Is It Excessive For My Father To Be On Amlodipine/Valsartan, Nebivolol, Terazosin, And Triamterene/HCTZ?

My father is taking the following prescription meds. I m concerned that he has 4 meds for hypertension. Is this excessive? Medication     Generic For Levocetirizine Dihydrochloride Tabs     Xyazl Tabs Atorvastatin Tabs     Lipitor Donepezil HCL Tabs     Aricept Tbs Clopidogrel Bisulfate Tabs      Plavix Tabs Amlodipine/Valsartan Tabs     Exforge Tabs 10/?? Nebivolol Tabs     Bystolic Tabs Terazosin Caps     Hytrin Caps Triamterene/Hctz Caps     Dyazide Caps Tartrate Tabs      Ambien Tabs