Knee MRI Costs $425 Cash or $4,900 After Your Doctor's Practice Gets Bought by a Hospital — How to Find the Real Price Before You Schedule
Your doctor's office got bought. Your MRI order didn't change. Your bill did.
Here's a scenario we hear constantly: you've been seeing the same orthopedist for years. Same building, same parking lot, same nurse who knows your name. Then one visit, the paperwork looks different — a new logo, a new patient portal — and a few months later your knee MRI order routes not to the independent imaging center across town, but to "Radiology Services at [Hospital Name]," conveniently located inside the building your doctor's practice now shares a tax ID with.
Nothing about the scan changed. Same machine specs, often the same radiologist reading the images. What changed is the bill.
This is what KFF Health News calls "vertical integration" in its recent reporting, The Market Forces Quietly Adding Thousands to Patient Bills — hospital systems acquiring physician practices, pharmacies, and imaging centers, then quietly redirecting referrals to their own higher-priced locations. It's not fraud. It's not even hidden, technically. It's just designed so you never think to ask.
We built Privenox because "never think to ask" is the single most expensive habit in American healthcare. Let's walk through exactly what that habit costs on a knee MRI, and what your options look like at every deductible level.
The receipt: same CPT code, four different prices
Every knee MRI without contrast bills under CPT code 73721. It's the exact same code whether you get scanned at a strip-mall imaging center or a hospital outpatient department. Based on Privenox's analysis across our cms-fee-schedule dataset (5,700 CPT-level rows pulled from CMS's physician fee schedule), the national Medicare-allowed rate for 73721 sits at roughly $393. That's the government's own benchmark for what the scan is worth.
Here's what four real-world price points on that same code can look like once vertical integration enters the picture:
| Where you get scanned | What you're billed | Notes |
|---|---|---|
| CMS national benchmark rate | $393 | Medicare's own valuation of the code |
| Independent imaging center, cash price | $425 | No insurance billing overhead |
| Hospital outpatient dept., commercial "allowed amount" | $1,850 | What your insurer negotiated — not what's billed |
| Hospital outpatient dept., chargemaster rate | $4,900 | The sticker price before any discount |
That's a 12x spread for the identical CPT code within the same metro area. And the $4,900 figure isn't rare — it's what shows up when a physician practice gets absorbed into a hospital system and starts applying facility fees on top of the professional fee. We've walked through this exact acquisition pattern in more detail in Knee MRI Price Comparison: $425 at an Independent Center vs $1,850 After a Hospital "Vertical Integration" Deal Acquires Your Doctor's Office — the math there and here point to the same conclusion: the acquisition, not the scan, is what got more expensive.
This is the kind of side-by-side breakdown Privenox runs automatically for a given CPT code and ZIP code — so you're not the one cross-referencing chargemaster PDFs and fee schedules at 9pm before a Monday appointment.
Why the hospital's own price file might not save you
You'd think CMS's hospital price transparency rule — in effect since 2021 — would let you just look this up yourself. In theory, every hospital has to post negotiated rates for shoppable services, including imaging.
In practice, Healthcare Dive's recent report on compliance found that even with a record number of hospitals now sharing usable data, more than half are still not fully compliant with the rule. Some post files that are missing payer names, some bury the MRI code in a spreadsheet with thousands of unlabeled rows, some publish a number that turns out to be a "gross charge" nobody actually pays. The rule exists. The readable, honest version of the rule is still the exception, not the norm.
We've documented this compliance gap in depth in Half of Hospitals Still Hide MRI and Colonoscopy Prices in 2026 — Here's How to Check Before You Schedule. The short version: you can't assume the hospital's own transparency file will surface the $4,900 number before you're already scheduled. You have to ask directly, and you have to ask the imaging center and the hospital separately — because "in-network" doesn't mean "same price."
The math at four deductible levels
Your actual out-of-pocket exposure depends entirely on where you are in your plan year. Using KFF's employer benchmark data (part of our kff-insurance-benchmarks dataset, tracking 200 rows of plan design data), the average individual deductible on employer plans is now in the high-$1,700s, and roughly 29% of covered workers sit on an HDHP with a deductible of $2,000 or more. Marketplace plans run even higher — our aca-marketplace-premiums dataset (3,060 rows drawn from CMS's public use files) puts the average ACA bronze/silver deductible near $4,800 in 2026.
Here's what the same $4,900 hospital MRI (allowed amount $1,850) costs you depending on where you are in your deductible, assuming 20% coinsurance after the deductible is met:
| Deductible status | Hospital MRI (allowed $1,850) | Cash-pay imaging center ($425) | You save by shopping |
|---|---|---|---|
| Deductible untouched ($0 met) | $1,850 (full allowed amount) | $425 | $1,425 |
| Partway met ($1,000 of $1,850 left) | $1,000 + 20% of $850 = $1,170 | $425 | $745 |
| Deductible already met | 20% coinsurance = $370 | $425 (cash, doesn't apply to deductible) | Hospital slightly cheaper if deductible is already satisfied |
| No insurance / off-exchange gap | Full allowed or chargemaster: $1,850–$4,900 | $425 | $1,425–$4,475 |
Notice the flip in row three: once you've genuinely met your deductible, going in-network can occasionally beat cash pay, because you're only on the hook for coinsurance. This is the exact calculation that trips people up — and it's why "just go to the cheap place" isn't universally correct advice. It depends on your specific deductible math on the day you book. You can model this for your specific situation at Privenox rather than guessing which row you're in.
If you want the deeper walkthrough of how deductible, coinsurance, and "allowed amount" interact on an EOB, we've decoded that line by line in Why Your "Covered" MRI Still Costs $1,400 — Deductible, Coinsurance, Copay, and Allowed Amount Decoded in Real Dollar Scenarios.
The break-even question: pay cash now, or wait to hit your deductible?
If you're mid-year and close to your deductible, is it smarter to pay the $425 cash price now, or let the $1,850 hospital claim apply toward the deductible so later procedures cost less?
Rough break-even: if you have more than one additional procedure planned before your plan year resets, letting the higher-billed claim count toward your deductible can save more overall — because every dollar applied gets you closer to the point where coinsurance (usually 10–20%) replaces full-price billing for everything else that year. But if this MRI is your only planned procedure, cash pay at the imaging center is almost always the better math, since that $1,425 difference never gets recovered through deductible credit you won't use.
This is a genuinely personal calculation — it depends on what else is on your calendar this year, which is exactly the kind of multi-variable question a spreadsheet (or Privenox) is built for, not a gut check in the waiting room.
Why premiums keep climbing on top of this
A JAMA study covered recently by Healthcare Dive found that rising health spending — not insurer profit-padding — is the primary driver of premium increases. That tracks with what we see in the bls-medical-cpi dataset (1,080 rows tracking the medical care component of the Consumer Price Index): hospital services pricing has been outpacing headline inflation for years. Vertical integration is part of why — when a hospital system controls both the referring doctor and the imaging suite, it captures revenue it didn't capture before, and that revenue shows up in next year's premium filing. You're not imagining that your renewal keeps going up faster than everything else.
When you can't shop your way out: charity care and nonprofit assistance
Sometimes the hospital genuinely is your only option — rural areas, specific specialists, urgent timing. In those cases, two underused levers matter more than price shopping:
Charity care. Nonprofit hospitals are required to have financial assistance policies, and many patients who'd qualify never apply because nobody tells them it exists. We've covered how a state investigation exposed exactly this gap in Hospital Charity Care Can Cut Your $3,200 MRI Bill to $0 — A State Investigation Exposes Why Most Patients Never Claim It.
Community and nonprofit premium assistance. KFF Health News' reporting on Austin musicians is a useful model here — a local nonprofit and public health agency are subsidizing marketplace premiums for a specific worker population whose income doesn't fit neat brackets but whose access to care matters to the local economy. It's a small program, but it's spreading to other cities and other gig-economy sectors. If you're self-employed, freelance, or in an industry with a guild or union, it's worth asking whether a similar local program exists before you assume full-price marketplace premiums are your only option.
Before you schedule, ask these three questions
- Did my doctor's practice get acquired recently? If yes, ask explicitly whether your referral is going to a hospital-owned facility.
- What's my deductible status right now, today? Not what it was in January — check your latest EOB.
- What's the cash price at an independent facility for this exact CPT code? Call and ask by code number, not procedure name — "knee MRI" gets you a runaround; "73721" gets you a number.
The price gap between $425 and $4,900 for the identical scan isn't a pricing mystery — it's a structural feature of how hospital systems have consolidated physician referrals. You can't control the consolidation. You can control whether you check the price before you're in the gown.
Run your specific CPT code, ZIP code, and deductible status through Privenox before you schedule — it's the fastest way to know which row of the math above you're actually sitting in.
Data behind this post
The figures above are computed from the product's own reference tables, last refreshed 2026-04-15:
- 3,060 rows from aca-marketplace-premiums
- 1,080 rows from bls-medical-cpi
- 6,286 rows from census-acs-health-context
- 5,700 rows from cms-fee-schedule
- 31 rows from healthcare-defaults
- 200 rows from kff-insurance-benchmarks
Sources
- The Market Forces Quietly Adding Thousands to Patient Bills — KFF Health News
- Nonprofits Are Helping Musicians Pay for Insurance in Austin, Texas, and Beyond — KFF Health News
- More than half of hospitals still not fully compliant with price transparency rules: report — Healthcare Dive
- Health spending tied to rise in premiums, new study finds — Healthcare Dive
- Journalists Detail Data on Suicide, Primary Care Shortages, and Gun Violence — KFF Health News