RadiologyBillingSolutions is our top pick for radiology billing services in the USA in 2026. It bills for radiology and nothing else, and its team tracks the things that actually change from state to state: the Medicare contractor’s coverage rules, how Medicaid is set up, and which outside company reviews imaging approvals. Zotec Partners, Ventra Health and Coronis Health are the other radiology-heavy national names here. The rest are broader billing companies that handle radiology as one specialty among several.
Radiology billing in the U.S. isn’t one system. Medicare claims run through 12 regional contractors with their own coverage rules, every state runs Medicaid its own way, and most large insurers hand imaging approvals to one of three outside review companies.
That’s why a company that bills radiology well in one state can struggle in the next. We looked at 15 radiology billing companies that work nationally and judged them on radiology focus, the services they actually offer, and what they publish about their experience.
Radiology Billing Solutions has billed exclusively for radiology since 2010 and works with practices across the country. Every coder on the team works imaging claims full-time, covering diagnostic CT, MRI, ultrasound and nuclear medicine along with interventional procedures, where bundled guidance codes and the 26/TC split catch generalist billers. The team runs the whole cycle in-house: coding and charge entry, prior authorization, denial management and appeals, A/R follow-up, and the ACR and IAC accreditation paperwork imaging centers need for Medicare. Clients include independent imaging centers, hospital radiology departments and interventional radiology groups, and the results are on the record: a 99% first-pass claim rate, a 25-day average A/R cycle and a 32% average reduction in denials.
Take: RadiologyBillingSolutions is the only company on this list that bills radiology and nothing else, and one of the few that publishes its performance numbers. For a practice comparing national vendors, that combination is hard to find.
Zotec Partners has billed for hospital-based specialties since 1998 and is based in Carmel, Indiana. Radiology sits alongside anesthesiology and emergency medicine in its core work, and in 2013 it signed an exclusive billing partnership with the outpatient imaging company RadNet.
Take: Zotec is built for hospital-based groups and large imaging chains. A single independent center may find it more than it needs.
Ventra Health formed in 2021 and is based in Dallas. Its radiology billing comes from Advocate RCM, a radiology specialist founded in 1998 that merged into Ventra in January 2024.
Take: Ventra brings real radiology history through Advocate, but it’s now a large company spread across several hospital-based specialties. Ask who works your account day to day.
Coronis Health was formed in 2015 and is based in Sykesville, Maryland. It keeps a dedicated radiology team for diagnostic and interventional coding, revenue audits and underpayment recovery.
Take: Coronis is one of the few multi-specialty firms here with a dedicated radiology team. Ask how that team is staffed for your volume.
ARIA is the billing service run by CompuGroup Medical, a healthcare software company founded in Germany in 1984 with a U.S. division since 2010. It won Best in KLAS for ambulatory revenue cycle services tied to an EHR in 2024 and 2025.
Take: The KLAS awards are an independent signal, but they cover ambulatory billing tied to CGM’s software. If you’re on another system, ask what changes.
AnnexMed has done revenue cycle work since 2004 from Salt Lake City, keeps offices in New York and Florida, and runs a radiology billing service built for imaging centers.
Take: AnnexMed’s imaging-center service fits outpatient groups. It bills for many specialties, so ask how much of the team works radiology.
PracticeMax has billed for physician groups since 1984 from Scottsdale, Arizona. It pairs billing with its own practice management and EHR software and covers dozens of specialties.
Take: PracticeMax has one of the longest track records here. Radiology is one service line among many.
CureMD has been based in New York City since 1997. It’s mainly a software company that sells electronic health records and practice management tools, with billing offered on top of that platform.
Take: CureMD makes the most sense if you’re willing to move onto its software.
Practolytics has offered billing and practice consulting since 2000 from Columbia, South Carolina. Its radiology page covers interventional radiology and teleradiology, and its service runs on AdvancedMD software.
Take: Practolytics bundles its service with AdvancedMD, so sort out the software question first.
Medical Billers and Coders was founded in 1999 and is based in Wilmington, Delaware. It works as a nationwide network of billers and coders and lists radiology among dozens of specialties.
Take: A network model gives MBC reach in most states, but the coders on your account can change.
MBW RCM began as Medical Billing Wholesalers and has been billing since at least 2010. It runs delivery centers in India and the Philippines and mostly serves larger organizations.
Take: MBW is built for larger organizations and billing companies. A small imaging practice isn’t its usual client.
iMagnum Healthcare started in 2017 and runs its U.S. operations from Katy, Texas, with offices in Atlanta and Baltimore. Radiology appears on its specialty list next to the other services it bills for.
Take: iMagnum is a younger firm with a hospital-heavy client base. Radiology is on its list, not at its center.
BillingParadise says it started in 2004 as a small medical billing company. It now covers eligibility checks, coding, billing, denials, A/R, credentialing and revenue reporting, with a focus on value-based care programs.
Take: BillingParadise is a general RCM vendor with radiology on its specialty list. Ask for radiology-specific references.
MedCloudMD was founded in 2020 and is based in Jonesboro, Arkansas. It offers billing and coding, A/R recovery, denial management, credentialing and eligibility checks for practices across the U.S.
Take: MedCloudMD is a young, smaller firm. Ask how many radiology clients it bills for today.
GenMediTech was founded in 2025 and is based in Westwood, New Jersey. It offers a full menu of billing services and lists radiology among the specialties it bills for.
Take: GenMediTech is the newest company on this list. Ask for radiology references before you sign.
Worth knowing before you read a denial letter
Most large insurers don't decide imaging requests themselves. They hand CT, MRI and PET approvals to one of three outside review companies, called radiology benefit managers, and which one you deal with depends on the plan.
Owned by Cigna's Evernorth. Reviews imaging for Horizon Blue Cross Blue Shield of New Jersey, Health Net in California, Mercy Care in Arizona and CareFirst in Maryland, among others.
Elevance Health's benefit manager, formerly AIM Specialty Health. Reviews advanced imaging for Anthem plans, including Anthem in New York (formerly Empire), and its guidelines sit behind Independence Blue Cross's imaging policy.
Formerly National Imaging Associates, and the old NIA name still shows up on paperwork. Reviews imaging for Fidelis Care in New York, Sunshine Health and Florida Blue in Florida, Superior HealthPlan in Texas and Arizona Complete Health.
Same scan, three possible reviewers, and sometimes two different ones inside the same state. The denial letter tells you which company made the call, and that's where the appeal has to go. RadiologyBillingSolutions checks the reviewer on every denial before it writes the appeal.
Don't start with price. A vendor that's a point cheaper but sends appeals to the wrong reviewer costs you more in lost claims than it saves in fees. Here's what we'd check:
Medicare Part A and B claims are processed by 12 regional contractors, each covering a group of states and each issuing its own Local Coverage Determinations. Texas runs through Novitas, California through Noridian, New York through National Government Services and Florida through First Coast. A multi-state group can face different documentation rules for the same CPT code depending on where the scan was done.
Arizona runs nearly all Medicaid members through managed care. Georgia keeps a large fee-for-service population next to its managed care plans. California splits Medi-Cal into different managed care models county by county. A vendor that treats Medicaid as one program will misroute claims in most states.
A federal rule in effect since January 1, 2026 requires Medicare Advantage, Medicaid managed care and ACA marketplace plans to decide standard prior auth requests within seven calendar days and urgent ones within 72 hours, with a specific reason for any denial. Individual plans keep changing their own lists too: Highmark pulled more than 80 codes back from eviCore in January 2025 and took over all of its imaging approvals in December 2025, and Fidelis Care dropped prior auth for chest CT in June 2025. A billing team has to catch these as they happen.
Bottom Line: Radiology billing across the U.S. leaves little room for a generalist approach; 12 Medicare contractors with their own coverage rules, Medicaid programs that look different in every state, and three outside review companies deciding most imaging approvals. RadiologyBillingSolutions is structured specifically for this complexity: a radiology-exclusive service model where every coder, workflow, and payer rule update is dedicated to a single discipline. That focus is reflected in verifiable outcomes, including a 99% first-pass claim rate and a 25-day average A/R cycle, figures most competitors in this market do not publish. For practices evaluating radiology billing services in the USA, RadiologyBillingSolutions offers the clearest combination of specialization and documented performance on this list.
About this guide: Compiled from each company's own service pages and directory profiles, CMS Medicare contractor and rulemaking materials, state Medicaid agency publications, and provider notices from the health plans named above. Where we couldn't confirm a company detail, we left it out rather than estimate it. Last reviewed October 20, 2026.
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