When I lived in POP and was hospitalized for a week (6 months' pregnant) the total bill came to around $800 USD or so at the end.
I'm Canadian, so paying for this stuff was a big deal to me! Not fair!
Look for the hidden costs and implications w your insurance, too. For example, I was pregnant but not married, and only learned at 6 months' in that due to me being single my insurance wouldn't cover as much (DR insurance)
Also, the hospital will give you a bill at the end for anything you request (I got charged for fresh towels, juice, bottled water, etc.)
When I was there it was less than 500 pesos for a routine consult with my doctor at Bournigal (public hospital).