What does nha stand for in healthcare? National Healthcareer Association. The National Healthcareer Association (NHA) is a national professional certification agency for healthcare workers in the United States. Granting credentials in more than 8 allied health specialties, it is an organizational member of the National Organization for Competency Assurance (NOCA).Where can i find more information about the nha? For more information regarding the National Healthcareer Association (NHA) please visit www.nhanow.com. For additional information please contact the campus directly at 724-515-2440.How do i contact the nha customer service team? If you need assistance with the email address associated to your account or your password, please contact the NHA Customer Service Team at 800.499.9092. Please do not create multiple accounts. Already have an account? Click here to login. Forgot your password? Reset it here.