Washington's effort to overhaul the nation's health care system has generated an intense debate among lawmakers, policy makers and health care providers. If you want to express your opinion too, here is a list of key players involved and how to contact them.

• The White House: (202) 456-1111 or send an e-mail at www.whitehouse.gov/contact/
• House Speaker Nancy Pelosi, D-Calif.: (202) 225-4965 or e-mail her at AmericanVoices@mail.house.gov
• House Minority Leader John Boehner, R-Ohio: (202) 225-6205 or e-mail him at AsktheLeader@mail.house.gov
• Senate Majority Leader Harry Reid, D-Nev.: (202) 224-3542 or send an e-mail at www.reid.senate.gov/contact/
• Senate Minority Leader Mitch McConnell, R-Ky.: (202) 224-2541 or send an e-mail at www.mcconnell.senate.gov/contact_form.cfm
• Rep. Henry Waxman, D-Calif., chairman of the House Energy and Commerce Committee, which canceled its vote this week on health care legislation because there was not enough support : (202) 225-3976 or send an e-mail at www.waxman.house.gov/contact/
• Rep. Joe Barton, R-Texas, ranking member on the House Energy and Commerce Committee: (202) 225-2002 or send an e-mail at www.joebarton.house.gov/contactjoe.aspx?Type=Contact
• Sen. Christopher Dodd, D-Conn., member of the Senate Health, Education, Labor and Pensions Committee, which passed its health care bill last week: (202) 224-2823 or send an e-mail at www.dodd.senate.gov/index.php?q=node/3128
• Sen. Michael Enzi, ranking member on the Senate Health, Education, Labor and Pensions Committee: (202) 224-3424 or send an e-mail at www.enzi.senate.gov/public/index.cfm?FuseAction=ContactInformation.EmailSenatorEnzi
• Sen. Max Baucus, D-Mont., chairman of the Senate Finance Committee, which is still working on its version of a health care bill: (202) 224-2651 or send an e-mail at www.baucus.senate.gov/contact/emailForm.cfm?subj=issue
• Sen. Charles Grassley, R-Iowa, ranking member on the Senate Finance Committee: (202) 224-3744 or send an e-mail at www.grassley.senate.gov/contact.cfm
• Rep. Charles Rangel, D-N.Y. chairman of the House Ways and Means Committee, which passed its health care bill last week: (202) 225-4365 or send an e-mail at www.forms.house.gov/rangel/forms/contact.shtml
• Rep. Dave Camp, R-Mich., ranking member on the House Ways and Means Committee: (202) 225-3561 or send an e-mail at www.camp.house.gov/contact/
• Rep. George Miller, D-Calif., chairman of the House Education and Labor Committee, which passed its health care bill last week: (202) 225-2095 or send an e-mail at www.georgemiller.house.gov/contactus/2007/08/post_1.html
• Rep. Tom Price, R-Ga., ranking member on the Health, Employment, Labor and Pensions Subcommittee: (202) 225-4501 or send an e-mail at www.tom.house.gov/html/contact_form_email.cfm