Number of Cancer Cases Enrolled in Part D

Number of Patients with Part D Enrollment

The following tables list the number of persons appearing in the SEER-Medicare data who are enrolled in Medicare Part D as well as the total number of patients who were eligible to enroll according to the MBSF file. The tables were generated separately for patients not enrolled in Managed Care and for those enrolled in Managed Care only. The results were produced for three calendar years: year of diagnosis, year before diagnosis, and year after diagnosis; for all patients and by cancer site for patients with a first primary cancer. The results are further broken out by a patient's year of diagnosis, allowing for the identification of patients diagnosed during a specific year who were also enrolled in Medicare Part D during the three calendar year time periods.

Number of SEER-Medicare Cancer Patients with Part D Enrollment by Diagnosis Year 2007-20171
Diagnosis Year Cancer Site Cancer patients2 Enrolled in Part D during the calendar year of diagnosis Cancer patients3 Enrolled in Part D during the calendar year prior to diagnosis Cancer patients4 Enrolled in Part D during the calendar year after diagnosis
N N % N N % N N %
2007 All first primary cancers5 156,026 74,452 47.7 148,662 N/A N/A 123,063 62,211 50.6
Breast 19,241 10,016 52.1 18,216 N/A N/A 18,288 10,255 56.1
Colorectal 16,535 8,312 50.3 15,893 N/A N/A 13,516 7,254 53.7
Lung 23,733 11,816 49.8 22,691 N/A N/A 13,396 7,056 52.7
Prostate 27,337 11,215 41.0 25,562 N/A N/A 26,290 11,754 44.7
Other 69,180 33,093 47.8 66,300 N/A N/A 51,573 25,892 50.2
All other primary cancers6 54,664 25,517 46.7 52,920 N/A N/A 43,630 21,609 49.5
2008 All first primary cancers5 151,025 74,172 49.1 143,403 66,958 46.7 118,720 60,546 51.0
Breast 18,999 9,867 51.9 17,848 8,869 49.7 18,097 9,878 54.6
Colorectal 15,731 8,146 51.8 15,105 7,375 48.8 12,662 6,833 54.0
Lung 23,175 12,031 51.9 22,123 10,963 49.6 13,076 7,091 54.2
Prostate 24,592 10,284 41.8 22,853 8,933 39.1 23,640 10,631 45.0
Other 68,528 33,844 49.4 65,474 30,818 47.1 51,245 26,113 51.0
All other primary cancers6 55,064 25,967 47.2 53,142 23,941 45.1 44,196 21,805 49.3
2009 All first primary cancers5 146,284 73,304 50.1 139,219 66,907 48.1 115,484 60,347 52.3
Breast 18,647 9,869 52.9 17,616 9,032 51.3 17,758 9,970 56.1
Colorectal 14,635 7,615 52.0 14,084 7,026 49.9 11,791 6,428 54.5
Lung 22,495 11,802 52.5 21,531 10,910 50.7 12,897 7,081 54.9
Prostate 22,887 10,059 44.0 21,301 8,789 41.3 22,048 10,383 47.1
Other 67,620 33,959 50.2 64,687 31,150 48.2 50,990 26,485 51.9
All other primary cancers6 56,109 27,387 48.8 54,364 25,573 47.0 45,218 23,190 51.3
2010 All first primary cancers5 142,916 72,960 51.1 136,167 66,850 49.1 112,960 60,736 53.8
Breast 18,078 9,718 53.8 17,076 8,910 52.2 17,280 9,842 57.0
Colorectal 13,861 7,370 53.2 13,358 6,826 51.1 11,168 6,287 56.3
Lung 21,653 11,613 53.6 20,809 10,722 51.5 12,295 6,974 56.7
Prostate 22,048 9,896 44.9 20,532 8,763 42.7 21,176 10,271 48.5
Other 67,276 34,363 51.1 64,392 31,629 49.1 51,041 27,362 53.6
All other primary cancers6 56,616 28,136 49.7 54,883 26,458 48.2 45,932 24,012 52.3
2011 All first primary cancers5 142,775 75,239 52.7 135,804 67,970 50.1 113,544 66,113 58.2
Breast 18,409 10,256 55.7 17,332 9,255 53.4 17,546 10,799 61.5
Colorectal 13,302 7,373 55.4 12,808 6,745 52.7 10,749 6,542 60.9
Lung 21,100 11,442 54.2 20,231 10,469 51.7 12,276 7,367 60.0
Prostate 22,150 10,385 46.9 20,623 9,079 44.0 21,313 11,390 53.4
Other 67,814 35,783 52.8 64,810 32,422 50.0 51,660 30,015 58.1
All other primary cancers6 57,734 29,568 51.2 55,887 27,245 48.8 47,081 26,677 56.7
2012 All first primary cancers5 139,446 79,744 57.2 130,930 67,843 51.8 110,267 74,924 67.9
Breast 18,521 11,063 59.7 17,173 9,294 54.1 17,667 12,566 71.1
Colorectal 12,866 7,547 58.7 12,233 6,527 53.4 10,394 7,221 69.5
Lung 21,173 12,421 58.7 20,105 10,878 54.1 12,201 8,428 69.1
Prostate 18,497 9,533 51.5 16,877 7,656 45.4 17,701 11,326 64.0
Other 68,389 39,180 57.3 64,542 33,488 51.9 52,304 35,383 67.6
All other primary cancers6 59,548 33,657 56.5 57,227 29,177 51.0 48,269 32,612 67.6
2013 All first primary cancers5 137,640 90,725 65.9 129,796 71,994 55.5 109,124 75,942 69.6
Breast 18,448 12,675 68.7 17,193 10,027 58.3 17,653 12,779 72.4
Colorectal 12,078 8,064 66.8 11,486 6,440 56.1 9,712 6,857 70.6
Lung 20,490 13,803 67.4 19,545 11,254 57.6 11,992 8,510 71.0
Prostate 17,711 10,784 60.9 16,297 8,063 49.5 16,890 11,076 65.6
Other 68,913 45,399 65.9 65,275 36,210 55.5 52,877 36,720 69.4
All other primary cancers6 60,486 39,841 65.9 58,278 32,057 55.0 49,430 34,171 69.1
2014 All first primary cancers5 137,802 93,220 67.6 130,340 83,770 64.3 109,542 78,138 71.3
Breast 18,451 13,030 70.6 17,265 11,647 67.5 17,612 13,157 74.7
Colorectal 11,895 8,002 67.3 11,326 7,195 63.5 9,598 6,855 71.4
Lung 20,457 13,929 68.1 19,527 12,683 65.0 12,199 8,712 71.4
Prostate 17,012 10,755 63.2 15,726 9,270 58.9 16,164 10,931 67.6
Other 69,987 47,504 67.9 66,496 42,975 64.6 53,969 38,483 71.3
All other primary cancers6 61,576 42,070 68.3 59,417 38,776 65.3 50,479 36,056 71.4
2015 All first primary cancers5 139,476 97,612 70.0 131,921 87,852 66.6 111,746 82,411 73.7
Breast 18,725 13,756 73.5 17,568 12,320 70.1 17,940 13,839 77.1
Colorectal 11,822 8,252 69.8 11,250 7,485 66.5 9,496 6,984 73.5
Lung 20,453 14,308 70.0 19,554 13,121 67.1 12,382 9,181 74.1
Prostate 17,987 11,989 66.7 16,719 10,427 62.4 17,253 12,147 70.4
Other 70,489 49,307 69.9 66,830 44,499 66.6 54,675 40,260 73.6
All other primary cancers6 62,411 44,005 70.5 60,312 40,819 67.7 51,809 38,057 73.5
2016 All first primary cancers5 139,487 99,694 71.5 132,161 90,277 68.3 112,882 84,017 74.4
Breast 18,780 14,042 74.8 17,594 12,604 71.6 18,032 13,973 77.5
Colorectal 11,283 7,989 70.8 10,723 7,279 67.9 9,109 6,767 74.3
Lung 19,813 14,185 71.6 19,020 13,038 68.5 12,225 9,227 75.5
Prostate 19,238 13,104 68.1 17,934 11,582 64.6 18,470 13,154 71.2
Other 70,373 50,374 71.6 66,890 45,774 68.4 55,046 40,896 74.3
All other primary cancers6 62,620 45,320 72.4 60,560 42,264 69.8 52,269 39,044 74.7
2017 All first primary cancers5 134,270 97,497 72.6 126,933 89,004 70.1 109,412 82,396 75.3
Breast 18,151 13,731 75.6 16,995 12,425 73.1 17,436 13,599 78.0
Colorectal 10,660 7,699 72.2 10,168 7,065 69.5 8,675 6,543 75.4
Lung 18,955 13,726 72.4 18,093 12,708 70.2 11,966 9,068 75.8
Prostate 19,349 13,464 69.6 18,019 11,966 66.4 18,705 13,536 72.4
Other 67,155 48,877 72.8 63,658 44,840 70.4 52,630 39,650 75.3
All other primary cancers6 63,064 46,323 73.5 60,986 43,539 71.4 52,600 39,710 75.5
1: All included cancer patients were enrolled in Medicare Part A and Part B and not in HMO in the month of diagnosis.
2: Age 65+ at time of diagnosis.
3: Age 66+ at time of diagnosis.
4: Age 65+ at diagnosis and survived to at least the beginning of the calendar year after diagnosis.
5: Sequence number 00 or 01.
6: Sequence number is 02+.

Part D Claims Data for 2006 not available.

Number of SEER-Medicare Patients with Part D Enrollment by Diagnosis Year 2007-2017, Managed Care Only7
Diagnosis Year Cancer Site Cancer patients8 Enrolled in Part D during the calendar year of diagnosis Cancer patients9 Enrolled in Part D during the calendar year prior to diagnosis Cancer patients10 Enrolled in Part D during the calendar year after diagnosis
N N % N N % N N %
2007 All first primary cancers11 55,896 49,840 89.2 53,278 N/A N/A 44,620 40,213 90.1
Breast 7,129 6,430 90.2 6,690 N/A N/A 6,850 6,260 91.4
Colorectal 6,102 5,497 90.1 5,862 N/A N/A 5,031 4,566 90.8
Lung 8,006 7,164 89.5 7,703 N/A N/A 4,530 4,090 90.3
Prostate 10,648 9,456 88.8 9,960 N/A N/A 10,304 9,244 89.7
Other 24,011 21,293 88.7 23,063 N/A N/A 17,905 16,053 89.7
All other primary cancers12 18,232 16,104 88.3 17,639 N/A N/A 14,670 13,138 89.6
2008 All first primary cancers11 60,843 55,220 90.8 57,634 50,192 87.1 48,733 44,383 91.1
Breast 7,835 7,201 91.9 7,336 6,535 89.1 7,563 6,990 92.4
Colorectal 6,596 6,034 91.5 6,319 5,547 87.8 5,538 5,090 91.9
Lung 8,897 8,023 90.2 8,502 7,384 86.9 5,110 4,631 90.6
Prostate 10,376 9,391 90.5 9,626 8,243 85.6 10,040 9,086 90.5
Other 27,139 24,571 90.5 25,851 22,483 87.0 20,482 18,586 90.7
All other primary cancers12 20,586 18,498 89.9 19,881 17,085 85.9 16,731 15,095 90.2
2009 All first primary cancers11 65,487 59,613 91.0 62,268 55,265 88.8 52,610 47,851 91.0
Breast 8,743 8,040 92.0 8,169 7,407 90.7 8,422 7,767 92.2
Colorectal 6,577 6,026 91.6 6,316 5,627 89.1 5,467 5,030 92.0
Lung 9,470 8,609 90.9 9,079 8,041 88.6 5,521 5,028 91.1
Prostate 11,291 10,211 90.4 10,516 9,163 87.1 10,933 9,813 89.8
Other 29,406 26,727 90.9 28,188 25,027 88.8 22,267 20,213 90.8
All other primary cancers12 22,646 20,445 90.3 21,889 19,282 88.1 18,392 16,527 89.9
2010 All first primary cancers11 65,950 60,929 92.4 62,760 56,402 89.9 53,057 49,148 92.6
Breast 8,656 8,104 93.6 8,100 7,457 92.1 8,336 7,827 93.9
Colorectal 6,256 5,790 92.6 6,007 5,375 89.5 5,219 4,850 92.9
Lung 9,498 8,780 92.4 9,136 8,264 90.5 5,454 5,037 92.4
Prostate 11,152 10,192 91.4 10,404 9,216 88.6 10,817 9,893 91.5
Other 30,388 28,063 92.3 29,113 26,090 89.6 23,231 21,541 92.7
All other primary cancers12 23,365 21,417 91.7 22,642 20,130 88.9 19,111 17,566 91.9
2011 All first primary cancers11 67,808 62,644 92.4 64,418 58,379 90.6 55,298 52,048 94.1
Breast 9,347 8,739 93.5 8,734 8,101 92.8 9,015 8,596 95.4
Colorectal 6,277 5,859 93.3 6,019 5,489 91.2 5,279 4,989 94.5
Lung 9,359 8,687 92.8 9,019 8,221 91.2 5,612 5,309 94.6
Prostate 11,307 10,353 91.6 10,511 9,351 89.0 11,003 10,218 92.9
Other 31,518 29,006 92.0 30,135 27,217 90.3 24,389 22,936 94.0
All other primary cancers12 25,102 22,890 91.2 24,342 21,785 89.5 20,664 19,277 93.3
2012 All first primary cancers11 70,041 66,155 94.5 65,912 60,423 91.7 56,729 54,124 95.4
Breast 9,777 9,331 95.4 9,034 8,476 93.8 9,435 9,081 96.2
Colorectal 6,460 6,129 94.9 6,080 5,585 91.9 5,422 5,186 95.6
Lung 9,823 9,311 94.8 9,397 8,646 92.0 5,802 5,550 95.7
Prostate 10,160 9,496 93.5 9,300 8,378 90.1 9,801 9,308 95.0
Other 33,821 31,888 94.3 32,101 29,338 91.4 26,269 24,999 95.2
All other primary cancers12 26,496 24,788 93.6 25,452 23,074 90.7 21,713 20,580 94.8
2013 All first primary cancers11 74,945 71,873 95.9 70,669 66,493 94.1 60,528 58,326 96.4
Breast 10,656 10,299 96.6 9,916 9,498 95.8 10,306 9,999 97.0
Colorectal 6,637 6,382 96.2 6,345 5,947 93.7 5,562 5,365 96.5
Lung 10,860 10,434 96.1 10,385 9,763 94.0 6,424 6,195 96.4
Prostate 10,496 10,042 95.7 9,679 8,998 93.0 10,118 9,714 96.0
Other 36,296 34,716 95.6 34,344 32,287 94.0 28,118 27,053 96.2
All other primary cancers12 29,188 27,823 95.3 28,130 26,274 93.4 24,036 23,052 95.9
2014 All first primary cancers11 78,087 75,476 96.7 73,928 70,466 95.3 63,004 60,865 96.6
Breast 11,171 10,832 97.0 10,369 10,024 96.7 10,764 10,470 97.3
Colorectal 6,809 6,603 97.0 6,457 6,121 94.8 5,695 5,531 97.1
Lung 11,097 10,728 96.7 10,639 10,165 95.5 6,639 6,412 96.6
Prostate 10,004 9,631 96.3 9,325 8,780 94.2 9,585 9,218 96.2
Other 39,006 37,682 96.6 37,138 35,376 95.3 30,321 29,234 96.5
All other primary cancers12 30,646 29,489 96.2 29,572 28,019 94.7 25,346 24,391 96.
2015 All first primary cancers11 82,899 80,310 96.9 78,777 75,739 96.1 66,822 64,827 97.0
Breast 11,790 11,536 97.8 11,086 10,835 97.7 11,378 11,149 98.0
Colorectal 6,814 6,627 97.3 6,493 6,272 96.6 5,576 5,426 97.3
Lung 11,673 11,296 96.8 11,253 10,814 96.1 7,031 6,810 96.9
Prostate 11,147 10,759 96.5 10,436 9,881 94.7 10,693 10,321 96.5
Other 41,475 40,092 96.7 39,509 37,937 96.0 32,144 31,121 96.8
All other primary cancers12 32,308 31,181 96.5 31,302 30,011 95.9 26,797 25,929 96.8
2016 All first primary cancers11 85,030 82,651 97.2 80,931 78,039 96.4 68,785 66,754 97.0
Breast 12,051 11,789 97.8 11,356 11,103 97.8 11,657 11,400 97.8
Colorectal 7,079 6,913 97.7 6,758 6,535 96.7 5,865 5,707 97.3
Lung 11,841 11,501 97.1 11,432 11,009 96.3 7,284 7,046 96.7
Prostate 11,670 11,280 96.7 10,869 10,358 95.3 11,243 10,857 96.6
Other 42,389 41,168 97.1 40,516 39,034 96.3 32,736 31,744 97.0
All other primary cancers12 33,628 32,537 96.8 32,592 31,224 95.8 28,058 27,122 96.7
2017 All first primary cancers11 89,860 87,643 97.5 85,433 83,129 97.3 73,788 71,924 97.5
Breast 13,035 12,788 98.1 12,217 12,045 98.6 12,628 12,383 98.1
Colorectal 7,242 7,062 97.5 6,929 6,682 96.4 6,059 5,916 97.6
Lung 12,341 12,035 97.5 11,861 11,571 97.6 7,875 7,664 97.3
Prostate 13,001 12,640 97.2 12,196 11,787 96.6 12,534 12,172 97.1
Other 44,241 43,118 97.5 42,230 41,044 97.2 34,692 33,789 97.4
All other primary cancers12 36,931 35,898 97.2 35,788 34,613 96.7 30,765 29,859 97.1
7: All included cancer patients were enrolled in Medicare Part A and Part B and in HMO during the year of interest.
8: Age 65+ at time of diagnosis.
9: Age 66+ at time of diagnosis.
10: Age 65+ at diagnosis and survived to at least the beginning of the calendar year after diagnosis.
11: Sequence number 00 or 01.
12: Sequence number is 02+.

Part D Claims Data for 2006 not available.

Beneficiaries Included in the 5% Non-cancer Sample

The following tables list the number of persons appearing in the SEER-Medicare data from the 5% Non-cancer Medicare Beneficiary Sample who are enrolled in Medicare Part D as well as the total number of persons who were eligible to enroll from the sample. The tables were generated separately for patients not enrolled in Managed Care and for those enrolled in Managed Care only. The data are displayed by year, beginning in 2007.

Number of Medicare beneficiaries included in the SEER-Medicare 5% non-cancer sample by Part D enrollment status and calendar year13
Calendar Year Total Enrolled in Part D
N N %
2007 486,437 221,651 45.6%
2008 484,451 222,804 46.0%
2009 483,314 222,370 46.0%
2010 488,814 225,951 46.2%
2011 500,184 235,347 47.1%
2012 512,670 254,147 49.6%
2013 521,710 292,089 56.0%
2014 530,273 302,132 57.0%
2015 540,584 315,552 58.4%
2016 553,699 331,519 59.9%
2017 561,442 339,500 60.5%
2018 563,632 343,930 61.0%

13: To be included individuals had to be eligible for Medicare entitlement, had to be 65+ years during the calendar year, could not be enrolled in an HMO during the calendar year and could not be known to have a prior history of cancer; individuals were excluded if sumstat=2.

Number of Medicare beneficiaries included in the SEER-Medicare 5% non-cancer sample by Part D enrollment status and calendar year, Managed Care Only14
Calendar Year Total Enrolled in Part D
N N %
2007 151,149 136,845 90.5%
2008 166,179 152,349 91.7%
2009 179,605 165,244 92.0%
2010 188,930 176,053 93.2%
2011 200,279 186,770 93.3%
2012 216,357 205,370 94.9%
2013 235,511 226,857 96.3%
2014 255,816 248,257 97.0%
2015 275,189 267,356 97.2%
2016 292,095 284,854 97.5%
2017 316,887 309,895 97.8%
2018 344,993 337,906 97.9%

14: To be included individuals had to be eligible for Medicare entitlement, had to be 65+ years during the calendar year, had to be enrolled in an HMO during the calendar year and could not be known to have a prior history of cancer; individuals were excluded if sumstat=2.

Last Updated: 18 Feb, 2021