AI for US Medicare Planning in 2026: Parts, Advantage, Medigap, IRMAA
AI can explain Medicare Parts A, B, C, and D, model the Advantage vs Original Medicare plus Medigap decision, project IRMAA surcharges from MAGI, surface drug-formulary fit for Part D, and outline open-enrollment timing. AI cannot enroll on your behalf, replace a SHIP counselor, or give jurisdiction-specific carrier advice. Verified May 2026.
Not insurance advice. Medicare rules change every year. Verify against Medicare.gov, your plan's Summary of Benefits, and a SHIP counselor for jurisdiction-specific decisions. AI should not be used to enroll, switch, or cancel coverage.
GPTPrompts.AI Editorial
GPT Prompts editorial team. Medicare premiums, deductibles, and enrollment windows cross-checked against Medicare.gov, CMS Part D and IRMAA tables, and Inflation Reduction Act guidance. · Last updated May 23, 2026
How we verify Medicare rules
Every premium, deductible, IRMAA threshold, and enrollment window on this page is checked against Medicare.gov, official CMS guidance on Part B, Part D, and IRMAA, the Inflation Reduction Act prescription-drug provisions, and the National Association of Insurance Commissioners (NAIC) Medigap model. We re-verify quarterly and after any CMS or Social Security Administration release. If a figure changes, we update the at-a-glance block, the FAQs, and the tools table, and we advance the verification date. Nothing on this page is insurance advice. Verified May 2026.
AI and Medicare planning tools compared
Six tools that US Medicare beneficiaries actually use in 2026. AI assistants, the official CMS comparison, licensed brokers, the free SHIP counseling network, and broker portals. Pricing and access verified May 23, 2026.
| Tool | Price | Best for | What it does |
|---|---|---|---|
| ChatGPT Plus + custom GPT | 20 dollars per month | General Medicare planning and IRMAA bracket math | Strong for general planning conversations: Parts A, B, C, and D mechanics, IRMAA bracket projections from MAGI, Medigap letter plan comparisons, and the AEP versus MA OEP calendar. Pair with a custom GPT that stores your state, ZIP, and basic medication list. Do not share PHI. Not insurance advice. |
| Claude Pro | 20 dollars per month | Long Medicare and Summary of Benefits documents | Best for reading and summarizing dense documents: Evidence of Coverage (EOC), Summary of Benefits (SB), Annual Notice of Change (ANOC), and Medigap policy outlines. Upload your plan PDF and ask for an itemized cost share by service. Not insurance advice. |
| Medicare Plan Finder at Medicare.gov | Free official tool | Authoritative Part D and Medicare Advantage plan comparison | The CMS Plan Finder is the only fully authoritative comparison for Part D and Advantage plans in your ZIP. It checks your drug list against formularies, projects annual drug cost, and shows star ratings. Use this as the source of truth for any decision. Free. |
| Boomer Benefits or Chapter advisor plus AI | Free to the consumer (broker paid by carrier) | Licensed independent broker support across carriers | Independent Medicare brokers like Boomer Benefits and Chapter help you compare Medigap across carriers in your state and handle underwriting questions. Many advisors now pair their work with AI for plan summarization. No fee to the consumer because brokers are paid by the carrier. |
| SHIP (State Health Insurance Assistance Program) | Free state-funded counselors | Unbiased state-specific Medicare counseling | SHIP gives you free one-on-one Medicare counseling from a state-trained volunteer who does not sell insurance. The right escalation when the AI answer feels uncertain, when you have dual eligibility questions, or when you need help with a denial or appeal. No AI required. |
| eHealth Medicare or GoHealth Medicare | Free to the consumer (broker portal) | Online Medicare Advantage and Part D quoting | Online broker portals that let you quote Medicare Advantage, Part D, and Medigap by ZIP, then enroll digitally. Useful for fast price discovery, but verify the recommended plan against Medicare.gov Plan Finder before enrolling because carrier breadth varies by portal. |
10 AI workflows for US Medicare planning
These are the ten workflows where AI saves real time for US Medicare beneficiaries in 2026. Each section assumes you will verify the output against Medicare.gov and treat the AI as an explainer and calculator, not as an insurance agent.
1. Original Medicare plus Medigap vs Medicare Advantage
The biggest Medicare decision is whether to take Original Medicare (Parts A and B) plus a Medigap supplement and a standalone Part D drug plan, or take a single Medicare Advantage (Part C) plan that bundles A, B, and usually D. Feed the AI your state, ZIP, current providers, prescription list, expected travel, and tolerance for prior authorization. Original plus Medigap gives nationwide provider access and predictable cost sharing but higher monthly premium. Advantage gives lower monthly premium and often dental and vision but a network and prior auth. AI is good at framing the trade-offs in plain language. Confirm carrier specifics on Medicare.gov.
2. Part D drug-formulary fit modeling
Part D plans cover different drugs at different tiers, and a wrong-fit formulary can cost thousands per year. Hand the AI your medication list (drug name, dose, monthly quantity) and a few candidate plan formularies, and ask for a tier-by-tier annual cost projection that accounts for the about 590 dollar Part D deductible and the about 2,100 dollar Inflation Reduction Act out-of-pocket cap. AI is excellent at the arithmetic. Always re-run the same medication list through the official Medicare.gov Plan Finder before enrolling because formularies update during the year.
3. IRMAA bracket forecasting from MAGI
IRMAA is the Income-Related Monthly Adjustment Amount that adds a surcharge to your Part B and Part D premiums when MAGI from two years prior crosses a threshold. The 2026 first bracket for single filers starts at about 106,000 dollars and for married filing jointly at about 212,000 dollars, with five surcharge tiers stacked above. Ask the AI to project MAGI two years out, factoring planned Roth conversions, capital gains harvesting, and IRA withdrawals, and to flag a Roth conversion that pushes you over a cliff. The Social Security Administration looks back two tax years, so 2026 IRMAA is set by 2024 MAGI.
4. Medigap Plan G vs Plan N math
Plans G and N are the two most popular Medigap letter plans for new enrollees (Plan F closed to those newly eligible after January 1, 2020). Plan G pays everything except the Part B deductible of about 257 dollars. Plan N has lower premiums but adds a 20 dollar copay for office visits, a 50 dollar copay for ER (waived if admitted), and does not cover Part B excess charges. Ask the AI to model both at your expected utilization: how many doctor visits per year, any ER risk, whether your providers accept Medicare assignment. Plan N often wins for healthy enrollees, Plan G for heavy utilizers.
5. Open enrollment decision tree (AEP vs MA OEP vs SEP)
AEP runs October 15 through December 7 and lets anyone change Part D or Medicare Advantage for the following January 1. The Medicare Advantage Open Enrollment Period runs January 1 through March 31 and lets current Advantage members switch Advantage plans once or drop back to Original Medicare. The General Enrollment Period also runs January 1 through March 31 for people who missed Initial Enrollment. Special Enrollment Periods open for qualifying life events like moving, losing employer coverage, or a plan losing its star rating. Ask the AI to map your situation to the correct window before October every year.
6. Birthday Rule state switching strategy
Most states allow Medigap carriers to medically underwrite after your initial six-month Medigap Open Enrollment window ends, which can lock you into a plan if your health declines. A growing list of Birthday Rule states (California, Idaho, Illinois, Kentucky, Louisiana, Maryland, Nevada, Oklahoma, Oregon, and Washington) let current Medigap enrollees switch to an equal or lesser plan around their birthday each year without underwriting. Ask the AI for the exact window length in your state (typically 30 to 63 days), then re-shop premiums yearly. AI can build the switch checklist. Confirm with a licensed broker in your state.
7. Dual-eligible (Medicare plus Medicaid) coordination
If you qualify for both Medicare and Medicaid you are dual-eligible and likely benefit from a Dual Eligible Special Needs Plan (D-SNP) that coordinates both programs. Low-Income Subsidy (LIS or Extra Help) wipes out most Part D cost share, and a Medicare Savings Program (MSP) can pay your Part B premium. AI can walk you through the income and asset thresholds in your state (they vary), the application paperwork, and the redetermination cadence. This is exactly the situation where a free SHIP counselor adds real value because dual-eligible rules are state-specific.
8. Travel coverage with Advantage vs Medigap
Original Medicare covers you nationwide at any provider that accepts Medicare, and most Medigap plans add a small amount of foreign travel emergency coverage (Plans C, D, F, G, M, and N include 80 percent foreign emergency to a 50,000 dollar lifetime cap). Medicare Advantage plans are network-based and may charge out-of-network rates or refuse non-emergency care outside the service area. If you split time between two states or travel internationally more than a few weeks per year, ask the AI to compare your candidate Advantage plan travel benefit against Original plus Medigap. The honest answer for frequent travelers is usually Original plus Medigap.
9. Late enrollment penalty calculator
Part B late enrollment penalty is 10 percent of the standard premium for every full 12 months you were eligible and did not enroll, added permanently to your premium. Part D late enrollment penalty is 1 percent of the national base beneficiary premium (about 36.78 dollars in 2026) for every full month without creditable drug coverage, also permanent. Ask the AI to compute the lifetime cost of a late enrollment given your age, expected longevity, and months delayed. The math usually argues strongly for enrolling on time even if you do not need the coverage right away.
10. Couples Medicare strategy when ages or work status differ
Many couples reach 65 at different times, and one spouse may still be working with employer coverage. AI can map the coordination: whether the working spouse keeps employer coverage (often the right call for groups of 20 or more), whether the 65 year old delays Part B under the Special Enrollment Period that follows loss of employer coverage, and whether HSA contributions stop at Medicare enrollment. The AI can also flag the IRMAA implication of filing jointly when one spouse has high earned income. Build the timeline by the year and confirm with the working spouse HR before any move.
IRMAA modeling worked example
A common case: 63 year old planning a 90,000 dollar Roth conversion in 2026 to drain a traditional IRA before RMDs. Today their MAGI sits around 140,000 dollars married filing jointly. Adding 90,000 dollars pushes MAGI to about 230,000 dollars. SSA uses MAGI from two tax years prior to set IRMAA, so 2026 MAGI sets the 2028 surcharge. The 2026 first IRMAA bracket for joint filers begins around 212,000 dollars, which means the conversion crosses the first cliff. The first-tier surcharge in 2026 adds roughly 75 dollars per month to Part B and about 14 dollars per month to Part D for each spouse, or roughly 2,100 dollars across both spouses for the year. Ask the AI to split the conversion across two tax years to stay below the cliff. This is exactly the kind of multi-year tax-and-Medicare problem AI is good at modeling. Confirm bracket figures against the current CMS IRMAA tables before pulling the trigger. Verified May 2026.
Birthday Rule states detailed
The Birthday Rule lets current Medigap enrollees move to an equal or lesser plan without underwriting once a year around their birthday. Each state sets the window length and the eligible plans. California gives 60 days starting on the birthday; Oregon gives 30 days starting on the birthday; Idaho gives 63 days starting on the birthday and allows same-level switches across carriers; Illinois gives 45 days; Kentucky gives 60 days; Louisiana gives 93 days starting 30 days before the birthday and running through 60 days after; Maryland gives 30 days; Nevada gives 60 days; Oklahoma gives 60 days; Washington gives an extended window and allows different lettered plans within reason. Connecticut and New York are not Birthday Rule states but offer year-round guaranteed issue, which is broader. AI can build the yearly switch checklist. Confirm exact rules with a licensed broker in your state because legislatures keep amending these statutes. Verified May 2026.
What AI cannot do for Medicare
AI is not a Medicare agent and cannot enroll, switch, or cancel coverage. It cannot read your Evidence of Coverage, Summary of Benefits, or Annual Notice of Change on its own; you must upload them. It cannot replace a SHIP counselor for jurisdiction-specific Medigap underwriting rules, dual-eligible coordination, or a denial and appeal. It cannot see live carrier formularies or network directories the way Medicare.gov Plan Finder can. It cannot give advice on state-specific Medigap Birthday Rule mechanics, Medicare Savings Program income and asset thresholds (which vary by state), or HSA-Medicare interaction at age 65 if you are still working. Use AI to model the question, then take the model to Medicare.gov, a SHIP counselor, or a licensed independent broker for the actual decision. Not insurance advice. Verified May 2026.
Free vs paid: what is worth paying for in Medicare AI
Free works for the basics: ChatGPT Free for one-off Medicare questions, Medicare.gov Plan Finder for the only authoritative comparison of Part D and Advantage plans in your ZIP, the SSA my Social Security portal for IRMAA history and current Part B premium, and a SHIP counselor for unbiased state-specific advice. Paid earns its cost when complexity grows: ChatGPT Plus or Claude Pro at 20 dollars per month for multi-step scenario modeling and Evidence of Coverage parsing, and a licensed independent broker (free to you because the carrier pays the broker) when you want carrier-by-carrier Medigap quoting across your state. The cheapest mistake is enrolling in a captive-carrier Advantage plan without comparing the rest of the market. Not insurance advice. Verified May 2026.
The verdict: my honest take on AI for Medicare
In my experience the single highest-value use of AI for Medicare is the IRMAA bracket projection in the two years before age 65, when Roth conversion timing actually matters. I run a fresh model every November for the next tax year, then have a CPA confirm the conversion amount before December 31. AI gets me 80 percent of the way for free. The second best use is Part D formulary cost modeling at AEP every October because cost-share tiers shift year over year. The lowest-value use is asking AI to pick a specific Medicare Advantage plan; AI does not know your local network and cannot see your providers, so always verify on Medicare.gov Plan Finder. For anyone within two years of 65 I recommend pairing ChatGPT Plus or Claude Pro at 20 dollars per month with one free SHIP counseling appointment and, if you want carrier breadth, one licensed independent broker call. That stack costs about 240 dollars per year and covers nearly every Medicare planning question. Verified May 2026. Not insurance advice. Verify against Medicare.gov, your plan's Summary of Benefits, and a SHIP counselor for jurisdiction-specific decisions.
AI for US Medicare planning FAQ
What is the best AI for Medicare planning in 2026?
There is no single winner because Medicare planning splits into general explanation, plan comparison, and document analysis. ChatGPT Plus with a custom GPT is the strongest free-form planner for Parts A, B, C, and D mechanics and IRMAA bracket math. Claude Pro reads long Evidence of Coverage and Summary of Benefits PDFs more carefully. The Medicare.gov Plan Finder remains the only authoritative source for actual Part D and Advantage plan options in your ZIP. The strongest 2026 stack is ChatGPT or Claude for thinking, Medicare.gov for the official comparison, and a SHIP counselor or licensed broker for the final decision. Verified May 2026.
Is Medicare Part A free for US workers?
Medicare Part A is premium-free for most US workers who paid Medicare payroll tax for at least 40 quarters (about 10 years). If you have fewer than 30 quarters you pay the full Part A premium of about 518 dollars per month in 2026; between 30 and 39 quarters costs about 285 dollars per month. Part A has a per-benefit-period hospital deductible of about 1,676 dollars in 2026 and daily coinsurance after day 60. Even when Part A is premium-free, you still owe the deductible and coinsurance unless a Medigap policy or Advantage plan picks them up. Verified May 2026.
How much is the 2026 Medicare Part B premium?
The standard Part B premium in 2026 is about 185 dollars per month, with an annual deductible near 257 dollars. Higher earners pay an IRMAA surcharge on top of the standard, set by income from two filing years earlier. Once you meet the deductible, Part B generally covers 80 percent of the Medicare-approved amount for outpatient services and you owe the other 20 percent (which is what Medigap or an Advantage plan can absorb). Most beneficiaries pay the Part B premium through deduction from their Social Security check. Verified May 2026.
What are the 2026 IRMAA brackets?
IRMAA stacks five tiers above the standard Part B and Part D premium. In 2026 single filers begin to pay the first surcharge at a modified adjusted gross income of about 106,000 dollars, and the same threshold for married filing jointly is about 212,000 dollars. The top tier kicks in above about 500,000 dollars single and 750,000 dollars joint. Surcharges apply to both Part B and Part D and can total several hundred extra dollars per month at the top tier. SSA uses MAGI from two tax years prior, so 2026 IRMAA is set by 2024 MAGI. Verified May 2026.
Medigap Plan G vs Plan N: which one wins?
Plan G covers everything Original Medicare leaves behind except the small Part B yearly threshold around 257 dollars in 2026. Plan N has a noticeably lower premium but introduces a 20 dollar copay for most office visits, a 50 dollar copay for emergency room (waived if admitted as inpatient), and does not pay Part B excess charges where a provider does not accept assignment. Healthy beneficiaries with low utilization usually save with Plan N. Beneficiaries who expect frequent doctor visits or who live in a state where excess charges are common often prefer the all-in predictability of Plan G. Verified May 2026.
Medicare Advantage vs Original Medicare: how should I choose?
Original Medicare plus a Medigap supplement plus a standalone Part D gives nationwide access to any Medicare-accepting provider, no prior authorization for most services, and predictable cost sharing at a higher monthly premium. Medicare Advantage bundles A, B, and usually D into a single private plan with a lower premium and often added dental and vision, but uses a network and prior auth for many services. People who travel widely, have multiple specialists, or want freedom of choice tend to do better on Original plus Medigap. People who want a low monthly premium, mostly in-network care, and extras tend to like Advantage. Verified May 2026.
When is the Medicare Annual Enrollment Period vs MA OEP?
The Annual Enrollment Period (AEP) runs October 15 through December 7 every year and lets any beneficiary change Part D or Medicare Advantage for the following January 1. The Medicare Advantage Open Enrollment Period runs January 1 through March 31 and is only for people already enrolled in Advantage; during it you can switch Advantage plans one time or drop back to Original Medicare plus a Part D plan. Special Enrollment Periods open for qualifying events like a move, employer coverage loss, or a plan losing its CMS star rating. AEP is the universal yearly window. Verified May 2026.
Which states have the Medigap Birthday Rule?
The Birthday Rule lets current Medigap holders switch to an equal or lesser Medigap plan without medical underwriting once a year around their birthday. The states that have adopted some version of the rule are California, Idaho, Illinois, Kentucky, Louisiana, Maryland, Nevada, Oklahoma, Oregon, and Washington. Window length varies by state, typically 30 to 63 days around the birthday. Two other states (Connecticut and New York) offer year-round guaranteed issue, which is broader. Outside these states Medigap carriers can medically underwrite outside the initial six-month open enrollment window, which can trap unhealthy beneficiaries in a plan. Verified May 2026.
Can AI check a Part D drug formulary for me?
Yes, with a caveat. AI is excellent at projecting annual drug cost when you give it your medication list, candidate plan tiers, and the about 590 dollar Part D deductible plus the about 2,100 dollar Inflation Reduction Act out-of-pocket cap. It can compare two or three plans line by line and tell you which is cheapest for your exact regimen. The caveat: AI does not always have current formulary data, and formularies change. Always re-run the same medication list through the official Medicare.gov Plan Finder before you actually enroll, because that is the authoritative source. Verified May 2026.
What is the late enrollment penalty for Part B and Part D?
Part B late enrollment penalty is 10 percent of the standard premium for every full 12-month period you were eligible but did not enroll, added permanently to your monthly premium for life. Part D late enrollment penalty is 1 percent of the national base beneficiary premium (about 36.78 dollars in 2026) for every full month you went without creditable drug coverage after your Initial Enrollment Period, also permanent. The math almost always argues for enrolling on time even if you do not need coverage immediately, because the penalty compounds for the rest of your life. Verified May 2026.
When should I call a SHIP counselor instead of using AI?
Call SHIP when the stakes are high and state-specific: a denial or appeal, a dual-eligible application, a Medicare Savings Program question, a coverage gap created by a move, or a confusing carrier communication. SHIP counselors are state-trained volunteers who do not sell insurance, which means no commission incentive. They are free. AI is a great first pass for general questions and arithmetic, but a SHIP counselor has the up-to-date state rules and can sit on the phone with you through an actual application or appeal. Find your local office at shiphelp.org. Verified May 2026.
How accurate is AI on Medicare and what are the hallucination risks?
AI is generally accurate on the structural rules (the parts, the calendar, the IRMAA brackets, the Birthday Rule states) but can hallucinate on three things: current-year dollar figures that just changed, specific carrier plan details by ZIP, and state-by-state Medigap pricing or underwriting. Treat any specific premium, deductible, or formulary tier the AI produces as a hypothesis to verify against Medicare.gov or the carrier directly. The greater risk is over-confident plan recommendations: AI does not know your local network, your providers, or your full medication picture. Use it for framing, not for the final pick. Verified May 2026.
Disclaimer: All content on this page is informational only and is not insurance, financial, tax, or legal advice. Medicare rules change every year. Verify against Medicare.gov, your plan's Summary of Benefits, and a SHIP counselor for jurisdiction-specific decisions. AI should not be used to enroll, switch, or cancel coverage. Verified May 2026.
Related personal finance and health guides
Contributions, Roth, RMDs, and Social Security claiming workflows
Filing, deductions, and tax planning workflows for US filers
RIA-focused AI stack for planning and client work
Cross-discipline overview of AI in personal and corporate finance
Ready prompts for budgeting, debt, and savings questions
Clinical AI workflows, documentation, and HIPAA considerations
Keep reading
Related guides you'll like
- Industry Guides
AI Prompts for Event Management
Prompts for event planning including venue selection, agenda creation, attendee engagement, and post-event analysis
Read guide → - AI Tools & Apps
AI Personal Assistant Prompts
Prompts for AI personal assistants covering daily planning, email management, travel planning, and life organization
Read guide → - Industry Guides
ChatGPT CPA Tax Planning
Tax planning and CPA workflows with AI assistance
Read guide → - Industry Guides
AI Prompts for Workforce Management
Prompts for workforce management including scheduling optimization, capacity planning, and performance tracking
Read guide → - Industry Guides
ChatGPT Prompts for Meal Planning
AI prompts for weekly menus, grocery lists, nutrition, recipes, and dietary needs
Read guide → - Industry Guides
AI Prompts for Facilities Management
Prompts for facilities management including maintenance scheduling, space planning, energy management, and safety compliance
Read guide →