Exhibit 21.1



RADIATION THERAPY SERVICES, INC.



List of Subsidiaries



|                                 |  |                                                                                                                            |  |                |  |             |  
|-------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------- |  | -------------- |  | ----------- | -
|OWNER                            |  | SUBSIDIARY                                                                                                                 |  | STATE OF INC.  |  | % OWNERSHIP |  
|Radiation Therapy Services, Inc. |  | 21stCentury Oncology, Inc.                                                                                                 |  | Florida        |  | 100         | %
|                                 |  |                                                                                                                            | 
|Radiation Therapy Services, Inc. |  | California Radiation TherapyManagement Services, Inc.                                                                      |  | California     |  | 100         | %
|                                 |  |                                                                                                                            | 
|Radiation Therapy Services, Inc. |  | North California RadiationTherapy Management Services, Inc.                                                                |  | North Carolina |  | 100         | %
|                                 |  |                                                                                                                            | 
|Radiation Therapy Services, Inc. |  | Maryland Radiation TherapyManagement Services, Inc.                                                                        |  | Maryland       |  | 100         | %
|                                 |  |                                                                                                                            | 
|Radiation Therapy Services, Inc. |  | Nevada Radiation TherapyManagement Services, Inc.                                                                          |  | Nevada         |  | 100         | %
|                                 |  |                                                                                                                            | 
|Radiation Therapy Services, Inc. |  | New York Radiation TherapyManagement Services, Inc.                                                                        |  | New York       |  | 100         | %
|                                 |  |                                                                                                                            | 
|Radiation Therapy Services, Inc. |  | Financial Services of Southwest Florida, LLC(surviving entity in merger with Financial Services ofSouthwest Florida,
Inc.) |  | Florida        |  | 100         | %
|                                 |  |                                                                                                                            | 
|Radiation Therapy Services, Inc. |  | Radiation Therapy School forRadiation Therapy Technology, Inc.                                                             |  | Florida        |  | 100         | %



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|                                                     |  |                                                          |  |               |  |             |  
|---------------------------------------------------- |  | -------------------------------------------------------- |  | ------------- |  | ----------- | -
|OWNER                                                |  | SUBSIDIARY                                               |  | STATE OF INC. |  | % OWNERSHIP |  
|Radiation Therapy Services, Inc.                     |  | 21stCentury Oncology ofKentucky, LLC                     |  | Kentucky      |  | 100         | %
|                                                     |  |                                                          | 
|Radiation Therapy Services, Inc.                     |  | 21stCentury Oncology ofAlabama, Inc.                     |  | Alabama       |  | 100         | %
|                                                     |  |                                                          | 
|Radiation Therapy Services, Inc.                     |  | South County RadiationTherapy, LLC                       |  | Rhode Island  |  | 75          | %
|                                                     |  |                                                          | 
|Radiation Therapy Services, Inc.                     |  | Southern New EnglandRegional Cancer Center, LLC          |  | Rhode Island  |  | 62          | %
|                                                     |  |                                                          | 
|Radiation Therapy Services, Inc.                     |  | Devoto Construction ofSouthwest Florida, Inc.            |  | Florida       |  | 100         | %
|                                                     |  |                                                          | 
|Radiation Therapy Services, Inc.                     |  | 21stCentury Oncology ofNew Jersey, Inc.                  |  | New Jersey    |  | 100         | %
|                                                     |  |                                                          | 
|Maryland Radiation Therapy Management Services, Inc. |  | Northwest BaltimoreRadiation Therapy RegionalCenter, LLC |  | Maryland      |  | 90          | %
|                                                     |  |                                                          | 
|21stCentury Oncology of Kentucky, LLC                |  | Bluegrass Regional CancerCenter, LLP                     |  | Kentucky      |  | 90          | %
|                                                     |  |                                                          | 
|21stCentury Oncology, Inc.                           |  | Palms West RadiationTherapy, LLC                         |  | Florida       |  | 50          | %
|                                                     |  |                                                          | 
|21stCentury Oncology, Inc.                           |  | Palmetto RadiationAssociates, LLC                        |  | Florida       |  | 50          | %
|                                                     |  |                                                          | 
|New York Radiation TherapyManagement Services, Inc.  |  | Faxton Leasing, LLC                                      |  | New York      |  | 37.5        | %



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