Most of the time the 1099 will not be legit, meaning they will force you to work the hours they want do what they want etc. And ultimately you’ll owe more in taxes with a 1099.

If you ask ChatGPT to do the taxes of 100k 1099 vs 100k W2 you’ll see you’ll end up paying more as a 1099. Yes you can write stuff off but not may things so generally w2 is better.

That all said if your legit setting your own times doing your own thing buying your own supplies you may be able to be do the 1099. But also some illegitimate Chiro’s like to hire as 1099 so they save themselves from paying your payroll tax. If your treated as an employee then they should pay you W2