Infectious Diseases

Infectious disease has been a key area of investigation since the founding of UC-Davis Medical Center. Our founding chief, Paul Hoeprich, M.D. wrote the first comprehensive textbook on Infectious Diseases. In the late 1980s and the 1990s, UC Davis scientists, including faculty from the Division of Infectious Diseases, played important roles in understanding HIV infection, AIDS, and other retroviral infections by identifying simian and feline immunodeficiency viruses. Our faculty, along with others at UC Davis, advanced knowledge of the natural history of both the AIDS viruses, including mechanisms of cross-species transmission and the role of the immune systems in fighting these viruses. Our current division chief, Dr. Stuart Cohen, is a leading expert in the pathogenesis and epidemiology of Clostridium difficile disease, and the first-author of the current IDSA C. difficile guidelines.  Dr. George Thompson, fellowship director, is the second-author of the 2016 IDSA Aspergillosis guidelines.

Dr. Joseph Anderson
 Stem cell scientist and division member Joseph Anderson, PhD led the study to develop an improved gene therapy that shows promise as a functional cure for HIV.

Ongoing research efforts within the division span the breadth of infectious diseases.  Members of the division have developed bioengineered stem cells that generate an HIV-resistant immune system in transplant recipients and human clinical trials have recently begun.  Other areas of active clinical and laboratory research include hepatitis B and C, Clostridium difficile and H. pylori, invasive fungal infections, transplant medicine, infection control, and antibiotic stewardship.  Department faculty members pursuing research in infectious diseases are associated with many other departments in our Schools of Medicine and Veterinary Medicine;  the Center for Comparative Medicine; California National Primate Research Center; the Mouse Biology Program; Mutant Mouse Pathology Laboratory;  Comprehensive Cancer Center; Center for Biophotonics; the UC Health System Epidemiology Collaborative, and more.

Please click on any of the tabs below to learn more!

Class of 2019
Melony Chakrabarty, M.D.
Residency: University of Arizona College of Medicine
Anne Spichler Moffarah, M.D.
Residency: University of Arizona, Tucson
Class of 2018
Nathaniel DeFelice, M.D.
Residency: University of New Mexico
Bruce Weng, D.O.
Residency: Loma Linda University
Class of 2017
Jillian Ahrens, M.D. UC Davis Medical Center, Infectious Diseases (Associate Physician Diplomat)
Rie Ueno, M.D. Merck Inc., Tokyo, Japan
Class of 2016
Ethan Stewart, M.D. Kaiser, San Diego
Sarah Waldman, M.D. UC Davis Medical Center, Infectious Diseases (Associate Physician Diplomat)
Class of 2015
Priya Nand, M.D. Sequoia Hospital, Redwood City, CA
Meryl Twarog Perez, M.D. Pulmonary Medical Associates, Sacramento, CA
Class of 2014
Matthew Eldridge, M.D. Kaiser, South Sacramento
Lenora Lee, M.D. Kaiser, Sacramento Medical Center
Class of 2013
Sanaz Abderrahmane, M.D. Mercy Medical Group, Sacramento, CA
Bhavna Malik, M.D. Sutter Health, Walnut Creek, CA
Class of 2012
Sharon Wang, D.O. Arrowhead Regional Medical Center, Colton, CA
Shiv Sudhakar, M.D.  
Class of 2011
Jevon Tang, M.D. Washington Hospital, Fremont, CA
Eric Shigeno, M.D. St. Joseph Health Mission Hospital, Mission Viejo, CA
Class of 2010
Jennifer Brown, M.D. UC Davis Medical Center, Infectious Diseases (Associate Physician Diplomat)
Phillip Cole, M.D. Amplyx Pharmaceuticals, San Diego, CA
Class of 2009
Erin Hsu, M.D. Sutter Health, San Francisco, CA
Robert Eison,  M.D. Colorado Infectious Diseases, Denver, CO

*100% Board Pass rate over the last 10 years

Society for Healthcare Epidemiology of America (SHEA) - May 2015; Orlando, FL


Infectious Diseases Society of America (IDSA) – Oct 2015; San  Diego, CA


Infectious Diseases Society of America (IDSA) – Oct 2013; San Francisco, CA


Infectious Diseases Society of America (IDSA) – Oct 2011; Boston, MA

Below is an example of the schedule for years 1-2 as an Infectious Diseases Fellow.

Inpatient Consults Year 1 Year 2
University Hospital 16 weeks 10 weeks
VA Hospital 10 weeks 16 weeks
Transplant Conulsts & Antimicrobial Stewardship 6 weeks 4 weeks
University ID Clinic 26 clinics 26 clinics
VA ID Clinic 10 clinics 16 clinics
One Community Health (HIV Clinic) Once weekly Once weekly
Travel Medicine Clinic 8 clinics 8 clinics
Clinical Microbiology Lab 4 weeks If desired
Research 11 weeks 15 weeks
Education Days (Conferences, etc.) 4 days 4 days
Vacation 20 days 20 days

*A third year of fellowship is available for those desiring additional training for the development of an academic/research career.


Sacramento and Davis are located in the heart of the Central Valley between the Coast Range to the west and the towering Sierra Nevada to the east. It takes about two hours to drive either to the San Francisco Bay Area or the ski slopes above beautiful Lake Tahoe.  Napa valley is an easy 90 minute drive from the medical center.

Sacramento, California's capital, boasts large parks, a 26-mile river parkway and bike trail, historic neighborhoods and a range of cultural attractions.  Sacramento’s “farm to fork” scene has grown into a national attraction, highlighted by the yearly festival in mid-September.  A number of microbreweries have recently opened with >25 now present within the city.

Davis has a friendly, college-town feel. Its thriving downtown offers small shops, art galleries, a farmer's market, and international restaurants. The University's Mondovi Center for the Performing Arts provides a world-class venue for the community.

Central valley winters are generally mild and rainy. Summers are sunny, hot and dry. Although on some days the thermometer can exceed 100 degrees, summer days are usually in the low 90s with low humidity and a reliable sea breeze cools overnight temperatures to the 60s. Spring and fall weather is among the most pleasant in the state.

UC Davis Medical Center      Lake Tahoe