| Business | Phone |
| Child Heath Specialty Clinics 910 N Eisenhower Ave, Mason City 50401 | (641) 422-7388 |
| Mason City Clinic 250 S Crescent Dr, Mason City 50401 | (641) 422-6783 |
| Mercy Dermatology Clinic 1010 4th St Sw 330, Mason City 50401 | (641) 422-5151 |
| Mercy Family Clinic 1010 4th St Sw 120, Mason City 50401 | (641) 422-6020 |
| Mercy Family Clinic 621 S Illinois Ave, Mason City 50401 | (641) 422-6900 |
| Mercy Family Medicine Rsdncy 101 S Taylor Ave, Mason City 50401 | (641) 422-7766 |
| Mercy Gynecologic & Birthing 1010 4th St Sw 220, Mason City 50401 | (641) 422-5100 |
| Mercy Healthworks 1501 4th St Sw, Mason City 50401 | (641) 422-5244 |
| Mercy Internal Med 1000 4th St Sw, Mason City 50401 | (641) 422-6999 |
| Neurosurgery Of North Iowa Pc 1010 4th St Sw 105, Mason City 50401 | (641) 422-7847 |
| Quality Medical Svc Inc 18 2nd St Ne, Mason City 50401 | (641) 423-4592 |
| Veterans Administration Clinic 910 N Eisenhower Ave, Mason City 50401 | (641) 421-8077 |