| Business | Phone |
| Mason City Clinic General Rdly 250 S Crescent Dr, Mason City 50401 | (641) 422-6620 |
| Pathology Associates 1000 4th St Sw, Mason City 50401 | (641) 422-7488 |
| Radiation Oncology Assoc 1000 4th St Sw, Mason City 50401 | (641) 422-6330 |
| Mercy Heart Ctr 1000 4th St Sw, Mason City 50401 | (641) 422-6730 |
| Mason City Clinic Pc-Plastic 250 S Crescent Dr, Mason City 50401 | (641) 422-6680 |
| Mason City Clinic Pc Psychtry 5 N Federal Ave, Mason City 50401 | (641) 422-6850 |
| Mercy Women's Health Ctr 1010 4th St Sw 240, Mason City 50401 | (641) 422-6000 |