First thing, doctors (not all but many) back home are using their occupation as means of earning money rather than serving people. There are doctors in well facilitated areas but if you go to villages it's hard to find one. It's not just the case of very remote districts, but even in districts close to Kathmandu and other major cities. Health posts don't even have a person trained to administer vaccines, let alone docs. People who take care of health posts (sweepers, peons) are giving vaccines. It's a mess.

Doctors need motivation to work in remote places. If you look at current MBBS students back home, they go to field trips and health camps in remote villages and they absolutely enjoy it. But when it comes to a long term commitment to those areas, they run away. When you become a doctor, you take an oath to serve people first, not yourself. And that's the point doctors and medical students are missing. Healthcare backhome is turning into a money making business, just like here in the States. And doctors are one reason behind that - they provide service if only you pay them good. And a good pay is in the cities that house good/big hospitals and clinics. 

There are tons of problems like this I can write about all day but i've gotta study for my finals. Will get back. Thanks for starting this thread!