to be extremely informative:
http://www.ntu.org/main/press.php?PressID=343"Health and Life Insurance - Super Subsidies"
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Members of Congress may obtain health insurance coverage for themselves and their families through the Federal Employees Health Benefits Program (FEHBP), which covers approximately 9 million government workers, retirees, and dependents. Widely touted as a model program even by fiscal conservatives, FEHBP allows employees to select the level and type of health insurance they desire (such as fee-for-service or managed care) from a variety of competing private plans, cooperatives, and union-negotiated arrangements. Providers are encouraged to "bid" with the government by offering specially-designed benefit packages at varied prices.15
According to Office of Personnel Management reports, the average biweekly premium for family coverage paid by the enrollee will amount to $80.16; for self-only coverage, the biweekly amount would be $36.52. However, the government provides workers with a large subsidy for the coverage, under a formula ironically dubbed the "Fair Share." Enacted into law in 1997, taxpayers generally contribute 72 percent of the "program-wide weighted average of premiums in effect each year," or 75 percent of the "total premium for the particular plan an enrollee selects."16 ...If each Member of Congress selected the average self-only coverage option under FEHBP for the year 2001, taxpayers would contribute a subsidy of roughly $1.2 million.
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The Attending Physician's Office is a $1.8 million-per-year operation that encompasses three separate facilities employing nearly twenty doctors, nurses, and technicians in the U.S. Capitol (some of whom are part-time workers). ...an annual fee has been instituted, which this year is reportedly set at $332 for House Members and $520 for Senators. At this rate, the annual taxpayer subsidy for the Attending Physician is still at least $1.6 million. However, Americans may take comfort in the fact that their subsidy has personal value -- Capitol visitors who fall victim to medical emergencies may receive treatment as well.
One medical benefit for lawmakers that even other Congressional employees can't obtain is the combination of outpatient care at the Walter Reed Army Hospital and Bethesda Naval Hospital -- along with inpatient care at the minimum flat daily rate even if intensive care treatment is required.19
In its entirety, this National Tax Unions Policy Paper is very informative. It's entitled:
'Congressional Perks: How the Trappings of Office Trap Taxpayers'