| Business | Phone |
| Mary Bergmann 97 Union Ave, Islip 11751 | (631) 224-7988 |
| Enterprise Process Svc 584 Main St, Islip 11751 | (631) 224-1334 |
| Edward M Gould 374 Islip Ave, Islip 11751 | (631) 581-5497 |
| John R Haberman 165 Islip Ave, Islip 11751 | (631) 581-5890 |
| Horizon Land 584 Main St, Islip 11751 | (631) 224-1345 |
| Robert Pinnola Law Office 560 Main St # 1, Islip 11751 | (631) 581-6592 |
| Rosicki & Rosicki 152 Islip Ave # 18, Islip 11751 | (631) 224-4678 |
| Shlimbaum & Shlimbaum 265 Main St, Islip 11751 | (631) 277-4300 |
| Alex Shumicky 254 Islip Ave, Islip 11751 | (631) 224-5260 |
| Treyvus & Konoski 152 Islip Ave, Islip 11751 | (631) 859-1111 |