Can a medical doctor who posts false information in reference to you in response to a review you posted online be liable

A few months back I posted a review about a doctor who treated me an ethically in an office and was unable to start an IV line on me I did not post anything erroneous or untrue. The doctor posted a response in which he does not only imply but he firmly States that I am an intravenous drug user and that's why he could not start an IV this is not true in any way shape or form he is just angry that I filed a complaint. He says that it is the intravenous drugs that have made my veins go bad that I am shooting up heroin. I have a medical condition that requires me to have intravenous medications that have damaged my veins all given to me through Sutter Hospital of Sacramento. The damage to the veins was a known side effect that I willingly understood. I have not now nor ever used heroin or any other intravenous drug. This being publicized on Google can not only affect potential employers but my ability to continue to get medical attention