| Business | Phone |
| Brentwood Family Health Center 1869 Brentwood Rd, Brentwood 11717 | (631) 853-3400 |
| Suffolk County Mental Health 1841 Brentwood Rd, Brentwood 11717 | (631) 853-7300 |
| Suffolk County Public Health 1869 Brentwood Rd, Brentwood 11717 | (631) 854-2341 |