Does personalized medicine apply to diagnosis of typical conditions like dilated cardiomyopathy? what tests are needed?

Concierge?: By "personalized" medicine, i'm presuming you're referring to "concierge" medicine since all medical practice should be personalized. Concierge is a business model-you pay a regular fee and the doc is "your doc". How complete the care will be depends on his/her specialty. Dilated cardiomyopathy is diagnosed by echo and confirmed by heart cath. Cardiologists routinely take care of such patients.

Echo: Cardiomyopathy is a weakened heart muscle. The diagnosis can be confirmed by an echocardiogram which takes an ultrasound picture of the heart and can show its pumping function. Further tests may need to be done to assess the cause. These tests can include a cardiac cath to rule out coronary artery disease, and even rarely a biopsy of the heart muscle. Personalized medicine is non specific term.