mfPHD Fortress™ – We Protect Your World... mfPHD, LLC serves hospitals, healthcare architectural firms and contractors across North America. Its pre-fabricated, modular, stainless steel construction method, proven for more than three decades in Europe, allows facilities to build faster, accommodate ongoing modifications with little to no affect on case schedules and is a key component of Infection Prevention strategies. Its flagship product, the mfPHD Fortress™ Room System, is being recognized and implemented at leading US hospitals.