Nathan Ionascu MD 149 Ridgewood Ter Chappaqua, New York, Phone: 914-238-4877 Company Name: Dr. Nathan Ionascu, MD Doctor Category: Pediatric Adolescent Medicine Profile Let this business know you found them on Westchester Magazine's Online Directories. Locations Chappaqua 149 Ridgewood Ter Chappaqua, New York 10514-3550 Claim/Edit Listing