 Aug 8. PMID:30089680.

Harris AM, Link-Gelles R, Kim K, Chandrasekar E, Wang S, Bannister N, Pong P, Chak E, Chen MS Jr, Bowlus C, Nelson NP. Community-Based Services to Improve Testing and Linkage to Care Among Non-U.S.-Born Persons with Chronic Hepatitis B Virus Infection - Three U.S. Programs, October 2014-September 2017. MMWR Morb Mortal Wkly Rep. 2018 May 18;67(19):541-546. doi:10.15585/mmwr.mm6719a2. PMID:29771873.

Stewart SL, Kwong SL, Bowlus CL, Nguyen TT, Maxwell AE, Bastani R, Chak EW, Chen MS Jr. Racial/ethnic disparities in hepatocellular carcinoma treatment and survival in California, 1988-2012. World J Gastroenterol. 2016 Oct 14;22(38):8584-8595. doi:10.3748/wjg.v22.i38.8584. PMID:27784971.

Chak EW, Sarkar S, Bowlus C. Improving Healthcare Systems to Reduce Healthcare Disparities in Viral Hepatitis. Dig Dis Sci. 2016 Oct;61(10):2776-2783. doi:10.1007/s10620-016-4205-3. Epub 2016 May 27. PMID:27234269. 

Chak E, Schulze C, Runyon BA. Rapid Resolution of Hepatitis C Virus-Associated Cryoglobulin Rash With Use of Direct-Acting Antivirals. Clin Gastroenterol Hepatol. 2015 Nov;13(11):e166-7. doi:10.1016/j.cgh.2015.04.002. Epub 2015 Apr 8. PMID:25862985.

Chak E, Talal A, Sherman K, Schiff E, and Saab S.  Hepatitis C Virus Infection in the United States: An Estimate of True Prevalence. Liver International 2011; 31:1090-1101.