It looks like the American Board of Radiology has their own examination centers too. Maybe they will work together and use each other's facilities?
http://www.theabr.org/abr-all-dates-and-locations
Lots of new information in the board's newest newsletter:
http://www.abpath.org/images/newsletters/2015-2ABPExaminer.pdf
MOC PART III (ASSESSMENT OF KNOWLEDGE, JUDGMENT, AND SKILLS)
ABP MOC Part III requirements allow diplomates who hold both primary (AP and/or CP) and subspecialty certifications to sit for a single examination that includes 50 primary and 150 subspecialty questions, graded as a single 200-question exam. Successful diplomates will fulfill Part III MOC requirements for both certificates. The ABP publishes comprehensive study guides for the MOC exam modules on our website. The MOC exams do not include glass slides or virtual microscopy questions.
REMOTE, SECURE TESTING
This fall, the ABP conducted a pilot to administer the MOC Part III exams remotely (from home, office, or other site of the diplomates’ choosing). The ABP recognizes the burden of time, travel, and associated costs for coming to the Tampa exam center for their MOC exam and have implemented remote testing in response to that feedback. For remote testing, diplomates are required to do a system check (hardware and software) and take a practice exam prior to taking their MOC exam. Diplomates are video recorded while taking the exam for security purposes, so they must have a webcam. Remote exams will be available for a two week window of time in March. Diplomates will still have the option of taking their MOC exams in the Tampa exam center.
Because of the increased cost for remote testing and security monitoring, the fee for the MOC Part III exam is now $700, and as always, covers all exams taken during the same exam session (spring or fall) regardless of the number of exams taken (primary and subspecialty). See the ABP Web site for examination deadlines, dates, and registration information.
ABP SPRING AP AND CP EXAMINATIONS OFFERED IN TUCSON, AZ [Looks like this isn't for MOC tho]
The ABP is partnering with the American Board of Radiology to use the ABR examination center in Tucson, AZ. They have a facility similar to the Tampa test center and microscopes will be provided, just as in Tampa. Applicants for certification can select either the Tampa or the Tucson test center for their spring exams on their application form. Exams will be given in Tucson June 20-25, 2016.