Dear Charles,
You could ask (his office staff or him) if he is board certified in EP and if he belongs to the North American Society of Pacing and Electrophysiology (NASPE). These are two markers of his training and commitment to continuing education but are not the only things on which to base a judgement. Experience, training communication skills and the referral from your doctor are all very important as well. An EP study is a standard test and he should have done at least 100 to have adequate experience. The type of equipment the test is performed on is not as important as the doctor using the equipment. We use a Prucka system with a Bloom stimulator in our lab but this will vary significantly from lab to lab.