Yes, there are a couple of different programs. There is the HPSP (health professional scholarship program) which will pay tuition, fees, books, and a monthly stipend of $2100/month for two years in exchange for 3 years active duty. There is also the STRAP program which gives financial assistance in exchange for a payback in the Reserve.
Both of these programs are subjected to availability and budget. I can tell you personally it will take over 6 months for the HPSP to apply and finally getting commissioned. I ended up getting just under $100k for the 2 years I was in the program.
