How Does Social Class Affect Healthcare

Social class is the grouping of people together and their status is based on their social and economic standing in the society. Those who make more money and seem to be well off are considered the higher class, while those who work minimum wage are considered middle class they have money but most spend it all on paying bills, then there is the low class which I would consider the homeless and those who have nothing.
I think social class does affect the healthcare because before Obamacare came into effect if you didn't have health insurance at my local hospital and physician's office then you don't see a doctor, you see a nurse practitioner. If you can't pay your co-pay at the time of your visit at the local physician's office then you don't