Larissa May, M.D., M.S.P.H., M.S.H.S.

Larissa Severine May, M.D., M.S.P.H., M.S.H.S.


Emergency Medicine


  • Associate Professor and Director of Emergency Department Antibiotic Stewardship
To see if Larissa Severine May is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).

UC Davis Medical Center

2315 Stockton Blvd.
Sacramento, CA 95817
Driving Directions

Primary Phone:

Additional Phone Numbers

Physician Referrals: 800-4-UCDAVIS (800-482-3284)

Clinical Interests

General emergency medicine.

Research/Academic Interests

Dr. May's research interests include: acute infectious disease epidemiology and management, antibiotic stewardship, rapid diagnostic testing for acute emergencies, and public health microbiology.


Emergency Medicine


M.D., George Washington University School of Medicine and Health Sciences, Washington DC 2002

M.S.P.H., Infectious Diseases, George Washington University, Washington DC 2008

M.S.H.S., Clinical and Translational Research, George Washington University, Washington DC 2013

B.S., George Washington University, Washington DC 1997


Emergency Medicine, George Washington University Medical Center, Washington DC 2003-2005

Chief Resident- Emergency Medicine, George Washington University Medical Center, Washington DC 2005-2006

Board Certifications

American Board of Emergency Medicine, 2007

Professional Memberships

American College of Emergency Physicians

Infectious Diseases Society of America

Society for Healthcare Epidemiology of America

Honors and Awards

The George Washington University Alumni Association Prize, 2013

Fellow, American College of Emergency Physicians, 2009

Alpha Omega Alpha, 2002

Select Recent Publications

Qadri F, Mazer Amirshahi M, Fox ER, Hawley KL, Pines JM, Zocchi MS, May L.  Antibacterial Drug Shortages from 2001 to 2013: Implications for Clinical Practice. Clinical Infectious Diseases 2015; 60(12):1737-42.

May L, Gudger G, Armstrong P, Brooks G, Hinds P, Bhat R, Moran G, Schwartz L, Cosgrove S, Klein E, Rothman RE, Rand C. Multisite Exploration of Clinical Decision-Making for Antibiotic Use by Emergency Medicine Providers Using Quantitative and Qualitative Methods. Infection Control and Hospital Epidemiology 2014; 35(9):1114-25.

May L, Klein E, Rothman RE, Laxmarinayan R.  Trends in Antibiotic Resistance in Coagulase Negative Staphylococci, United States, 1999–2012. J of Antimicrobial Agents and Chemotherapy 2014; 58(3):1404-9.

May L. Mullins P.   Pines J.  Demographic and Treatment Patterns for Infections in Ambulatory Settings in the United States, 2006-2010.  Academic Emergency Medicine 2014; 21(1):17-24.

May L. Cosgrove SE.  L’Archeveque M.  Talan DA.  Payne P.  Jordan J.  Rothman RE.  A Call to Action for Antimicrobial Stewardship in the Emergency Department: Approaches and Strategies.  Annals of Emergency Medicine 2013; 62(1):69-77.e2.