Our McKinney nursing teams serve a fast paced, high volume environment with consistently strong patient census and acuity. PRN Variable Hours: Days/weekend days7a-7p, mid-11a-11p, Days- 9-5:30p, 8-4:30p, 6:30-4p, Weekend days 8a-8:30 and 9-9:30p About Us Here & we promote the well-being of all individuals, families, and communities. And is the largest not-for-profit healthcare system in Texas that empowers you to live well.