National Veterans Foundation
This website gives a list of national resources for veterans in various categories (hotlines, VA benefits, social supports, health, etc.)

National Center for Veterans Analysis and Statistics
NCVAS serves as the authoritative clearinghouse for VA to collect, validate, analyze, and disseminate key statistics on Veteran population and VA programs to support planning, analysis, and decision-making activities.

Partnered Evidence-Based Policy Resource Center
The Partnered Evidence-Based Policy Resource Center (PEPReC) provides timely, rigorous data analysis to support the development of high-priority policy, planning, and management initiatives. It also coordinates and supports the design and implementation of randomized program evaluations with strong potential to improve the quality and efficiency of VA healthcare. 

Veterans Healthcare Policy Institute
The Veterans Healthcare Policy Institute is a non-partisan think tank that empowers veterans and provides clear, reliable information that leads to better healthcare outcomes for veterans and was founded by veterans, medical professionals, and patient advocates.