| Business | Phone |
| Ambrico Warshavsky & Co 1550 Deer Park Ave, Deer Park 11729 | (631) 243-0080 |
| H & R Block Tax Svc 1850 Deer Park Ave, Deer Park 11729 | (631) 242-0004 |
| H & R Block Tax Svc 40 Suffolk Pl, Deer Park 11729 | (631) 234-2939 |
| Jay Services Inc 44 W Jefryn Blvd # K, Deer Park 11729 | (631) 243-5050 |
| Henry Kayser 25 Andover Dr, Deer Park 11729 | (631) 242-0222 |