Want a Facelift but due to blood clot history they say I'm high risk. Would seeing a hematologist help a decision?

Facelift with history of blood clots? This can be done with clearance from a hematologist. I have done this on several patients without a problem. 

The risk of blood clots forming during a facelift is largely due to general anesthesia and prolonged surgery. I would definitely ask for medical clearance from your hematologist. The good news is that facelift surgery can be done with significantly less risk of blood clots by using local anesthesia. This is an advancement in cosmetic surgery. Seek a board certified plastic surgeon who is experienced doing facelifts under local anesthesia. I wish you all the best.