DrugDashboards

Aranesp

darbepoetin alfa · DARBEPOETIN ALFA 25 ug/.42mL · Injection, Solution · Intravenous; Subcutaneous · Amgen, Inc

NDC 55513-0057-04 · 1 BLISTER PACK in 1 PACKAGE / 4 SYRINGE in 1 BLISTER PACK / .42 mL in 1 SYRINGE · BLA · View full market →

The short version

Only one company currently supplies this market — there is no backup if it stumbles. The price has held steady around $447.05 per mL over the past year. Put together: worth watching — several of the pressures that precede supply trouble are present at once.

The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.

One drug, every price

The same NDC has different prices depending on who is paying. Units differ between rungs — compare within a rung over time, not rung against rung, unless the units match.

ⓘ How this was built
Data sources
  • CMS NADAC (pharmacy acquisition, weekly)
  • CMS Part B ASP quarterly payment limits
  • CMS Maximum Fair Prices (IRA negotiated, NDC-level)
  • Medicare Part D Spending by Drug (data.cms.gov, name-matched)
  • VA FSS / Big4 federal contract prices (va.gov, twice monthly)
  • ACA Federal Upper Limits + weighted AMP (data.medicaid.gov, monthly)
  • California SB-17 WAC filings (list price, per package)
Method

Each rung is the newest figure for this NDC from one federal price system, shown with its own unit. Part D is matched by drug name because CMS publishes no NDCs there; it is gross spending, before confidential rebates.

Pipeline and calculations built by Claude (Fable 5) from the public datasets above. Educational only — verify against primary sources before acting.

  • Pharmacies pay (NADAC)$447.05per MLinvoice-surveyed acquisition cost · Aug 19, 2026
  • Medicare Part B pays (ASP+6%)$2.92per billing unit (1 MCG)HCPCS J0881 · Jul 1, 2026
  • Part D plans paid (avg)$2,556.45per dosage unitgross, before rebates — matched by drug name · 2024
  • Part D point of sale (median)$461.64per unitnegotiated price across 1,362 plans — before rebates · Apr 1, 2026

Medicare Part D

All Part D pricing →
ⓘ How this was built
Data sources
  • CMS quarterly Prescription Drug Plan Formulary & Pricing files (SPUF)
Method

Negotiated 30-day point-of-sale unit prices and formulary terms aggregated across every unsuppressed Part D and MA-PD plan for the quarter shown. Point of sale means gross of confidential rebates. CMS publishes one representative NDC per drug concept (RxCUI) rather than every package, so these figures come from CMS's representative package for the same drug — matched on generic name, strength, and dosage form. Estimated from MedPAC's program-wide rebate aggregates (June 2023: DIR = 29% of gross Part D spending; brand rebates ≈ 25–40% of gross, generics minimal). Actual rebates are confidential and vary widely by drug — this is a range, not a fact about this drug.

Pipeline and calculations built by Claude (Fable 5) from the public datasets above. Educational only — verify against primary sources before acting.

Plans pay at point of sale
$461.64per unit
middle half $454.65$480.65 · 1,362 plans · Apr 1, 2026
Est. net of rebates
$276.98–$346.23
brand drug — est. 25-40% rebate off the price at left
Coverage & restrictions
25%of plans cover it
tier 4 · prior auth 100% · step therapy 0% · qty limit 0%

*No drug-level rebate is public — the estimate applies MedPAC's program-wide brand rebate range to this drug's gross price. Tracked here for 10 quarters since 2024.

NADAC price per unit

$0$200.00$400.00$600.00Apr 2024Sep 2026$447.05
28 price points · per MLSource: CMS NADAC

Estimated fill cost

WAC per package, as filed
$774.00
Reported to Texas DSHS · 2026 annual filing · Amgen Usa Inc

Manufacturer list price as filed — not what pharmacies actually pay after discounts.

Medicare Part B (ASP)

Payment limit per 1 MCG
$2.920
HCPCS J0881 · Jul 1, 2026 quarter · typically ASP + 6%

Medicaid spend (2025)

$1.2M
7,666 prescriptions paid by Medicaid nationally · all Medicaid spend →

Supply fragility

40Elevated risk

The score is counting real pressure here. One of these alone is routine; it’s the combination that makes this market worth watching.

  • 1 active manufacturer+30
  • sterile injectable+10

The score counts pressure that is already visible — fewer makers, shortages, recalls, falling prices. 0 means none of it; 100 means all of it at once. Recomputed daily · as of Sep 3, 2026

90-day shortage risk (model v2)

0.1%chance of a new FDA shortage posting for darbepoetin alfa (injectable) in the next 90 days

sterile injectable · price up 1% YoY

For scale: the typical drug’s chance is about 0.1% — this one is in ordinary territory.

Backtested statistical model over the whole market, not this package alone. Model details →

Is this a "specialty" drug?

There's no legal definition — it meets 3 of 6 public criteria. Why that matters →

  • Part D specialty tier · median tier 4 across plans
  • Costs ≥ $950/fill · avg $2,315.83 per prescription
  • Biologic (BLA)
  • Injectable / infused
  • Orphan-drug exclusivity
  • REMS program

Regulatory

Application
BLA103951
TE code
Approval date
Patents / exclusivity
None on file

Shortage history

No FDA shortage reports for this drug or its presentations.

Recalls (this NDC)

No enforcement reports list this package NDC.

Manufacturers of darbepoetin alfa (Injection, Solution)

LabelerStrengthFirst seenLast seen
Amgen, IncDARBEPOETIN ALFA 10 ug/.4mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 100 ug/.5mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 150 ug/.3mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 200 ug/.4mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 25 ug/.42mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 300 ug/.6mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 40 ug/.4mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 500 ug/mLJul 15, 2026Sep 2, 2026
Amgen, IncDARBEPOETIN ALFA 60 ug/.3mLJul 15, 2026Sep 2, 2026

Roster from daily NDC Directory diffs — first/last seen dates start July 2026.

Cite this page

DrugDashboards, "Aranesp — NDC 55513-0057-04," retrieved September 3, 2026, https://drugdashboards.com/drug/55513005704.

Free to cite with attribution — see how the data is put together.