| Suffolk County | Nassau County | The Hamptons | 
| Commack Dental Associate - Kevin A Martin DDS 164 Commack Rd Commack NY, 11725 (631) 499-3377 | Commack Dental Associate - Sara de Santis DDS 164 Commack Rd Commack NY, 11725 (631) 499-3377 | ||
| Commack Endodontics PC 164 Commack Rd Commack NY, 11725 (631) 462-4600 | Commack Oral & Maxiofacial Inc 160 Commack Rd Commack NY, 11725 (631) 499-7266 | ||
| Communication Remediation PC - Michael Ioannou DDS 2171 Jericho Turnpike Commack NY, 11725 (631) 499-5595 | Confident Smile Dental PC - Lana Gordon DDS 543 Hempstead Tpke Unit A West Hempstead NY, 11552 (516) 564-9444 | ||
| Conte Gabriel 877 Stewart Ave Garden City NY, 11530 (516) 222-1717 | Contemporary Dental Associate 110 Main St Center Moriches NY, 11934 (631) 878-3864 | ||
| Contemporary Dental Associate - Dean Delle Donne DDS 110 Montauk Hwy Moriches NY, 11955 (631) 878-4488 | Contemporary Dental Implant Centre 1035 Park Blvd Massapequa Park NY, 11762 (516) 797-1300 | ||
| Contemporary Dental Implants Center 260 W Sunrise Hwy Valley Stream NY, 11581 (516) 812-6578 | Cooper Barry C DDS PC 100 Harrison St Lawrence NY, 11559 (516) 239-4544 | ||
| Cooper Steven DDS 1025 Northern Blvd Roslyn NY, 11576 (516) 627-4151 | Coram-Selden Dental Group - George Kane DDS 280 Middle Country Rd Selden NY, 11784 (631) 732-9000 | ||
| Coram-Selden Dental Group - Lazarus Camesas DDS 280 Middle Country Rd Selden NY, 11784 (631) 732-9000 | Coram-Selden Dental Group - Tara Sarfraz DDS 280 Middle Country Rd Selden NY, 11784 (631) 732-9000 | ||
| Cornejo Rigoberto DDS 230 Hilton Ave Hempstead NY, 11550 (516) 481-8906 | Corrao Thomas DMD 53 Brentwood Rd Bay Shore NY, 11706 (631) 665-2052 | ||
| Costa Frank D D S 165 N Village Ave Rockville Centre NY, 11570 (516) 763-2653 | Costa Frank DDS 1228 Wantagh Ave Wantagh NY, 11793 (516) 679-7772 | ||