If you have not done so yet, notify your insurance carrier immediately. Assuming you have coverage for the property damage claim, let your carrier handle it. You should be able to rent a vehicle through your own insurance and they will charge back to the other carrier. This should allow you to get home. Discuss details with your carrier. If you run into problem with this approach, then yes, you need to retain an attorney. Good luck!
It sure sounds like you may have a claim. However, even if you and I both thnk you have a claim, it won't matter unless there is a credible medical expert who agrees. This is not something you can handle your self. You need to contact a local lawyer who handles medical negligence claims and you need to do it now. Do not respond to the claims adjuster, let your lawyer do that. Contact the lawyer not later than tomorrow.
Best of luck!
You do not give enough information. If yours was the only property damaged and no one was hurt, consider it a blessing. If other property was damaged and/or someone was hurt, you can expect many issues to arise and you should speak to a local lawyer now.
A this point in time, the right to the money is owned by the partnership. Either partner may bring suit in the same of the partnership while it exists. Do not dissolve the partnership until these matters are straightened out.
The discovery standard is "knew or should have known." It is difficult to believe that the patient did not know and should not have known if they never left the hospital 4 years later. I would consult with a med mal attorney in your area to ensure proper analysis.