Medicare’s Four Biggest Coverage Gaps — and How Treasure Coast Retirees Plan Around Them

Most people spend decades building wealth, only to discover that medicare coverage gaps represent one of the most significant — and most overlooked — financial risks in retirement. If you’ve recently moved to Stuart, Port St. Lucie, or anywhere along Florida’s Treasure Coast, or if you’re approaching Medicare eligibility with a sizeable nest egg, this is not an abstract concern.

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The reality is stark: Medicare covers roughly 80% of approved medical costs — which sounds reassuring until you realize that the remaining 20% has no annual cap in traditional Medicare. For a retiree with a $3M portfolio, an extended illness or long-term care event can quietly drain assets that took a lifetime to accumulate.

This guide walks through the four biggest medicare coverage gaps, explains why they matter more for high-net-worth individuals, and outlines the planning strategies that sophisticated Treasure Coast retirees are using to protect their wealth.

Why Medicare Coverage Gaps Hit High-Net-Worth Retirees Differently

The Mass-Market vs. HNW Medicare Problem

Most mass-market financial advice treats Medicare as a checkbox: sign up at 65, choose a Medigap plan, move on. For a retiree living on Social Security and a modest IRA, that framework works reasonably well.

But for a Treasure Coast retiree with $1.5M to $8M in investable assets, the stakes — and the strategies — are fundamentally different. Consider the key distinctions:

• IRMAA surcharges: Retirees with higher income pay significantly more for Medicare Parts B and D. In 2026, a married couple with modified adjusted gross income (MAGI) above $212,000 pays surcharges that can add thousands of dollars per year to their Medicare costs.
• Long-term care exposure: Medicare covers almost none of it. A retiree with $4M in assets may self-insure — but only if they’ve planned for it.
• Investment income triggers: Roth conversions, capital gains realizations, and required minimum distributions (RMDs) can all inadvertently push income into higher IRMAA brackets two years later.
• Estate planning implications: How you pay for healthcare gaps can meaningfully affect wealth transfer strategies.

In short, medicare coverage gaps aren’t just a healthcare problem for high-net-worth retirees — they’re a wealth management problem.

A Quick Comparison: Standard Medicare vs. What HNW Retirees Actually Need

Coverage Area	What Medicare Covers	What It Leaves Out	HNW Planning Response
Hospital stays (Part A)	First 60 days (after deductible)	$1,632 deductible per benefit period; unlimited coinsurance after day 90	Medigap Plan G or Plan N
Outpatient/doctor (Part B)	80% of approved costs	20% with no annual cap	Medigap + IRMAA income planning
Long-term care	Skilled nursing (limited)	Custodial care: virtually none covered	LTC insurance, hybrid policies, or dedicated reserves
Dental, vision, hearing	Almost nothing	Full cost of routine and complex procedures	Standalone plans or self-insuring
Prescription drugs (Part D)	Formulary-covered medications	Non-formulary drugs; IRMAA surcharges for higher earners	Plan selection + income smoothing strategies

Gap #1: The Unlimited Cost-Sharing Exposure in Parts A and B

Understanding the Medicare Coverage Gap in Cost-Sharing

Traditional Medicare (Parts A and B) was never designed to be comprehensive coverage. Part A carries a per-benefit-period hospital deductible of $1,632 in 2026 — and unlike most private insurance, there’s no single annual deductible reset. If you’re hospitalized multiple times in a year across different benefit periods, you pay that deductible each time.

More dangerous is Part B’s structure: you pay 20% of all approved costs with no out-of-pocket maximum. For a retiree undergoing cancer treatment, cardiac surgery, or an extended rehabilitation stay, that 20% can translate to $50,000, $100,000, or more in a single year.

How Treasure Coast Retirees Close This Medicare Coverage Gap

The most common and effective solution is a Medicare Supplement (Medigap) policy. Plan G is the most comprehensive option available to new Medicare enrollees in 2026, covering virtually all cost-sharing after you pay the Part B deductible ($257 in 2026).

Key considerations for HNW retirees choosing a Medigap plan:

• Plan G vs. Plan N: Plan N has lower premiums but retains copays for some office visits and Part B excess charges. For retirees with complex health needs, Plan G typically wins on total cost.
• Guaranteed issue windows: You have a six-month window from Part B enrollment to choose any Medigap plan without medical underwriting. Missing this window can mean denial or significantly higher premiums.
• Florida-specific pricing: Florida uses an attained-age rating model, meaning premiums increase as you age. Locking in coverage early and choosing a financially stable carrier matters.

Consult a qualified insurance and financial professional to evaluate which Medigap plan structure best fits your health history and financial situation.

Gap #2: The Long-Term Care Crisis Medicare Ignores

The Largest Medicare Coverage Gap Most Retirees Underestimate

This is arguably the most dangerous medicare coverage gap for high-net-worth families: Medicare pays for almost no long-term custodial care. Skilled nursing facility coverage is limited to 100 days (and only if preceded by a qualifying hospital stay). After that, you’re entirely on your own.

The financial exposure is enormous. According to Kiplinger’s long-term care research, the average cost of a private room in a Florida nursing facility exceeds $100,000 annually — and memory care facilities routinely run $120,000 to $150,000 per year. A couple where both spouses need care for multiple years faces potential costs exceeding $500,000 to $1M.

Planning Strategies for High-Net-Worth Retirees

HNW retirees generally have three viable approaches to this medicare coverage gap:

1. Traditional long-term care insurance: Premiums have risen sharply in recent years, but coverage remains available. Best suited for retirees who want to protect a specific pool of assets or a family home.
2. Hybrid life/LTC policies: These combine permanent life insurance with long-term care riders. If you don’t need care, the death benefit passes to heirs. For retirees with $500K+ in low-yielding CDs or cash, repositioning those funds into a hybrid policy can be highly efficient.
3. Dedicated self-insurance: Retirees with $5M+ in investable assets may choose to self-insure — setting aside a dedicated investment pool (often $500K to $1M) specifically earmarked for care costs. This requires disciplined separation from your general portfolio and a clear spending plan.

In my experience working with clients on the Treasure Coast, the most common regret is waiting too long to address long-term care. Insurance becomes harder to qualify for and more expensive with each passing year. The optimal time to plan is in your late 50s to early 60s, well before Medicare eligibility.

Gap #3: The IRMAA Trap — When Medicare Costs More Than You Expected

How Income Triggers This Hidden Medicare Coverage Gap

IRMAA — the Income-Related Monthly Adjustment Amount — is Medicare’s way of charging higher earners more for Parts B and D. It’s not technically a coverage gap, but it represents a significant and often surprising cost gap between what average retirees pay and what high-income retirees actually pay.

In 2026, a married couple filing jointly with MAGI above $212,000 will pay IRMAA surcharges on top of their standard Part B and D premiums. At the highest income tier (MAGI above $750,000 for married filers), the combined annual surcharge can exceed $10,000 per year for a couple.

What makes this particularly tricky is the two-year lookback: Medicare uses your 2024 tax return to set 2026 premiums. A large Roth conversion, a business sale, or a concentrated stock liquidation in 2024 could be generating higher Medicare costs right now — and you may not have anticipated it.

Proven Strategies for Reducing IRMAA Exposure

For high-net-worth Treasure Coast retirees, managing IRMAA is an active, ongoing planning discipline. Key strategies include:

• Roth conversion laddering: Spreading Roth conversions across multiple years at carefully managed income levels helps avoid pushing MAGI into higher IRMAA brackets. This is especially important during the window between retirement and age 73 when RMDs begin.
• Qualified Charitable Distributions (QCDs): Retirees age 70½ and older can donate up to $105,000 directly from an IRA to a qualified charity in 2026. QCDs count toward your RMD but are excluded from MAGI — a powerful tool for reducing IRMAA exposure while satisfying charitable goals.
• Capital gains timing: Long-term capital gains are included in MAGI for IRMAA purposes. Coordinating asset sales across tax years and using tax-loss harvesting to offset gains can meaningfully reduce IRMAA surcharges.
• Life-changing event appeals: If your income dropped significantly due to retirement, divorce, or death of a spouse, you can appeal your IRMAA determination using IRS Form SSA-44. This is underused by retirees who don’t know it exists.

Learn more about the full scope of IRMAA planning at Medicare.gov’s official Part B cost page. For a deeper dive into strategies for managing this specific medicare coverage gap, our team has assembled a dedicated resource.

Gap #4: Dental, Vision, Hearing — The Invisible Medicare Coverage Gaps

Why These Medicare Coverage Gaps Matter More Than Retirees Expect

Traditional Medicare provides virtually no coverage for routine dental, vision, or hearing care. This surprises many new enrollees who assume comprehensive health coverage means comprehensive care. In practice, the costs add up quickly — especially for retirees who prioritize their health and quality of life.

Consider what’s not covered under standard Medicare:

• Routine dental cleanings, X-rays, fillings, crowns, and dentures
• Complex dental procedures (implants, periodontal treatment)
• Routine eye exams and prescription eyeglasses
• Hearing aids (which can cost $3,000 to $7,000 per pair and are not covered at all)
• Routine foot care

The average retiree spends $1,500 to $3,000 annually on dental, vision, and hearing costs alone. For retirees with existing dental issues or age-related hearing loss, annual costs can run two to three times higher.

Closing These Medicare Coverage Gaps on the Treasure Coast

High-net-worth retirees generally have two practical paths:

1. Medicare Advantage plans: Many Medicare Advantage (Part C) plans include dental, vision, and hearing benefits. However, they come with tradeoffs — primarily network restrictions and prior authorization requirements that can complicate care for retirees with complex medical needs. Review carefully before enrolling.
2. Standalone supplemental plans: Dental-only and vision-only plans are available and relatively affordable ($30 to $80/month combined). For retirees who prefer traditional Medicare plus a Medigap supplement — the typical choice for HNW individuals who want maximum provider access — standalone plans are usually the better fit.

Many of the Treasure Coast’s leading dental specialists and hearing centers do not participate in Medicare Advantage networks. Retirees who value access to top providers in Stuart, Hobe Sound, or Jupiter Island should weigh that carefully before choosing a Medicare Advantage plan simply for the supplemental benefits.

Integrating Medicare Planning Into Your Broader Wealth Strategy

Medicare Coverage Gaps as a Portfolio and Tax Planning Issue

For high-net-worth Treasure Coast retirees, addressing medicare coverage gaps isn’t just an insurance decision — it’s a sophisticated intersection of tax planning, cash flow management, and estate strategy.

Consider how these elements interact:

• Healthcare reserve accounts: If you’re under 65 and still eligible, maxing out a Health Savings Account (HSA) is one of the most tax-efficient ways to build reserves for future Medicare gaps. In 2026, families can contribute $8,550 annually, and balances grow tax-free when used for qualified medical expenses.
• Roth accounts as healthcare reserves: Roth IRAs have no RMD requirements and withdrawals are tax-free — making them an ideal reserve for unexpected healthcare costs in later retirement years without triggering IRMAA surcharges.
• Estate planning integration: Long-term care costs can devastate an estate if not planned for. Irrevocable trusts, qualified personal residence trusts (QPRTs), and other vehicles may help protect assets while preserving Medicaid eligibility as a backstop — though this planning must begin years in advance.

Our comprehensive wealth management services specifically address how healthcare planning integrates with tax strategy, income planning, and estate goals — because for HNW retirees, these decisions don’t live in separate silos.

What a Coordinated Medicare Plan Looks Like for a $3M Retiree

To make this concrete, consider a retired executive couple in Stuart: combined investable assets of $3.2M, significant IRA balances generating future RMDs, and modest pension income. Their Medicare planning checklist might look like this:

1. Enroll in traditional Medicare Parts A and B at 65 to preserve maximum provider access
2. Add Medigap Plan G to eliminate the 20% unlimited cost-sharing gap
3. Add a standalone Part D prescription drug plan with appropriate formulary coverage
4. Execute a multi-year Roth conversion strategy from age 65 to 72 to reduce future RMDs and manage IRMAA brackets
5. Establish a $600,000 dedicated long-term care reserve (hybrid life/LTC policy) funded with a repositioned CD position
6. Use QCDs beginning at age 70½ to reduce MAGI and charitable giving costs simultaneously
7. Add standalone dental and hearing coverage ($65/month combined)

This kind of coordinated approach — not a single product decision — is what separates sophisticated retirement planning from simply checking the Medicare enrollment box.

For additional context on Medicare’s overall structure and official enrollment rules, the Social Security Administration’s Medicare enrollment page provides authoritative guidance. For research on healthcare cost projections in retirement, Fidelity’s annual retiree healthcare cost estimate is widely cited and updated regularly. Academic research on Medicare cost exposure is also documented through NerdWallet’s Medicare coverage analysis.

Frequently Asked Questions About Medicare Coverage Gaps

What are the most significant medicare coverage gaps for retirees with high incomes?

The most significant medicare coverage gaps for high-income retirees are the unlimited 20% cost-sharing under Part B, IRMAA surcharges that add thousands per year for those with MAGI above $212,000 (married, 2026), and the near-total absence of long-term care coverage. These gaps interact directly with tax planning decisions, making income management and Medicare strategy inseparable for HNW retirees.

Does Medicare cover long-term care costs like a nursing home or memory care?

Medicare does not cover custodial long-term care — the ongoing assistance with daily living activities that most people think of when they imagine a nursing home. Medicare does cover up to 100 days of skilled nursing facility care following a qualifying hospital stay, but this is strictly limited and not a substitute for long-term care planning. Retirees should address this medicare coverage gap through insurance, self-insurance, or hybrid policies well before they need care.

How does the IRMAA surcharge affect Treasure Coast retirees with large IRA balances?

Large IRA balances generate required minimum distributions beginning at age 73, which count as ordinary income and directly affect MAGI for IRMAA purposes. For retirees with $1M or more in IRAs, RMDs can easily push MAGI into higher IRMAA brackets, increasing Medicare premiums by thousands annually. Proactive Roth conversion strategies before RMDs begin are one of the most effective ways to manage this long-term medicare coverage gap cost driver.

Is Medicare Advantage a good option for high-net-worth retirees on the Treasure Coast?

Medicare Advantage can offer supplemental benefits like dental and vision, but it typically comes with network restrictions that limit access to top specialists — a significant concern for HNW retirees who prioritize provider choice. Most wealth-focused retirees on the Treasure Coast prefer traditional Medicare paired with a Medigap Plan G and standalone supplemental coverage, preserving nationwide provider access while closing the core medicare coverage gaps.

When is the best time to start planning for medicare coverage gaps?

Ideally, Medicare gap planning should begin five to ten years before retirement — particularly for long-term care insurance (which becomes harder to qualify for after age 65) and Roth conversion strategies (which are most impactful in the decade before RMDs begin). If you’re already on Medicare, it’s never too late to review your income structure for IRMAA exposure or to explore self-insurance strategies for care costs. Working with a fee-based fiduciary who integrates healthcare planning with your overall financial plan ensures all the pieces work together.

The Bottom Line for Treasure Coast Retirees

Medicare coverage gaps are not an inconvenient footnote to retirement planning — they are a central financial risk that can erode decades of disciplined saving. For retirees with $1M or more in assets, the strategies for managing these gaps are meaningfully different from what mass-market advice recommends.

The Treasure Coast offers an exceptional quality of life for retirees — but navigating Florida’s Medicare landscape, managing IRMAA across a dynamic income picture, and protecting a substantial estate from long-term care costs requires coordinated, sophisticated planning.

At Davies Wealth Management, we work specifically with high-net-worth individuals, executives, and business owners who want their medicare coverage gaps addressed within a comprehensive wealth strategy — not handled in isolation by an insurance agent or ignored entirely. If you’re ready to take a full look at how healthcare risk fits into your retirement picture, we’d welcome the conversation. Schedule a discovery conversation with our team to get started.

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Take the Next Step

Managing medicare coverage gaps is inseparable from income planning, tax strategy, and IRMAA management. Our Medicare IRMAA Planning Guide walks through the 2026 IRMAA brackets, Roth conversion timing strategies, and QCD planning in plain language — designed specifically for retirees with complex income situations.

👉 Download our Medicare IRMAA Planning Guide — and take one of the most important steps toward protecting your retirement income from avoidable Medicare costs.

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This content is for educational purposes only and does not constitute investment advice. Past performance is not indicative of future results. Advisory services offered through Davies Wealth Management, a Registered Investment Adviser. Please consult a qualified financial, tax, or legal professional regarding your specific situation.

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