Left without Dr. Til Aug. 27 but need few meds. Scared be without my xanax (alprazolam) percocet & lisinopril til then. What can I do? Is emerg. Supply possible?

Medicines. You are taking controlled medicines that can only be given on a schedule Only your MD can help but may not allow early refills.
Call doctor. You have hypertension and kidney disease and are switching to new doc on Aug 27. Call doctor who last wrote your Rx and explain situation. S/he will probably want to see you before refilling meds - especially Xanax (alprazolam) and Percocet. Good luck.