Hijaama is not a field that can be taken up as a major/course anywhere in the world as far as I know. Hijaama is only a small part of a wider range of therapies and really only requires certification and a bit of training. It would be like asking for a degree on how to administer injections. Doesn't really involve a lot of time or science to learn how to do that. If you wanted to get into a more complex field which includes hijaama, you might want to look into homeopathic or naturopathic medicine. If you wanted to learn more about hijaama as a part of islamic therapy then maybe search online for Islamic medicine courses like this one here CLICK
Hijaama isn't considered a medical procedure. It's not something that doctors would prescribe for their patients for example, despite its numerous benefits. Of course as Muslims we know how great these benefits are alhemdulilah and it's great that we can learn to do this very simply. My point is, because it's not a medical procedure, it wouldn't be something taught in universities to doctors. If it was, the degree you'd be inquiring about would be medicine.