What is the dividend payout ratio for NHI? What is nhi healthcare? What does nhi stand for? What company is investing heavily in AI healthcare? What are the disadvantages of national health insurance? What are the criticisms of NHI? What analysts cover NHI stock? Is nhi stock a buy hold or sell? Is nhi a good stock to buy? Is National Health Investors a REIT? Does the nhi bill affect medical aid?