Hello.
I'm part of a consulting firm that does MACRA/MIPS support. (No, I'm not selling anything. This is free advice.
) Four of my MIPS clients are specialists, so I've got a couple of ideas that might help.
Looking at the specialty block for interventional radiology, it seems like most of the relevant measures are only available through a registry. The American College of Radiology has a registry. I would contact them and maybe get set up with them, or see if they have any ideas. Most of the generic measures, like documentation of current meds, already have high medians, so even with like 90% or 95%, you're still only getting 3 or 4 points.
For clinical improvement activities, I'll give you the 2 easiest that all of my specialists are using: decision support (IA_PSPA_16) and enhanced patient portal (IA_BE_4). For the first, if you turn on the CDSS rules in the EMR, that is sufficient. For the second, if your patients can enter info in the portal OR send the provider a message, you can claim it. Both of these also earn an ACI bonus. If you don't have a portal, another easy one to start is IA_BE_21, which means you give the patient self-management materials. (I would keep copies of what you give out as proof in case of an audit.)
ACI (or as it's now called, Promoting Interoperability, because let's just changes names because we can!) if it's the performance measures you need help on, I would concentrate on Patient Education, Medication Reconciliation, and Provide Access, because those are the ones you can control; you can't do much if the patients don't send you messages or view their info.
I hope some of this was helpful. I will say that all of my specialty practices are having trouble with quality measures, because their EMRs have limited eCQMs available.