Meet our public health experts

Our mission is to promote public health and to help governments respond to emerging infectious diseases, weather-related catastrophes, and other public health threats.

Andrew Sommers, Ph.D, MSPH

Dr. Sommers is Vice President and the Executive Director of MPH. In this role, he oversees the Company’s applied public health work and related data analytics efforts on behalf of government clients. Dr. Sommers is a leading expert in the prevention and control of infectious diseases that can cause epidemics and pandemics like COVID-19.

Learn more about Dr. Sommers

Elizabeth Smith

Maximus Senior Vice President for Federal Health Strategy, Elizabeth Smith holds a Master’s degree in Health Policy and Planning from Johns Hopkins Bloomberg School of Public Health, and a Bachelor of Science degree in Biology from Syracuse University. She has over thirty years' experience working with the U.S. Federal and State Governments, commercial systems integrators, and private health care and technology firms.

Learn more about Ms. Smith

Corinna Dan, RN, MPH

Ms. Dan is a Senior Director and public health nurse. She joins Maximus from HHS Office of the Assistant Secretary for Health (OASH), where she served as a Senior Policy Advisor in the Office of Infectious Disease Policy. This Office is responsible for planning and coordinating federal policy and programs for infectious diseases across federal and non-federal partners.

Learn more about Ms. Dan

Karin Hoelzer, DVM, Ph.D

Dr. Hoelzer is a Director who joins Maximus from the Pew Charitable Trusts, where she served as a senior officer for health programs. Prior to that, Dr. Hoelzer worked at the Food and Drug Administration, where she supported research and coalition building with industry. She is an expert in zoonotic diseases and biomedical research on virus emergence and virus-host adaptation.

Learn more about Dr. Hoelzer

Nomana Khan, MPH

As a Senior Director, Nomana Khan brings to Maximus more than twenty years of diversified experience in public health, including program management, surveillance, emergency preparedness and response, epidemiology and research. She has notable international work experience and served at both federal (CDC) and state level (New Hampshire Department of Public Health).

Learn more about Ms. Khan

Amber Cox, PhD, CCRC, MPH

Dr. Cox is the Director of Public Health Epidemiology. She brings 15 years of experience working in public health, with a focus on vaccine research, global vaccine policy, and clinical vaccine research trials. Her doctoral research focused on current and historical public health policies, implementation, and epidemiological outcomes of mandatory school immunization laws in the United States.

Learn more about Dr. Cox

Jonnell Sanciangco, MSc, GISP

Mr. Sanciangco is a Geographic Information System (GIS) Analyst who joins Maximus from Michigan State University where he is a PhD candidate. He brings over 14 years of experience implementing geospatial methodologies and techniques for applications to public health projects on natural resources, environmental, conservation, and community development.

Learn more about Mr. Sanciangco