OpenBilldrug price receipt

NADAC week of 2026-10-14

HUMULIN N 100 UNIT/ML KWIKPEN

FDA nonproprietary name: insulin human

For 15 mL

Pharmacies pay

$135.50 filed

15 × $9.03325 per ML

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D paid

$101.16 filed

15 × $6.74415 per ML, Part D average

Medicare's price is not your price.

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18


The spread

0.75× estimated

Medicare paid 25% less than pharmacies pay.

Part D averages every strength and form sold under “Humulin N Kwikpen” / “Insulin NPh Human Isophane” into one figure, so it is not specific to this NDC.

OpenBill calculation · DSD_PTD_RY26_P04_V10_DY24_BGM.csv + nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17) · Part D 2024-01-01 to 2024-12-31 (file of 2026-06-25, retrieved 2026-10-18)

Cost-plus estimate

$160.83 estimated

$135.50 + $20.33 (15%) + $5.00 fee per fill = $160.83

This is a model, not a price any pharmacy quoted. Shipping is not included. How it is worked out

OpenBill calculation · nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17)

Open the interactive card Change the quantity, type what you were charged, and see every record in full.

What it is

HUMULIN N 100 UNIT/ML KWIKPEN is how the CMS NADAC file names this product. The FDA NDC Directory lists it as insulin human, under the trade name “Humulin N”.

FDA gives its dosage form as injection, suspension and its route as subcutaneous.

The labeler, the company named on the label, is Eli Lilly and Company.

FDA’s Established Pharmacologic Class for it is Insulin.

The NADAC file of 2026-10-14 prices it under one NDC (National Drug Code), 00002-8805-59.

NADAC classes it as a brand-name drug (rate-setting class B), and marks it as sold over the counter.

What pharmacies pay

Pharmacies pay $135.50 for 15 mL (15 × $9.03325 per ML, rounded to the cent), by the CMS NADAC file of 2026-10-14; that price took effect on 2026-09-23. That is what pharmacies pay their suppliers, not what they charge you.

NADAC’s explanation codes for it: 1, calculated from the most recently completed pharmacy survey; 5, calculated based on package size.

The NDC

Other strengths, forms and brands

11 other products in the NADAC file share the FDA nonproprietary name insulin human with HUMULIN N 100 UNIT/ML KWIKPEN.

ProductPharmacies pay per unitMedicare per unit
AFREZZA ((REGULAR INSULIN) 8 UNIT CARTRIDGE
brand · powder, metered
$10.3754 per EA filed
eff. 2026-09-23
$8.98197 per EA filed
Part D 2024 average
AFREZZA (REGULAR INSULIN) 4 UNIT CARTRIDGE
brand · powder, metered
$5.20552 per EA filed
eff. 2026-09-23
$8.98197 per EA filed
Part D 2024 average
AFREZZA (REGULAR INSULIN) 12 UNIT CARTRIDGE
brand · powder, metered
$15.65297 per EA filed
eff. 2026-05-20
$8.98197 per EA filed
Part D 2024 average
AFREZZA (REGULAR INSULIN) 60-4 UNIT/60-8 UNIT/60-12 UNIT
brand · kit
$10.33288 per EA filed
eff. 2026-09-23
$8.98197 per EA filed
Part D 2024 average
AFREZZA (REGULAR INSULIN) 90-4 UNIT / 90-8 UNIT
brand · kit
$7.78053 per EA filed
eff. 2026-09-23
$8.98197 per EA filed
Part D 2024 average
AFREZZA (REGULAR INSULIN) 90-8 UNIT / 90-12 UNIT
brand · kit
$13.03769 per EA filed
eff. 2026-04-01
$8.98197 per EA filed
Part D 2024 average
HUMULIN 70-30 VIAL
brand · injection, suspension
$4.25636 per ML filed
eff. 2026-09-23
We don’t know yet
HUMULIN 70/30 KWIKPEN
brand · injection, suspension
$9.0349 per ML filed
eff. 2026-09-23
We don’t know yet
HUMULIN N 100 UNIT/ML KWIKPEN this page
brand · injection, suspension
$9.03325 per ML filed
eff. 2026-09-23
$6.74415 per ML filed
Part D 2024 average
HUMULIN N 100 UNIT/ML VIAL
brand · injection, suspension
$4.26742 per ML filed
eff. 2026-09-23
$3.79166 per ML filed
Part D 2024 average
HUMULIN R 100 UNIT/ML VIAL
brand · injection, solution
$4.2629 per ML filed
eff. 2026-09-23
$4.00953 per ML filed
Part D 2024 average
HUMULIN R 500 UNIT/ML KWIKPEN
brand · injection, solution
$91.60736 per ML filed
eff. 2026-09-23
We don’t know yet

Part D is one average per brand and generic name, over every strength and form.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-04-01, 2026-05-20, 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18

Compared with its class

Its NADAC price is $9.03325 per ML filed.

Of the 11 other products in FDA’s Insulin class priced per ML, 2 have a higher middle NADAC price and 9 a lower one. The one in the middle is NOVOLIN 70-30 100 UNIT/ML VIAL, at $4.62659 per ML filed (eff. 2026-09-23).

Prices are compared per unit, whatever the strength or dose, and a class is not a list of substitutes.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

What Medicare paid

Medicare Part D paid $101.16 for 15 mL, at an average of $6.74415 per ML in 2024 (2024-01-01 to 2024-12-31) for “Humulin N Kwikpen” and “Insulin NPh Human Isophane”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).

That average covers 162,921 Part D claims (fills, including refills) for 2024-01-01 to 2024-12-31, across every maker, strength and form under the name.

Medicare's price is not your price.

What to ask at the counter

None of these figures is your price: what you pay depends on your pharmacy, your insurance, coupons and discounts.

Questions

Why is the comparison with Medicare for HUMULIN N 100 UNIT/ML KWIKPEN labelled estimated?
Beyond what the card shows, the records give these reasons: The Part D figure covers 2024-01-01 to 2024-12-31; the NADAC price is from the file of 2026-10-14. Part D spending basis, as the Part D record states it: Part D 2024 average spend per dosage unit for Humulin N Kwikpen / Insulin NPh Human Isophane: all makers, strengths, forms and routes combined, claim-weighted; gross cost incl. dispensing fees and patient pay, before rebates. Unit taken as NADAC's ML. Joined on brand name.
Why does this page start at 15 mL?
NADAC prices this product per ML. The FDA NDC Directory’s package description gives 15 mL in one package for this product’s NDC (“5 SYRINGE in 1 CARTON (0002-8805-59) / 3 mL in 1 SYRINGE (0002-8805-01)”), so the card starts at one package: 15 ML. Change it to match your prescription.