When they find one, they then contact their patients, clients or customers to see if any of them are disgruntled for any reason. If so, the jointly owned property could be taken if either of you is sued for any reason. If it's really your property, it could be lost because of a claim against the other joint owner. If you have substantial assets, you will eventually be a target for a lawsuit. And - if you wait until then to try to protect some of your assets, it will be too late.
Asset protection is like fire insurance or life insurance.
When you really need it, you can't get it. It's an organized process of using legal procedures to balance the scales of justice by making some of your assets difficult for a judgment creditor to attach and to sell. The ultimate form of asset protection is a special type of trust in a foreign country that has laws designed to make it very difficult for U.S. judgment creditors to get an attachment. If your assets are in the U.S., the judges have extra-ordinary discretion about whther they can sieze or freeze those assets if they believe they should. Now, such forfeitures are legal with respect to a wide range of crimes and offenses.