Comments on breast cancer radiation experiences

I recently had lumpectomy/sentinel node surgery and the surgery pathology results state that the margins and sentinel nodes do not show signs of cancer.
I will have to get radiation, and the doctor will let me know if I need some type of chemo and/or medications.
Nurse said that she thinks radiation is standard, and will be the same no matter where I get it.
Will I get a prescription for radiation that can be filled anywhere?  
How important is it to go to the ‘best’ radiation facility one can find?
Or are all radiation facilities considered equal?
Thanks.

Below is my diagnosis :
Infiltrating ductal carcinoma left breast T1NOMO.
Combined grade 2/3 present within 90% of the tissue cores.
Ductual carcinoma in situ clinging, cribriform and solid growth patterns, with comedonecrosis and calcifications present, also present in almost all the cores.  
The biopsy  pathology report reads:
Differentiation:  Moderately differentiated
Nuclear Grade: 2/3 Moderate variation in size and shape
In Situ Carcinoma:  Ductal carcinoma in situ (DCIS)
DCIS Architectural Pattern:  Solid, cribriform, flat (clinging)
Nuclear Grade:  Intermediate
Necurosis:  Moderate, in ductaul carcinoma in situ
Calcifications:  in ductal carcinoma in situ
Results of prognostic and therapeutic analysis by IHC and FISH:
HER2 by FISH: result , negative, prognostic grouping: favorable
ER by IHC : result 100 % , prognostic grouping : favorable
PR by IHC : result 30 %, prognostic grouping: favorable
P53 by IHC : result 0%, prognostic grouping: favorable
K16 by IHC: result <5%, prognostic grouping: favorable

[bluebutterfly2222]

Hi again,

As I suggested when I responded to your previous question, it helps us to provide better answers when people add their additional related questions to their original threads. It also helps those readers interested in following the  discussion to know when you have posted again.

If possible, please cut and paste this new question to your previous thread (link provided below), where it says "post a comment." Thanks!

http://www.medhelp.org/posts/Breast-Cancer/Newly-diagnosed--would-like-some-advice/show/1397349?personal_page_id=1884836#post_6373818