There are pretty firm limits on medical malpractice recovery in most states. It varies from state to state, but here's an example of two states that represent many people on this site:
Colorado - Total Damages capped at $1MM with Non Economic Damages (i.e. pain and suffering) capped at $300k - C.R.S. 13-64-302
Idaho - Putative and Non Economic Damages capped at 250k. - Idaho Code 6.1603-4.
This is not to say that lawsuits and med mal insurance don't affect the cost of health care, they do. But be careful when you throw around numbers like $150MM because that just isn't accurate. Our courts/lawmakers decided a long time ago that it is better for everyone to share the added costs associated with the risks of medical surgery. This is a policy decision, and you are free to try to change that. The other problem, at least as far as the Health Care Bill is concerned, is that tort law is defined by the individual states, and Congress doesn't have the power to cap medical malpractice recovery across the board.
In my opinion, the reason healthcare is expensive is because so many people get coverage and then don't pay for it. The health care bill, in its clumsy way, addresses this free rider problem. The bill also purports to help protect people with preexisting conditions - which is a topic very close to me. (It also addresses the adverse selection problem which is another reason health insurance costs are so high.) For those reasons, if it is successful, I think the bill is a net positive.
I do believe there are better alternatives, but you would never get any of those options through this Congress. And, while extremely flawed, this Congress is what we have to work with.