Does Humana Cover Januvia?
The verdict
Covered on most plans
Yes — Humana covers Januvia for type 2 diabetes across Medicare Part D and its other lines of business, typically as a Tier 3 preferred brand with low prior authorization requirements on Medicare. As a Part D sponsor, Humana must apply the IRA negotiated Maximum Fair Price of $113 per 30-day supply, effective January 1, 2026 — a 79% reduction from the prior list price of approximately $527, the largest percentage discount among the negotiated drugs. Generic sitagliptin (Sandoz, launched May 2026) provides an additional lower-cost option. The $2,100 annual Part D out-of-pocket cap is the safety net.
Coverage is set by your specific plan and formulary. This is a research summary — always confirm with Humana using your member ID.
Key facts
The 2026 IRA Maximum Fair Price for Januvia is $113 per 30-day supply — a 79% reduction from the prior list price of approximately $527, the largest percentage discount among all IRA Round 1 negotiated drugs.
CMS Medicare Drug Price Negotiation Program, 2026 MFP
Generic sitagliptin (Januvia's generic) launched May 2026 (Sandoz), bringing cash prices from approximately $700 for the brand down to approximately $110 with a coupon at retail pharmacies.
Sandoz press release, May 26, 2026; GoodRx pricing data
Humana is one of the largest Medicare Part D sponsors; CenterWell (Humana's mail-order pharmacy) typically offers lower cost-sharing for Part D enrollees than retail network pharmacies.
Humana plan benefit documents; CMS Part D sponsor data
Medicare vs. commercial coverage
Whether Humana covers Januvia depends heavily on which kind of plan you hold. They follow completely different rules — here's each one, side by side.
Medicare
Part D & Advantage plans
Januvia is covered on Humana's 2026 Medicare Part D plans, typically as a Tier 3 preferred brand. Prior authorization and step therapy are generally low on Medicare for Januvia — metformin-first requirements that are common on commercial and Medicaid plans are less prevalent on Medicare. As a Part D sponsor, Humana must apply the IRA negotiated Maximum Fair Price of $113 per 30-day supply, effective January 1, 2026 — a 79% reduction from the prior list price of approximately $527. This is the largest percentage discount of any drug in IRA Round 1 negotiations. The 2026 Part D structure includes a $2,100 annual out-of-pocket cap; once that cap is reached, Januvia is covered with no additional cost for the rest of the year. Note: the coinsurance-shift caveat applies — the MFP is a payer-side ceiling, and your actual cost depends on whether your specific Humana plan uses a fixed copay or coinsurance. Using CenterWell, Humana's preferred mail-order pharmacy, typically results in lower cost-sharing. LIS/Extra Help enrollees pay $0–$12.65 per month. Medicare beneficiaries cannot use the Merck $5 copay card. Note: do not confuse Januvia with Janumet (sitagliptin/metformin combination), which is a separate product with a different IRA timeline.
Commercial / Employer
Group & marketplace plans
Humana's commercial and ACA footprints are limited relative to its Medicare Part D operations. Where Humana commercial or ACA plans are offered, Januvia is covered for type 2 diabetes. Metformin-first step therapy is common for DPP-4 inhibitors on commercial plans; if step therapy applies, your prescriber should document prior metformin use at the maximum tolerated dose or a clinical contraindication. Humana Medicaid MCOs cover Januvia; metformin-first step therapy and prior authorization are common per state Preferred Drug Lists, with typical cost-share of $0–$10. Generic sitagliptin (launched May 2026) is available and may appear on a lower formulary tier than brand Januvia. Brand Januvia retails at approximately $696–$721, while generic sitagliptin is approximately $110 with a coupon (pharmacy-variable estimates). The Merck $5 copay card is available for commercially insured patients not enrolled in a government program; Medicare and Medicaid beneficiaries cannot use it.
The 3 boxes you must tick to get approved
Commercial plans that will consider Januvia require prior authorization. Check off what applies to you to see how close you are — this is a guide, not a guarantee of approval.
Meet all 3 and you have a documented case for approval. Missing any one is the most common reason requests are denied.
Your cost, three ways
What Januvia actually costs you swings enormously depending on how it's covered. Here's the realistic range.
Paying cash
Brand Januvia: approximately $696–$721 per 30-day supply at retail pharmacy (pharmacy-variable estimate). Generic sitagliptin: approximately $110 with a coupon (pharmacy-variable estimate — launched May 2026).
List price with no coverage — before any manufacturer savings card.
With coverage
Medicare Part D (Humana): IRA Maximum Fair Price $113 per 30-day supply effective January 1, 2026; typical Tier 3 cost-share; $2,100 annual out-of-pocket cap; LIS/Extra Help $0–$12.65 per month. Commercial: Merck $5 copay card (commercially insured only, not government-insured). Medicaid: $0–$10 typical. All figures are estimates — verify with your specific Humana plan.
Typical monthly copay once prior authorization is approved.
All dollar figures are estimates. Your actual cost depends on your specific Humana plan's tier structure, deductible status, and benefit phase. The MFP of $113 is a payer-side ceiling — your copay depends on whether your Humana plan uses a fixed copay or coinsurance. Using CenterWell mail-order typically results in lower cost-sharing for Humana Part D enrollees. Generic sitagliptin (launched May 2026) may significantly reduce costs compared to the brand tier. Medicare beneficiaries cannot use the Merck $5 copay card. Do not confuse Januvia with Janumet (combination product — separate IRA timeline).
Check YOUR exact coverage in 3 steps
General answers only get you so far. Here's how to confirm your own plan's decision in a few minutes.
- 1
Look up Januvia and generic sitagliptin on the Humana plan formulary tool
Visit Humana.com and use the drug pricing or formulary search for your 2026 plan. Search for both 'Januvia' and 'sitagliptin' to see if the generic is on a lower tier than the brand. Confirm any prior authorization or step-therapy requirements, your estimated cost-share, and whether your plan uses a fixed copay or coinsurance for Tier 3 drugs.
- 2
Ask your prescriber to document metformin history if on commercial or Medicaid
If you are on a Humana commercial or Medicaid plan, a metformin-first step-therapy requirement is common for DPP-4 inhibitors. Ask your prescriber to document prior metformin use (dose, duration, and reason for stopping or contraindication) with the prescription to satisfy the step-therapy requirement.
- 3
Fill through CenterWell or call Humana member services to confirm cost
CenterWell is Humana's preferred mail-order pharmacy and typically offers the lowest cost-sharing for Part D enrollees. Call the number on the back of your Humana ID card and ask: (1) Which tier is Januvia or generic sitagliptin on my plan? (2) Is prior authorization or step therapy required? (3) Has my annual deductible been met? Have your plan ID and drug dosage ready.
Options if Humana won't cover Januvia
A denial isn't the end of the road. These are the paths people commonly explore next — discuss any of them with your prescriber.
Generic sitagliptin
Generic sitagliptin (Januvia's generic) launched May 2026 (Sandoz) and is now available. Brand Januvia retails at approximately $696–$721, while generic sitagliptin is approximately $110 with a coupon. Generics are typically on a lower formulary tier, which can significantly reduce your cost-share. Discuss with your prescriber whether the generic is appropriate for you.
Jardiance (empagliflozin)
An SGLT2 inhibitor for T2D with additional heart failure and CKD benefits. No generic available. The 2026 IRA negotiated price is $197 per 30-day supply. Discuss with your prescriber whether an SGLT2 or DPP-4 inhibitor better fits your clinical profile.
Farxiga (dapagliflozin) or generic dapagliflozin
Another SGLT2 inhibitor for T2D, heart failure, and CKD. Generic dapagliflozin is available. The 2026 IRA negotiated price for Farxiga is $178.50 per 30-day supply. Discuss clinical appropriateness with your prescriber.
Metformin (generic)
First-line oral diabetes medication; Tier 1 at approximately $4 per month cash price. If step therapy requires metformin first, your prescriber will document this before approving Januvia.
These options are listed for information only — your own clinician decides what is appropriate for you.
❓Frequently Asked Questions
Yes — Humana covers Januvia for type 2 diabetes on its 2026 Medicare Part D plans and other lines, typically as a Tier 3 preferred brand. Prior authorization is generally low on Medicare. As a Part D sponsor, Humana must apply the IRA negotiated Maximum Fair Price of $113 per 30-day supply, effective January 1, 2026 — a 79% reduction. Generic sitagliptin launched in May 2026 as a lower-cost alternative. On commercial and Medicaid plans, a metformin-first step therapy is common.
CMS negotiated a Januvia Maximum Fair Price of $113 per 30-day supply, effective January 1, 2026 — a 79% reduction from the prior list price of approximately $527. This is the largest percentage discount of any IRA Round 1 negotiated drug. All Humana Part D plans must apply this price. Your actual copay depends on whether your plan uses a fixed copay or coinsurance; the $2,100 annual out-of-pocket cap limits total Medicare exposure.
Generic sitagliptin (Januvia's generic, launched May 2026 by Sandoz) should now be available on Humana formularies, potentially on a lower tier than brand Januvia. Brand Januvia retails at approximately $696–$721, while generic sitagliptin is approximately $110 with a coupon. Check your Humana plan's drug list for generic sitagliptin using the online formulary tool or by calling member services. Ask your prescriber whether switching to the generic is appropriate.
On Humana Medicare Part D, a metformin-first step therapy for Januvia is generally not expected — Medicare prior auth and step therapy for Januvia are low overall. On Humana commercial or Medicaid plans, metformin-first step therapy is common for DPP-4 inhibitors. If step therapy applies, your prescriber should document prior metformin use at the maximum tolerated dose or a clinical contraindication. Verify your specific plan on the Humana formulary.
Only if you have a Humana commercial plan — not Medicare or Medicaid. The Merck $5 copay card for Januvia is available for commercially insured patients not enrolled in any government health program. If you have Humana Medicare Part D, Medicare Advantage, or Humana Medicaid, you cannot use the savings card. Note that with generic sitagliptin now available at approximately $110 with a coupon, the generic may offer greater savings than the brand with the savings card — discuss with your prescriber.
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Read moreThis content is for informational purposes only and does not constitute medical, financial, or insurance advice. Coverage rules, prior-authorization criteria, and copay amounts change frequently and vary by plan, formulary tier, and effective date — always verify current benefits directly with Humana before making any decision. Consult a licensed healthcare provider and your plan administrator for guidance specific to your situation.