Medicare drug coverage
Humulin R in California: 2027 Part D coverage
374 of 397 Part D plans offered in California (94%) list Humulin R on their 2027 formulary, the plan's list of covered drugs (up 1 point from 2026). 25% of those require prior authorization, step therapy, or a quantity limit. Plan counts include both Medicare Advantage plans with drug coverage (387 MA-PD) and stand-alone drug plans (10 PDP).
License: a US government work, in the public domain (Public Domain Mark 1.0).
For pharmacies and agencies: check a whole drug list against 2027 formularies.
Upload your patient list or your book of clients and Rivvi checks each drug against the CMS 2027 formulary files, plan by plan, so you see tier changes and new limits before the next refill or open enrollment. Free to start. HIPAA BAA included.
Every 2027 plan in California
Each Part D plan offered in California, with Humulin R's 2026 and 2027 tier and its 2027 limits. A tier is the cost level a plan puts a drug on; a lower tier usually costs less. Enter a ZIP to see only the plans offered in that county.
PA is prior authorization (the plan must approve it first), ST is step therapy (try another drug first), and QL is a quantity limit. D-SNP, C-SNP, and I-SNP are Special Needs Plans: for people with both Medicare and Medicaid, with certain chronic conditions, or who live in a nursing home or need that level of care. Plans are listed by plan ID.
| Plan | Plan ID | Type | 2026 tier | 2027 tier | 2027 PA / ST / QL | Change |
|---|---|---|---|---|---|---|
| AARP Medicare Advantage from UHC CA-0024 (PPO) | H0294-032-000 | MA-PD (PPO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus (HMO) | H0504-015-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus (HMO) | H0504-017-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus Plan 2 (HMO) | H0504-021-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus (HMO) | H0504-026-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus (HMO) | H0504-028-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus (HMO) | H0504-038-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus (HMO) | H0504-039-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield 65 Plus Choice Plan (HMO) | H0504-040-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield Inspire (HMO) | H0504-041-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield Inspire (HMO) | H0504-043-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield Inspire (HMO) | H0504-047-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield Advantage (HMO) | H0504-050-000 | MA-PD (HMO) | Tier 3 | Tier 3 | None | No change |
| Blue Shield Advantage (HMO) | H0504-053-000 | MA-PD (HMO) | New plan ID | Tier 3 | None | New plan ID in 2027 |
| Blue Shield Advantage (HMO) | H0504-054-000 | MA-PD (HMO) | New plan ID | Tier 3 | None | New plan ID in 2027 |
| Blue Shield Advantage (HMO) | H0504-055-000 | MA-PD (HMO) | New plan ID | Tier 3 | None | New plan ID in 2027 |
| Blue Shield Value Advantage Plan (HMO) | H0504-056-000 | MA-PD (HMO) | New plan ID | Tier 3 | None | New plan ID in 2027 |
| Blue Shield Value Advantage Plan (HMO) | H0504-057-000 | MA-PD (HMO) | New plan ID | Tier 3 | None | New plan ID in 2027 |
| Aetna Medicare Signature Legacy (HMO) | H0523-022-000 | MA-PD (HMO) | Tier 5 | Tier 5 | None | No change |
| Aetna Medicare Signature (HMO) | H0523-065-000 | MA-PD (HMO) | Tier 5 | Tier 5 | None | No change |
| Aetna Medicare Signature Extra (HMO) | H0523-070-000 | MA-PD (HMO) | Tier 5 | Tier 5 | None | No change |
| Aetna Medicare Prime (HMO) | H0523-073-000 | MA-PD (HMO) | Tier 5 | Tier 5 | None | No change |
| Aetna Medicare Value Plus (HMO) | H0523-074-000 | MA-PD (HMO) | Tier 5 | Tier 5 | None | No change |
| Aetna Medicare Prime (HMO) | H0523-075-000 | MA-PD (HMO) | Tier 5 | Tier 5 | None | No change |
| Aetna Medicare Signature (HMO) | H0523-083-000 | MA-PD (HMO) | Tier 5 | Tier 5 | None | No change |
Data only, not plan advice. Confirm on Medicare.gov Plan Finder or 1-800-MEDICARE.
By dosage form
The 2027 formularies list Humulin R by dosage form. A plan can cover one form and leave off or restrict another, so each form is counted on its own.
| Dosage form | Plans that list it | Restricted (of listing) | Most common tier |
|---|---|---|---|
| Injectable solution | 293 (74%) | 95 (32%) | Tier 3 |
| Pen injector | 358 (90%) | 94 (26%) | Tier 3 |
California compared with the nation
30% of the 397 Part D plans offered in California leave Humulin R off the 2027 formulary or restrict it, against 15% nationally (15 points higher). California ranks 1 of 51 states from most to least restrictive. A plan offered in several states counts in each.
2027 compared with 2026
| Measure | 2026 | 2027 | Change |
|---|---|---|---|
| Part D plans in the file | 406 | 397 | -9 |
| Plans that list it | 377 (93%) | 374 (94%) | +1 point |
| Prior authorization (of plans that list it) | 0 (0%) | 0 (0%) | no change |
| Step therapy (of plans that list it) | 0 (0%) | 0 (0%) | no change |
| Quantity limit (of plans that list it) | 83 (22%) | 95 (25%) | +3 points |
| Any of the three (of plans that list it) | 83 (22%) | 95 (25%) | +3 points |
| Not listed or restricted (of all plans) | 112 (28%) | 118 (30%) | +2 points |
Formulary tier
| Tier | 2026 plans | 2027 plans |
|---|---|---|
| Tier 1 | 43 (11%) | 50 (13%) |
| Tier 2 | 52 (14%) | 18 (5%) |
| Tier 3 | 175 (46%) | 210 (56%) |
| Tier 5 | 92 (24%) | 81 (22%) |
| Tier 6 | 15 (4%) | 15 (4%) |
Plan by plan, 2026 to 2027
| Plan by plan | Plans |
|---|---|
| Same plan ID in both years | 331 |
| Listed it in 2026, not in 2027 | 0 (0%) |
| Listed it in 2027, not in 2026 | 0 (0%) |
| Moved it to a higher tier | 62 (19%) |
| Moved it to a lower tier | 15 (5%) |
| Added prior authorization | 0 (0%) |
| Added step therapy | 0 (0%) |
| Added a quantity limit | 2 (1%) |
| Added at least one of the three | 2 (1%) |
| Removed at least one of the three | 0 (0%) |
| Plan IDs new in 2027 | 66 |
| 2026 plan IDs not in the 2027 file | 75 |
The CMS summary has no count of tier moves down, so "Moved it to a lower tier" is counted from the plan rows on this page: plans with the same plan ID in both years that list Humulin R both years.
Humulin R in other states
- Alabama4% restrict or leave off, -2 pointsAL
- Alaska0% restrict or leave off, no changeAK
- Arizona11% restrict or leave off, +1 pointAZ
- Arkansas6% restrict or leave off, +4 pointsAR
- Colorado5% restrict or leave off, +1 pointCO
- Connecticut11% restrict or leave off, -2 pointsCT
- Delaware5% restrict or leave off, no changeDE
- District of Columbia0% restrict or leave off, no changeDC
- Florida26% restrict or leave off, -5 pointsFL
- Georgia4% restrict or leave off, -2 pointsGA
- Hawaii0% restrict or leave off, no changeHI
- Idaho24% restrict or leave off, +12 pointsID
- Illinois2% restrict or leave off, -7 pointsIL
- Indiana20% restrict or leave off, +4 pointsIN
- Iowa3% restrict or leave off, -2 pointsIA
- Kansas10% restrict or leave off, +1 pointKS
- Kentucky14% restrict or leave off, +4 pointsKY
- Louisiana2% restrict or leave off, -1 pointLA
- Maine10% restrict or leave off, +3 pointsME
- Maryland0% restrict or leave off, -14 pointsMD
- Massachusetts7% restrict or leave off, -1 pointMA
- Michigan8% restrict or leave off, no changeMI
- Minnesota21% restrict or leave off, -2 pointsMN
- Mississippi4% restrict or leave off, +1 pointMS
- Missouri5% restrict or leave off, -1 pointMO
- Montana11% restrict or leave off, -6 pointsMT
- Nebraska8% restrict or leave off, -3 pointsNE
- Nevada25% restrict or leave off, +1 pointNV
- New Hampshire0% restrict or leave off, no changeNH
- New Jersey9% restrict or leave off, -16 pointsNJ
- New Mexico9% restrict or leave off, -15 pointsNM
- New York14% restrict or leave off, -2 pointsNY
- North Carolina6% restrict or leave off, -7 pointsNC
- North Dakota4% restrict or leave off, +1 pointND
- Ohio13% restrict or leave off, no changeOH
- Oklahoma7% restrict or leave off, -11 pointsOK
- Oregon22% restrict or leave off, -1 pointOR
- Pennsylvania25% restrict or leave off, +1 pointPA
- Rhode Island17% restrict or leave off, +1 pointRI
- South Carolina0% restrict or leave off, -1 pointSC
- South Dakota3% restrict or leave off, no changeSD
- Tennessee22% restrict or leave off, -2 pointsTN
- Texas17% restrict or leave off, -3 pointsTX
- Utah4% restrict or leave off, +1 pointUT
- Vermont0% restrict or leave off, no changeVT
- Virginia10% restrict or leave off, -1 pointVA
- Washington7% restrict or leave off, no changeWA
- West Virginia6% restrict or leave off, -1 pointWV
- Wisconsin5% restrict or leave off, -9 pointsWI
- Wyoming8% restrict or leave off, +3 pointsWY
About this data
A plan here is one Part D plan as the CMS formulary files list it: contract, plan, and segment. That covers Medicare Advantage plans with drug coverage and stand-alone drug plans. A plan lists a drug when its formulary has a row for any RxNorm product of that name. When it has several, the row with the lowest tier is the one counted, and restricted means that row has prior authorization, step therapy, or a quantity limit.
A plan with no row for the drug counts as not listing it. That can be a product the file codes another way, so read a low count as a lookup result, not a coverage decision. A state counts every plan the CMS landscape file offers there. Parent organizations are named as CMS names them. The drug list is the top 200 by total Part D spending.
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
Source: CMS 2026 Part D formulary file (basic drugs and plan information), as of September 30, 2026. Publisher page
Source: CMS CY2027 landscape file (states and parent organizations), as of September 30, 2026. Publisher page
Source: CMS CY2026 landscape file, as of September 25, 2025. Publisher page
Source: CMS Medicare Part D Spending by Drug, 2024 data, as of June 25, 2026. Publisher page
Source: US Census Bureau 2020 ZCTA to county relationship file (ZIP lookup), as of December 9, 2021. Publisher page