Too much blood pressure meds?

Patient: I take Lisinopril 20mg bid, Coreg 25mg bid, Tekturna 150mg bid, and Lasix 40mg bid to control my blood pressure. I am 46 years old. My question is should they do test to see why my blood pressure is so high, and I need to take so much meds daily. Or is 8 pills a day OK

Doctor: