The final figure claims less than 0.3 general practitioners per 100,000. That would amount to around 1000 general practitioners in the country which is at least two orders of magnitude low.
You're saying there are 100,000 general practitioners in the US? Even that number may be low, as this WSJ article says the US has "352,908 primary-care doctors". The article also says there are around 954,000 total doctors in the US.