Sally Pipes media bias rating is Right.

President and CEO of the Pacific Research Institute (PRI), a California-based free-market think tank founded in 1979 to promote "the principles of individual freedom and personal responsibility" through policies that emphasize a free economy, private initiative, and limited government.

PRI head Sally C. Pipes, a Canadian-born naturalized United States citizen frequently speaks and writes against single-payer healthcare. Her bio lists as healthcare topics she had addressed "the false promise of a single-payer system as exists in Canada, pharmaceutical pricing, solving the problem of the uninsured, and strategies for consumer-driven health care".

Sources:
Pacific Research Institute: http://www.pacificresearch.org/
Wikipedia: http://en.wikipedia.org/wiki/Pacific_Research_Institute