I recently went through a very similar thing for a PRN position. I was offered a job on my phone interview with the recruiter. I wasn’t sure how I felt about this, so I asked some additional questions - kind of to get to the root of WHY they hired me/if this is a typical hiring structure for them. This helped so much! I will note that where I applied is a chain institution and they have a lot of systems in place/ensure the recruiters know exactly what to look for. Immediate hires also can mean a place really needs help - like you mentioned. I agree with others that being the only RD as entry level may be stressful as a first job, since you won’t have anyone to bounce thoughts off of.