There are several subjects the claims adjuster is allowed to discuss with your doctor, but your medical care is not one of them. Unless you give the adjuster permission to speak with your doctor they may not call and ask questions concerning your care.
There are many complicated rules regarding communication with medical providers. Defendants are allowed to obtain medical records, medical bills, and address non-substantive matters, but they can not discuss important matters like treatment without authorization from you, the injured worker.
The statute is clear about the type of written communication that is allowed as well and provides specific questions that can be asked without your consent.
It can be confusing when an adjuster calls and asks if they can discuss a certain topic with your doctor. What you say in an unplanned moment may hurt your case. If you suspect improper communication has occurred you should contact an attorney to discuss the issue.