He served as an assistant director in the United States Office of Personnel Management during the Reagan administration with responsibilities in both federal personnel policy and Congressional relations, and Deputy Assistant Secretary at the U.S. Department of Health and Human Services.
In 1993, The Washington Post ran a feature story detailing Moffit's criticisms of the Clinton proposal.
Moffit's team helped develop Massachusetts' health insurance reform initiative in 2005.
A longtime advocate of a consumer-driven approach, Moffit recommends that the government adopt a new program for the baby boomers entering Medicare in 2011 similar to the consumer-driven Federal Employees Health Benefit Plan (FEHBP), which allows members of Congress and federal workers to select coverage from a broad range of competing private health plans.
Moffit has also been an advocate of the free market principles of consumer choice and competition since the early 1990s, when he chastised Congress for keeping such a system of choice and competition "exclusively for itself and federal workers while considering ways to impose vastly inferior systems on almost all [other] Americans."