You may have many defenses, claims, or ways in which to show they cannot prove their claim. Consult with experienced debt collection defense...

It is a violation of law, probably both malpractice and other torts.

The address on the complaint is where the complaint is served, in addition to filing with the court.

Yes you can. The person causing the damage has primary liability.

Check the court records. Many are online. Look into a motion to set aside the judgment for failure to lawfully serve the lawsuit.

The State Bar website allows you to search for appellate specialists. https://apps.calbar.ca.gov/members/ls_search.aspx

Contact your state’s department of pharmacist regulation

You may have several lawsuits stemming from this. Consult with experienced malpractice attorneys.

While it may be an unusual case, it is possible. Consult with experienced attorneys.

It could be malpractice. Malpractice means that a doctor violated the standard of care. A bad outcome is not enough. Another doctor would be...