How to contact fresenius medical care ag? 800-662-1237 The phone numbers and links below will help you locate specific FMCNA information regarding a variety of subjects. General inquiries or requests for information outside of North America: Fresenius Medical Care AG & Co. KGaA Contact information.How do i contact extremefresenius medical care? Fresenius Medical Care AG & Co. KGaA Contact information. Product training and product technical support 24/7: 800-227-2572What is fresenius medical cares largest market? North America is Fresenius Medical Care ’s largest market by far. The company operates more than 2,500 of its own dialysis clinics there, and treats more than 211,000 patients.Why choose fresenius medical care as your dialysis provider in jakarta? In the Greater Jakarta area, Fresenius Medical Care runs a dialysis center as part of a public-private partnership. The Indonesian government has decided to significantly increase the capacity of its hospitals and to make it easier to build private clinics. Dialysis patients are also set to benefit from this.