Hey Joe... I don't know a specific medical malpractice attorney here in western WA, but this website helped me choose a very good attorney (outside of med. malpractice): www.lawyers.com. I emailed 10 and 8 got right back to me. I interviewed them first via phone; checked with the state bar association and chose one; worked out excellent.
The calculations and rules specific to alimony vary from state to state. This should be a question you can ask your attorney if you already have one. If not, I would suggest that you hire an attorney to at least help you strategize and learn what you should do.
Generally speaking, she can ask for alimony at any point in time. In some states, it is expected. That being said, each state is set up a little differently. Some states require a 10 year married period, others have a minimum number of years that a couple must have been married before the wife can get alimony. Again, it varies from state to state.
Generally speaking, they take your income, assets, debts and ability to earn income together and balance it against her income, assets, debts and ability to earn income. If you both are about equal then you may not be required to pay. If she makes more then in some states that means she might have to pay, but this is not the norm.
You might want to spend some time looking through DadsDivorce.com as they have numerous articles, videos and Ask a Lawyer topics in relation to alimony and divorce. They also have a state by state summary page of the laws that you might want to find your state and see what is listed there about alimony. I provided the link for you below in the sources - it is the second link. There is also a forum section where you can discuss this and any other divorce related topics to the guys there who have experienced divorces themselves. They might be able to offer you some great insights as well.