Can a divorcing husband make treatment decisions on wife?

In most cases, a divorcing husband does not have the legal authority to make medical treatment decisions for his wife unless he is her designated healthcare proxy or has durable power of attorney over her medical decisions. If they are still legally married at the time of her treatment, he may retain some rights to participate in decisions, depending on state laws. However, once the divorce is finalized, he typically loses any authority to make those decisions. Ultimately, the wife's wishes and any existing legal documents take precedence.