Contact Dr. Kirk in Las Vegas and Denver. Las Vegas Dr. Gregory Kirk Town Square Las Vegas 6671 S Las Vegas Blvd, Bldg D, Suite 210 Las Vegas, NV 89119 gregkirk@avipsy.org Las Vegas Appointments Denver Dr. Gregory Kirk The Bushong Mansion 2036 East 17th Avenue Denver, CO 80206 gregkirk@avipsy.org Denver Appointments