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| Subsidiaries             |   |           | Jurisdiction ofIncorporation |   |   |   | Percentage OwnedBy Registrant |   |
|-------------------------------|--------|----------------|------------------------------|--------|--------|--------|-------------------------------|--------|
|                          |   |           |                         |   |   |   |                          |
| DCA of Adel, LLC              |   | Georgia        |                         |   | 100%   |   |                          |
| DCA of Calhoun, LLC           |   | Georgia        |                         |   | 100%   |   |                          |
| DCA of Central Valdosta, LLC  |   | Georgia        |                         |   | 100%   |   |                          |
| DCA of Fitzgerald, LLC        |   | Georgia        |                         |   | 100%   |   |                          |
| DCA of Hawkinsville, LLC      |   | Georgia        |                         |   | 80%    |   |                          |
| DCA of Royston, LLC           |   | Georgia        |                         |   | 100%   |   |                          |
| DCA of So. Ga., LLC           |   | Georgia        |                         |   | 100%   |   |                          |
| DCA of Chesapeake, LLC        |   | Maryland       |                         |   | 100%   |   |                          |
| DCA of Chevy Chase, LLC       |   | Maryland       |                         |   | 80%    |   |                          |
| DCA of Hyattsville LLC        |   | Maryland       |                         |   | 100%   |   |                          |
| DCA of North Baltimore, LLC   |   | Maryland       |                         |   | 100%   |   |                          |
| DCA of West Baltimore, LLC    |   | Maryland       |                         |   | 75%    |   |                          |
| DCA of Rockville, LLC         |   | Maryland       |                         |   | 100%   |   |                          |
| DCA of Manahawkin, Inc.       |   | New Jersey     |                         |   | 100%   |   |                          |
| DCA of Vineland, LLC          |   | New Jersey     |                         |   | 51%    |   |                          |
| DCA of Cincinnati, LLC        |   | Ohio           |                         |   | 60%    |   |                          |
| DCA of Columbus, LLC          |   | Ohio           |                         |   | 100%   |   |                          |
| DCA of Delaware County, LLC   |   | Ohio           |                         |   | 60%    |   |                          |
| DCA of Eastgate, LLC          |   | Ohio           |                         |   | 86%    |   |                          |
| DCA of Kenwood, LLC           |   | Ohio           |                         |   | 86%    |   |                          |
| DCA of Norwood, LLC           |   | Ohio           |                         |   | 100%   |   |                          |
| DCA of Toledo, LLC            |   | Ohio           |                         |   | 70%    |   |                          |
| DCA of Camp Hill, LLC         |   | Pennsylvania   |                         |   | 100%   |   |                          |
| DCA of Carlisle, Inc.         |   | Pennsylvania   |                         |   | 80%    |   |                          |
| DCA of Chambersburg, Inc.     |   | Pennsylvania   |                         |   | 80%    |   |                          |
| DCA of Lemoyne, Inc. (1)      |   | Pennsylvania   |                         |   | 100%   |   |                          |
| DCA of Mechanicsburg, LLC     |   | Pennsylvania   |                         |   | 100%   |   |                          |
| DCA of Pottstown, LLC         |   | Pennsylvania   |                         |   | 80%    |   |                          |
| DCA of Selinsgrove, LLC       |   | Pennsylvania   |                         |   | 100%   |   |                          |
| DCA of Wellsboro, Inc.        |   | Pennsylvania   |                         |   | 100%   |   |                          |
| DCA of York, LLC              |   | Pennsylvania   |                         |   | 60%    |   |                          |
| Keystone Kidney Care, Inc.(2) |   | Pennsylvania   |                         |   | 100%   |   |                          |
| York Realty Holdings, LP(3)   |   | Pennsylvania   |                         |   | 60%    |   |                          |
| York Realty Managers, LLC(4)  |   | Pennsylvania   |                         |   | 100%   |   |                          |
| DCA of Barnwell, LLC          |   | South Carolina |                         |   | 100%   |   |                          |
| DCA of Edgefield, LLC         |   | South Carolina |                         |   | 100%   |   |                          |
| DCA of South Aiken, LLC       |   | South Carolina |                         |   | 100%   |   |                          |
| DCA of Ashland, LLC           |   | Virginia       |                         |   | 80%    |   |                          |
| DCA of Warsaw, LLC            |   | Virginia       |                         |   | 91%    |   |                          |

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