A medical malpractice claim is not necessarily against your doctor or only against the doctor. A nurse can commit malpractice. The hospital itself or manufacturers of medical products could be liable. Or all of the above. It's not about a scattergun approach. It's about identifying the medical professionals or entities who contributed to your family's tragedy and holding them accountable.
According to a recent survey of doctors by Medscape, it's rare (just 12 percent of the time) that the treating physician or surgeon is the only party named in a lawsuit. More often, there are multiple parties involved, each with their own roles (and defenses). Who else might you end up suing for malpractice, besides the primary care doctor or specialist?