I trained there. It's definitely focused on interventional pain management as opposed to purely medical management of chronic pain, but even so you'll still get more than enough exposure as a fellow to confidently handle medication management for a wide variety of chronic pain states. In general, the program is fairly heavy on surgical aspect of interventional pain management because of Erdek's practice, which focuses on cancer pain and neuromodulation, and Williams' patient population, which has a fair number of candidates for neuromodulation. Christo is also a big advocate for stimulators, so you'll get quite a few trials and implants when you work with him.
The autonomy is excellent there--it's definitely a fellow driven practice setting. If you don't thrive in a setting with minimal "hand holding" you'll struggle to do well at Hopkins. Formal didactics are pretty good but you definitely have to do a lot of reading at home to get the most out of the year. Tons of crazy pathology there from all over the world. Raja and Cohen have patients (literally) all over the world. It's pretty cool to take care of the international patients, including royal family members. You'll get tons of bread and butter pathology from local patients but also a big dose of truly weird crap from the worldwide referral base.
Job prospects after the fellowship are fantastic. The name definitely helps secure interviews in coveted locations, practices, etc. If you want to go into academics, you're golden. Great place to launch an academic career if that's your thing, but most grads go into private practice.
Overall, I had a great experience at Hopkins. Like every program, there are drawbacks and frustrations there, but on balance it's an outstanding place to train. No regrets on my end.
