By TANYA SCHERR & DAN SCHERR, An Article Out Loud from the Domestic Preparedness, October 25, 2023.
The Healthcare and Public Health Sector is one of 16 sectors identified as critical infrastructure under the Cybersecurity & Infrastructure Security Agency. According to the U.S. Centers for Medicare and Medicaid Services, National Health Expenditures (NHE) accounted for $4.3 trillion, or 18.3% of the U.S. gross domestic product. The HPH Sector employed 14.7 million in 2022, accounting for 9.3% of employment in the United States. Domestic Preparedness invited subject matter experts to answer questions about this sector, including how the sector and its interdependencies can affect any community.
Narrated by Madison Leeves.

Tanya M. Scherr
Tanya Scherr holds a Ph.D. in public policy administration with a healthcare and emergency preparedness focus. She is an associate professor in healthcare administration for the University of Arizona and has three decades of healthcare experience. Along with being a certified fraud examiner since 2011, she is also a former firefighter–emergency medical technician (EMT), previously licensed in several states, and held national certification. She has held several executive and board of director positions for community nonprofits that focus on women’s equality, domestic violence, and sexual assault.
- Tanya M. Scherr#molongui-disabled-link
- Tanya M. Scherr#molongui-disabled-link
- Tanya M. Scherr#molongui-disabled-link
- Tanya M. Scherr#molongui-disabled-link

Dan Scherr
Dan Scherr holds a Ph.D. in Public Policy Administration with a terrorism, mediation, and peace focus. He is an assistant professor in Criminal Justice and Homeland Security at the University of Tennessee Southern and program coordinator for the Cybersecurity Program. He is also a co-director of the Honors College. He is a Certified Fraud Examiner and Army veteran who served stateside during the September 11th attacks and has over two decades of experience in homeland security and operations.
- Dan Scherr#molongui-disabled-link
- Dan Scherr#molongui-disabled-link
- Dan Scherr#molongui-disabled-link
- Dan Scherr#molongui-disabled-link