| Blue Cross of Idaho | Blue Cross of Idaho | Blue Cross of Idaho | Ada, Bannock, Bingham, Boise, Bonner, Bonneville, Boundary, Canyon, Cassia, Clark, Elmore, Fremont, Gem, Jefferson, Kootenai, Madison, Minidoka, Nez Perce, Owyhee, Payette, Power, Twin Falls Counties | not reported | not reported | not reported | not reported | 2019: 5,092 |
| Blue Cross of Idaho | Blue Cross of Idaho | Blue Cross of Idaho | Ada, Bannock, Bingham, Boise, Bonner, Bonneville, Boundary, Canyon, Cassia, Clark, Elmore, Fremont, Gem, Jefferson, Kootenai, Madison, Minidoka, Nez Perce, Owyhee, Payette, Power, and Twin Falls Counties | not reported | not reported | not reported | not reported | 2020: 6,265 |
| Blue Cross of Idaho | Blue Cross of Idaho | Blue Cross of Idaho | Ada, Bannock, Bingham, Boise, Bonner, Bonneville, Boundary, Canyon, Cassia, Clark, Elmore, Fremont, Gem, Jefferson, Kootenai, Madison, Minidoka, Nez Perce, Owyhee, Payette, Power, and Twin Falls counties | not reported | not reported | not reported | not reported | 2021: 6,989 |
| Blue Cross of Idaho | Blue Cross of Idaho | Blue Cross of Idaho | Counties: Ada, Adams, Bannock, Benewah, Bingham, Blaine, Boise, Bonner, Bonneville, Boundary, Cassia, Canyon, Clark , Clearwater, Elmore, Fremont, Gem, Gooding, Idaho, Jefferson, Jerome, Kootenai, Latah, Lemhi, Lewis, Lincoln, Madison, Minidoka, Nez Perce, Owyhee, Payette, Power, Shoshone, Twin Falls, Washington, Valley | not reported | not reported | not reported | not reported | 2023: 7,771 |
| Blue Cross of Idaho | Blue Cross of Idaho | Blue Cross of Idaho | Counties: Ada, Adams, Bannock, Benewah, Bingham, Blaine, Boise, Bonner, Bonneville, Boundary, Cassia, Canyon, Clark, Clearwater, Elmore, Fremont, Gem, Gooding, Idaho, Jefferson, Jerome, Kootenai, Latah, Lemhi, Lewis, Lincoln, Madison, Minidoka, Nez Perce, Owyhee, Payette, Power, Shoshone, Twin Falls, Washington, Valley | CMS reported 7,681 (2024) | 59.7% | not reported | not reported | 2024: 7,681 |