Yes PMSSS also provides scholarships to the students who have cleared NEET and are pursuing MBBS, BDS, etc like courses. It doesn't matter where is your college what matters is that there are a total of 100 seats for medical students and if you fall in this merit according to your 12th marks then you will get the scholarship.
You have to apply for PMSSS and do the document verification similar to other students, the only difference will be you don't have to do the choice filling and no college will be allotted to you as you would have already been pursuing a medical course from one of the colleges.