Lawrence S. Mayer, MD, PhD
California - Serving: All States

Epidemiology and Biostatistics, Testifying & Consulting Expert Witness
Lawrence S. Mayer, MD, MS, PhD is an independent scholar and a visiting fellow in Human Flourishing at Harvard University. He does consulting in epidemiology and statistics. He recently retired from being full-time professor at a variety of institutions including Princeton, Johns Hopkins, University of Pennsylvania,...
David M. Mathis, MD, CCHP-P, FAAFP
California - Serving: All States

Correctional Medicine Expert Witness / Prison MD Expert
Physician & Surgeon at the 2500 inmate California Medical Facility and primary Hospice Physician for the California Department of Corrections and Rehabilitation until 2020. Former Medical Director of a 3500 inmate facility in Maryland. 20+ years' correctional experience (in various settings) that includes emergency...
Amy Zheng, M.D., M.Phil, CHSE
San Diego, CaliforniaEmergency Medicine & Urgent Care Expert Witness

Since 2003, Dr. Zheng has worked in a variety of clinical settings, including academic teaching centers, VA healthcare system, community hospitals, and rural critical access hospitals. She is a frontline clinician in the Coronavirus Pandemic, working in five urgent care centers and two emergency...