Alan Gass, MD Top CardiologistTop Doctor 95 Grasslanda Rd Valhalla, New York, 10595 Phone: 914-909-6900 Company Name: WMCHealth Advanced Physician Services Doctor Category: Cardiology and Cardiovascular Disease Profile Let this business know you found them on Westchester Magazine's Online Directories. Locations Valhalla 95 Grasslanda Rd Valhalla, New York 10595 Claim/Edit Listing