| The Centreville Medical Pavilion | Nassau | Bahamas |
RedBluff Tumor Inst
| RedBluff | CA |
| VA Long Beach Medical Cntre | Long Beach | CA |
| VA Greater Los Angeles | Los Angeles | CA |
| Fresno Cancer Center | Fresno | CA |
Trumbull Onc Cntr 15 Corporate Dr
| Trumbull | CT |
| VA Washington DC Medical Cntre | Washington | DC |
Memorial Ca Care Cntr (Base) (BR 264) 873 Sterthaus Ave Suite 110 | Ormand Beach | FL |
Holy Cross 4725 N. Federal Hwy | Ft. Lauderdale | FL |
21st Century Oncology Port Charlotte Base | Port Charlotte | FL |
21st Century Oncology 1120 Lee Blvd | Lehigh Acres | FL |
21st Century Onc South Naples(Br of 166) 1885 Southwest Parkway | Naples | FL |
21st Century Onc NNO (Br of 166) 820 Goodlette Road North | Naples | FL |
21st Century Onc SRO 3210 Fruitville Rd | Sarasota | FL |
21st Century Onc 571 Medical Drive | Englewood | FL |
21st Century Onc 959 Venice Ave | Venice | FL |
| 21st Cent Base | FT. Myers | FL |
| 21st Cent Branch | FT. Myers | FL |
| 21st Cent Branch | Cape Coral | FL |
| 21st Cent Branch | Bonita Springs | FL |
| 21st Century Onc | Coral Springs | FL |
| 21st Century Onc | Plantation | FL |
| 21st Century Onc | Tamarac | FL |
| 21st Century Onc | Deerfield | FL |
| Lakeland Regional Cancer Center | Lakeland | FL |
| VA Miami Medical Cntr | Miami | FL |
21st Century Oncology (Base)(Br 201,202,203) 6555 Cortez Road West | Bradenton | FL |
| VA James A Haley Medical Cntr | Tampa | FL |
| 21st Century Oncology (Base 318) | Crestview | FL |
| 21st Century Oncology (Base 318) | Destin | FL |
| Halifax Medical Center (Base) | Daytona Beach | FL |
| Halifax Medical Center (Branch of 331) | Ormand Beach | FL |
21st Century Oncology 21355 E. Dixie Hwy #111
| Aventura | FL |
21st Century Oncology 3426 N. Roosevelt Blvd | Key West | FL |
21st Century Oncology, PWO 12993 Southern Blvd | Loxahatchee | FL |
| VA Atlanta Medical Cnter | Atlanta | GA |
John B. Amos Cancer Center 1831 5th Ave | Columbus | GA |
Leeward Rad/Onc 91-2135 Fort Weaver Rd | Ewa Beach | HI |
Siouxland Reg Ca Cnter 230 Nebraska | Sioux City | IA |
Blessing Hospital Broadway at 11th | Quincy | IL |
| Dupage Onc Cntr | Winfield | IL |
| Berwyn | Berwyn | IL |
| Raymond G. Scott | Geneva | IL |
| VA Edward Hines Jr Medical Cnter | Hines | IL |
| Center for Comprehensive Cancer Care | Mt Vernon | IL |
| St Marys Good Samaritan Hospital | Centralia | IL |
| Northern IL Cancer Tx Center | Dixon | IL |
Elkhart General 600 East Blvd | Elkhart | IN |
Evansville Ca Cntr 700 North Burkhardt Rd | Evansville | IN |
Rad/Onc Assoc PC 7910 W. Jefferson, Suite 110 | FortWayne | IN |
| VA Richard L. Roudebush Medical Cntr | Indianapolis | IN |
Univ of Cattolica
| Rome | Italy |
Tammy Walker Cancer Center 511 S. Santa Fe Ave | Salina | KS |
| 21st Century Oncology (Base)(Branch 316&317) | Danville | KY |
| 21st Century Oncology (Base 315) | Louisville | KY |
| 21st Century Oncology (Base 315) | Frank Fort | KY |
| Tri-State Regional Cancer Centrer | Ashland | KY |
Romagosa-Lafayette(Base) 917 General Mouton Ave | Lafayette | LA |
| Overton Brooks Va Medical Center | Shreveport | LA |
| Willis Knighton Cancer Center | Shreveport | LA |
S.Suburban Onc Cntr 700 Congress Street | Quincy | MA |
Lahey Clinic Hospital (Base) (Br 102) 41 Mall Road | Burlington | MA |
Northeast Regional Rad/Onc (Br 101) Lahey-Northshore One Essex Drive | Peabody | MA |
| VA Boston Healthcare System | Jamaica Plain | MA |
Washington Adventist 7600 Carroll Ave | Takoma Park | MD |
| 21st Cent HRA | Clyde | MD |
Spectrum Health Downtown (B) (Butterworth) 100 Michigan Ave | Grand Rapids | MI |
Lakeshore Area Rad-Onc (Br) Spectrum Health 12642 Riley St | Holland | MI |
Spectrum Health East(Br) Blodgett 1840 Wealthy SE | Grand Rapids | MI |
VA Med Cntr 2215 Fuller St | Ann Arbor | MI |
John D. Dingell VA Medical Cnter 4646 John R. | Detroit | MI |
Saint Mary's Seton Cancer Cntre 800 South Washington Ave | Saginaw | MI |
| St. Mary's | Grand Rapids | MI |
Assoc In Radiation Oncology Oakwood Hospital & Med Cntr | Dearborn | MI |
| Western Michigan Cancer Center | Kalamazoo | MI |
| VA Minneapolis Medical Cnter | Minneapolis | MN |
| VA St. Louis Medical Cntr | St. Louis | MO |
| VA G.V.(Sonny) Montgomery Medical Cntr | Jackson | MS |
| Great Falls Clinic Cancer Care | Great Falls | MT |
Wayne Rad/Onc 2802 McLamb Place | Goldsboro | NC |
Regional Radiation Oncology P.A. (as of 2002 base practice of 21st Cent Onc 445 Biltmore Ave | Ashville | NC |
21st Century Oncology 801 W.H. Smith Blvd | Greenville | NC |
New Hanover Reg Med Cnter 1988 South 16th St | Wilmington | NC |
| Univ of Rad/Onc | Charlotte | NC |
| Mathews Rad/Onc | Mathews | NC |
| VA Durham Medical Cntr | Durham | NC |
| Lake Norman Radiation Oncology | Mooresville | NC |
Bergan Mercy Med Cnter (Base) (Br 59 & 98) 7710 Mercy Rd Suite 120 | Omaha | NE |
Midlands Cancer Cnter (Br 58) 11111 S. 84 St | Papillion | NE |
Immanuel Ca Center Branch of Bergan Mercy #58 6901 N. 72nd Street | Omaha | NE |
Clara Maass Med Cntr 1 Clara Maass Drive | Belleville | NJ |
Community Medical Center 99 Hwy 37 West | Tom's River | NJ |
MonMouth Med Cntr 300 2nd Ave | LongBranch | NJ |
St. Barnabas Med Cnter 94 Old Short Hills Rd | Livingston | NJ |
Newark Beth Israel Medical Center 201 Lyons Ave | Newark | NJ |
Princeton Rad/Onc Cntr 9 Centre Dr | Jamesburg | NJ |
Riverview Med Cntr One Riverview Plaza | Red Bank | NJ |
The Medical Center at Princeton 253 Witherspoon Street | Princeton | NJ |
Trinitas Hospital 925 E. Jersey Street | Elizabeth | NJ |
Ocean Medical Center 453 Jack Martin Blvd
| Brick | NJ |
Hunterdon Reg Ca Cntr Branch of 204 | Flemington | NJ |
Southern Ocean County Rad/Onc Branch of 146 | Manahawkin | NJ |
Pascack Valley Hospital
| Westwood | NJ |
Sparta Cancer Cntr (Br of 13) 89 Sparta Ave | Sparta | NJ |
| Center for Advanced Radiation Oncology | Toms River | NJ |
21st Century Oncology (Base)(Br 201,202,203) 6555 Cortez Road West | Voorhees | NJ |
| 21st Century Oncology (Base309) | Woodburg | NJ |
| 21st Century Oncology (Base309) | Willingboro | NJ |
| St. Michaels Medical Center | Newark | NJ |
Northern NJ Cancer Assoc @ The Cancer Center of HUMC | Hackensack | NJ |
| 21st Cent VVO Base | LasVegas | NV |
| 21st Cent VHO Branch | Henderson | NV |
| 21st Cent VLO Branch | Lake Meade | NV |
| 21st Cent VBO | Buffalo | NV |
| Nevada Cancer Institute | LasVegas | NV |
21st Century Oncology Base:ROC1,ROC2,ROC3,HEN 624 W Tonopah Dr | LasVegas | NV |
21st Century Oncology, ROC2 3980 S. Eastern Ave
| LasVegas | NV |
21st Century Oncology, ROC3 3150 N Tenaya Way, Suite 160 | LasVegas | NV |
21st Century Oncology, HEN 52 N. Pecos Rd | LasVegas | NV |
North Shore Med Accelerator (Base) 989 Jericho Turnpike | SmithTown | NY |
St. John's Episcopal Hospital Branch | SmithTown | NY |
Albany Medical Cnter 47 New Scotland | Albany | NY |
St. Peter's 317 South Mnning Blvd | Albany | NY |
Peninsula Hospital 51-51 Beach Channel Drive | FarRockaway | NY |
NY Prespyterian Hospital Stich Radiation Center Cornell Univ & Weill Med College 525 E. 68th Street | NY | NY |
NY Hosp Queens 56-45 Main Street | Flushing | NY |
New York Linear Accelerator 1421 3rd Ave | NY | NY |
Beth Isreal (Base) (Br 76 & 75) Milton & Carroll Petrie Campus First Avenue at 16th Street | NY | NY |
St. Lukes/Roosevelt (Br 74) 1000 10th Ave | NY | NY |
Phillips Ambulatroy Care Cnter (Br 75) 10 Union Square | NY | NY |
Buffalo Rad/Onc 45 Spindrift | Williamsville | NY |
Lincoln 234 East 149th St | Bronx | NY |
Lutheran 150 55th Street | Brooklyn | NY |
Community Rad/Onc 2270 Kimball Street | Brooklyn | NY |
Cancer Treatment Services (Base)(Br 277) 21 Orchard | Hornell | NY |
Ellis Hospital 1101 North St | Schenetony | NY |
Falk Ca Cnter @ Arnot Ogden Medical Center 600 Roe Ave | Elmira | NY |
| Kings Co | Brooklyn | NY |
Long Island
| Brooklyn | NY |
NY Rad-Onc Assoc 106-14 70th Ave | Forrest Hills | NY |
North Shore Radiation Oncology 181 Belle Mead Road | E. Setauket | NY |
Orange County Radiation Oncology 2565 US Route 9W | Cornwall | NY |
Our Lady of Mercy Medical Center 600 E. 233rd Street | Bronx | NY |
21st Century Oncology Riverhill Branch Yonkers | Yonkers | NY |
State Univ of NY StonyBrook (Base)(BR 129) Nichols Road | StonyBrook | NY |
Buffalo Medical Group 295 Essjay Rd | Williamsville | NY |
Thomas O'Conner Western NY Medical Park 550 Orchard Park Road | West Seneca | NY |
Champlain Valley Physicians Hospital 75 Beekman | Plattsburg | NY |
| Brookdale | Brooklyn | NY |
| LongIsland | Brooklyn | NY |
Advanced Radiation Oncology Services 111 North Highland Ave | Nyack | NY |
Cabrini Med Cntr
| NY | NY |
Rad/Onc Group PC 3633 Commerce Place | Hamburg | NY |
Rad/Onc Group PC 6932 Williams Rd, Suite 1200 | Niagara Falls | NY |
Rad/Onc Group PC The CA Cntre at Brooks Memorial Hospital 529 Central Ave | Dunkirk | NY |
Northport VA Medical Center 79 Middleville Road | Northport | NY |
VA NewYork Harbor Health Care 800 Poly Place | Brooklyn | NY |
| Glens Falls Hospital | Glens Falls | NY |
| NYOH-Base | Latham | NY |
| NYOH-Branch | Amsterdam | NY |
| NYOH-Branch | Rexford | NY |
| NYOH-Branch | Hudson | NY |
| West Chester Medical Center | Valhalla | NY |
21st Cent LHC Seed Implant site base 21st Yonkers | Bronxville | NY |
21st Cent SJR Seed Implant site base 21st Yonkers | Yonkers | NY |
21st Cent SJM Seed Implant site base 21st Yonkers | Yonkers | NY |
21st Cent NWM Seed Implant site base 21st Yonkers | Mt Kisko | NY |
| 21st Cent St. Lukes Base | Utica | NY |
21st Cent Regional Cancer Center Branch | Herkimer | NY |
21st Cent Regional Cancer Center Branch | Rome | NY |
Orange Regional Medical Center Arden Hill Campus | Goshen | NY |
Orange Regional Medical Center Branch of Arden Hill Campus | Middletown | NY |
Orange Regional Medical Center Branch of Arden Hill Campus | Middletown | NY |
Orange Regional Medical Center Branch of Arden Hill Campus | Goshen | NY |
Radiation Oncology Group (Br of 186) Mount St. Mary Hosptial 5300 Military Rd | Lewiston | NY |
Radiation Oncology Group (Br of 186) Niagra Falls Memorial Medical Cntr 621 Tenth Street | Niagara Falls | NY |
Regional Cancer Care 1415 Buffalo St | Olean | NY |
| VA Albany Medical Cnter | Albany | NY |
| VA Bronx Medical Cntr | Bronx | NY |
| North Fork Radiation Oncology | Riverhead | NY |
| Our Lady of Lourdes Memorial Hospital | Binghamton | NY |
| Buffalo Cancer Center (Branch of 78) | Williamsville | NY |
Medical College of Ohio 3000 Arlington Ave | Toledo | OH |
| VA Louis Stokes Medical Cntr | Cleveland | OH |
| VA Dayton Medical Cnter | Dayton | OH |
| Kettering Medical Center | Kettering | OH |
Northeast Radiation Oncology Cntr 746 Jefferson Ave Branch sites 14, 271,272 | Scranton | PA |
Upper DelawareValleyCACntr 113 Pocono Drive | Milford | PA |
The Dale & Frances Hughes CA Cntr Pocono Medical Center 231 East Brown Street | East Stroudsburg | PA |
UPMC Northwest Radiation Oncology 100 Fairfield Drive | Seneca | PA |
Jefferson Radiation Oncology Greater Pittsburg Cancer Center 521 Bruceton Road | Pittsburgh | PA |
| Pottstown Scanning & Treatment | Pottstown | PA |
| Butler Regional Cancer Center (Br of 254) | Butler | PA |
| Radiation Medicine Specialists | Forty Fort | PA |
Northeast Radiation Oncology Cntr (Br of 13) 1110 Meade | Dunmore | PA |
| VA Philadelphia Medical Cntr | Philadelphia | PA |
| Simon Kramer Inst (Base)(Branch314) | New Philidelphia | PA |
| St Lukes Cancer Center | Bethlehem | PA |
High Point Cancer Center 700 Horizon Circle | Chalfont | PA |
Grand View Hospital 700 Lawn Ave | Sellersville | PA |
| Ephrata Cancer Center (Pottstown PA) | Ephrata | PA |
| Professional Radiation Oncology Partners | Scranton | PA |
| VA San Juan Medical Center | San Juan | PR |
| 21st Century-Southern New England Cancer Cntr | Woonsocket | RI |
| 21st Century-S County | Wakefield | RI |
21st Cent Oncology, RWR 50 Maude Street | Provedence | RI |
Southeast Rad/Onc Group,PA Piedmont/Carolinas Rad/Ther Cntr | Rock Hill | SC |
| 21st Century | Clyde | SC |
| VA Mountain Home Medical Cnter | Mountain Home | TN |
| VA Memphis Medical Cnter | Memphis | TN |
| VA Michael E. DeBakey Medical Cntr | Houston | TX |
| VA Dallas Medical Cntr | Dallas | TX |
Cancer Centers of Virginia Sentara Careplex Hospital | Hampton | VA |
| VA Hunter Holmes McGuire Medical Cntr | Richmond | VA |
| Sentara Norfolk General Hospital | Norfolk | VA |
| Sentara Virgina Beach General Hospital | Virginia Beach | VA |
| Sentara Lake Wright Radiation Oncology | Norfolk | VA |
Tacoma Rad/Onc -Jackson Hall 314 Martin Luther King Jr Way Suite 11 | Tacoma | WA |
Tacoma Rad/Onc St. Joseph's | Tacoma | WA |
Tacoma Rad/Onc South Hill Med Cntr | Pallyup | WA |
| VA Puget Sound Health Care System | Seattle | WA |
| VA Clement J. Zablocki Medical Cntr | Milwaukee | WI |
Schiffler Oncology Center 1 Medical Park | Wheeling | WV |
Princeton Rad/Onc (Base)(Br 181) 210 New Hope Rd | Princeton | WV |
Greenbrier Valley Ca Cnter (Br of 63)
| Lewisburg | WV |
| St Mary's Medical Center | Huntington | WV |
Raleigh Regional Cancer Center 275 Dry Hill Rd | Beckley | WV |