A subcutaneous implantable vascular access port reduces the risk of infection by creating a larger surface area for needle access with multiple palpable windows. These multiple needle access sites inhibit skin breakdown and thus reducing the risk of infection. This dual lumen port catheter is designed for both high pressure and high flow fluid volume blood flow rates. The port is suitable for dialysis, electrophoresis and a variety of other medical treatment functions. The interchangeable replaceable parts of the port assembly allow easier maintenance and more precise placement positions within the patient.