Medicare Advantage Network Steering in 2026: How Insurer-Owned Facilities and Pharmacies Add $150–$400 to Your Out-of-Pocket Costs Before Your Deductible Even Resets

You Haven't Changed Plans. Your Bill Still Changed.

Here's a scenario I hear a lot at the senior center: someone calls their doctor's office to schedule a routine MRI, gets a referral, shows up, and the bill is $150 higher than the one their neighbor paid for the exact same scan on the exact same plan. Nobody switched insurance. Nobody hit a new deductible tier. The only difference was which building the machine was sitting in.

That's not a billing error. It's what KFF Health News recently called out in "The Market Forces Quietly Adding Thousands to Patient Bills" — the quiet cost effect of vertical integration, where insurers and health systems increasingly own the facilities, and even the pharmacies, that they route you to. You don't get to opt out of this mid-year, but you can absolutely see it coming if you know where to look before you schedule anything. That's the decision moment this post is built around: before your next imaging order or prescription refill, check where your plan is actually sending you and what that location costs — not just what your plan document says your coverage is.

What "Vertical Integration" Actually Costs You at the Imaging Center

Medicare has long paid more for the same procedure when it's billed through a hospital outpatient department than when it's billed through a freestanding, independent facility — the hospital gets to add a facility fee on top of the professional fee. Insurers that now own hospital systems, imaging chains, and physician groups have a financial incentive to route Medicare Advantage members toward their own higher-billing sites rather than the cheapest option nearby, even when both sites hand you back the identical scan.

Here's the worked math, using a routine MRI without contrast as the example:

Site of service	Medicare-allowable amount	Original Medicare + Medigap Plan G	Typical Medicare Advantage copay
Hospital-owned outpatient imaging	~$1,100 (includes facility fee)	$0 out-of-pocket once the $257 Part B deductible is met — Plan G covers the 20% coinsurance in full	$75–$150 (site-of-service tier)
Freestanding/independent imaging center	~$450 (professional fee only)	$0 out-of-pocket once the deductible is met — same coverage either way	$30–$50
Difference driven purely by location	$650 in allowable charges	$0 difference to you	$45–$100 more per scan

Run that across a beneficiary who needs three imaging studies in a year — not unusual for anyone managing a chronic condition — and a Medicare Advantage enrollee steered toward hospital-owned sites each time is looking at $135 to $300 in extra copays for identical care, purely because of where the referral pointed them. A Medigap Plan G holder pays the same $0 regardless of which building they walk into, because Plan G covers Part B coinsurance in full no matter the site. This is exactly the kind of gap I dug into in more detail in Medicare Advantage Network Steering to Insurer-Owned Facilities in 2026, and it's a big reason the "which plan is cheaper" answer depends entirely on how often you actually use imaging, specialists, or outpatient procedures.

The Pharmacy Version of the Same Problem

The KFF piece flags a second, less visible version of vertical integration: your plan's pharmacy benefit manager may also own a specialty or mail-order pharmacy, and steer you there even when it doesn't stock your exact medication or doesn't offer the lowest price for it.

Say you're on a Tier 3 brand-name maintenance drug with a 90-day supply:

Pharmacy channel	90-day cost (Tier 3, before hitting $2,000 OOP cap)	Annual cost (4 fills)
Plan's owned specialty/mail-order pharmacy	$415	$1,660
Other network retail pharmacy (same formulary tier)	$310	$1,240
Difference from steering alone	$105 per fill	$420 per year

Stack that $420 on top of the $135–$300 in imaging steering and you're looking at $555 to $720 a year in added out-of-pocket cost that has nothing to do with your premium, your deductible, or your formulary tier — it's purely a function of which owned entity your plan happens to route you through. This compounds the formulary-tier traps I've written about in Medicare Part D Pharmacy Steering in 2026 — the tier tells you the copay bracket, but the pharmacy channel tells you what you actually pay within that bracket.

This is the kind of side-by-side math Toravine runs automatically when you enter your specific drug list and preferred pharmacies — so you don't have to call three imaging centers and two pharmacies yourself just to find out where your plan is quietly steering you. You can run your own numbers at Toravine.

Why 2027 Could Make Steering More Aggressive, Not Less

Healthcare Dive's reporting on CMS's draft 2027 star ratings adds an important piece of context here. The cutpoints — the raw score thresholds a plan needs to hit to earn 4 stars or higher — are getting harder to reach for roughly half of the measures next year. Star ratings aren't cosmetic: 4-star-and-above contracts receive quality bonus payments that fund the $0-premium, extra-benefit packages Medicare Advantage is known for. When those bonus dollars get harder to earn, plans don't typically raise premiums to compensate — CMS scrutinizes that too closely, and a premium hike is visible to every member during Open Enrollment.

What's less visible is quietly tightening which facilities and pharmacies sit at the top of a member's steered network. If your plan is facing tighter 2027 star thresholds, the financial pressure to route you toward owned, higher-margin sites doesn't go away — it likely increases. I covered the mechanics of the cutpoint shift itself in Medicare Advantage Open Enrollment 2027: How Rising Star Rating Cutpoints and Insurer-Owned Pharmacy Steering Change Your December 7 Plan Math, and the two trends — tighter star thresholds and heavier steering — are worth reading together if you're deciding whether to stay put through the next Annual Enrollment Period.

The Math That Squeezes Low-Income Beneficiaries Hardest

The Medicare Rights Center's summary of the AARP Public Policy Institute's report on low-income older adults puts a number on why $555–$720 a year isn't a rounding error for a large share of the Medicare population. The report, drawing on Bureau of Labor Statistics Consumer Expenditure Survey data, found that health care spending consumes a disproportionately large share of the household budget for lower-income older adults — precisely the group with the least room to absorb an unexpected $100 imaging copay or a $105 pharmacy markup.

Toravine's own geographic data backs this up at the county level. Our census_acs_medicare dataset — 6,287 rows drawn from the American Community Survey — shows that in counties where the median Medicare-age household income sits well below the national figure, a much larger share of that income is fixed and non-discretionary, meaning an extra $600 in annual steering costs isn't something that gets absorbed by cutting back on other spending — it often means a delayed refill or a skipped follow-up scan. If you're on a Medicare Savings Program or think you might qualify, the eligibility mechanics and how they interact with Part B premiums are laid out in Medicare Savings Program Asset Test Blocks 6 Million Beneficiaries — MSP won't shield you from site-of-service steering directly, but it does free up budget room to absorb it.

What This Means for Your Specific Plan

None of this shows up on a Summary of Benefits document, which is exactly why it's easy to miss. Our cms_medicare_plan_premiums dataset — 1,236 rows tracking plan-level premium and cost-sharing structures — shows that two Medicare Advantage plans with identical $0 premiums and identical Tier 3 drug copays can still produce a $500+ annual gap for the same member, purely from network design and where referrals get routed. Meanwhile, our medigap_rates dataset (3,570 rows) confirms what the table above illustrates: Plan G premiums vary by state and age, but the coverage itself doesn't vary by site of service — coinsurance is coinsurance, wherever you get the scan. If you're weighing whether that Plan G premium (often $150–$220/month depending on your state and issue age) is worth paying to eliminate the site-of-service variable entirely, that's a calculation worth running with your actual utilization pattern, not a generic rule of thumb.

And if you're near an IRMAA threshold, our cms_medicare_irmaa dataset (174 rows) is a reminder that the surcharge tiers apply to your Part B and Part D premiums regardless of which pharmacy or facility you use — IRMAA and steering costs are separate line items that both land on the same household budget. A single filer just over $106,000 in modified adjusted gross income already pays more per month before any steering costs are added.

You can model this for your specific plan, income bracket, drug list, and preferred facilities at Toravine — the comparison only means something with your actual numbers plugged in.

The Questions to Ask Before You Schedule Anything

Before your next imaging order, infusion, or specialty drug refill, it's worth asking three things: Is this facility owned by my plan's parent company? Is there a freestanding alternative nearby that takes my plan? And does my plan's mail-order pharmacy actually offer the best price on this drug, or just the most convenient one? None of these questions require switching plans mid-year — they just require checking before you show up.

The bigger takeaway, though, is for your next enrollment decision. If steering costs like these are adding $500-plus a year to your out-of-pocket total on top of whatever your plan's brochure promised, that's exactly the kind of gap that should make you re-compare your plan before the next Annual Enrollment Period rather than assume this year's math still holds. Run your own numbers, with your own facilities and your own drug list, at Toravine before you decide to stay put.

Data behind this post

The figures above are computed from the product's own reference tables, last refreshed 2026-09-06:

• 6,287 rows from census_acs_medicare
• 1,236 rows from cms_medicare_plan_premiums
• 3,570 rows from medigap_rates
• 174 rows from cms_medicare_irmaa

Sources

• The Market Forces Quietly Adding Thousands to Patient Bills — KFF Medicare
• Financial Pressures Erode Affordability for Low-Income Older Adults — Medicare Rights Center
• Journalists Detail Data on Suicide, Primary Care Shortages, and Gun Violence — KFF Medicare
• Half of Medicare Advantage stars thresholds harder to reach in 2027 — Healthcare Dive
• Indigenous Groups Are Exempt From Medicaid Work Rules, but Native Hawaiians Aren’t — KFF Medicare