Most local and state legislators have e-mail addresses. Mine check their messages daily when the legislature isn't in session. In fact, I often get a response within 24 hours. Response time is slower when the legislature is in session, but e-mail and fax are still the best ways of delivering your message. If you call, you'll probably end up speaking to an aide who you'll have to rely on to relay your message.
Most legislators have a group of physicians they consult with regularly on health-related issues.
If this interests you, call the legislator's office and offer to be a resource. It's been my experience that legislators welcome expert input on health care issues. Oppose or support proposed legislation You can use the Internet to follow legislation in most states as it goes through committee and floor votes. And you can make a critical difference by commenting on proposed legislation during this stage. For example, several years ago, a physician in my state of Virginia failed to report a case of Hepatitis A to the local health department.