How to Choose a Medical Billing Company: 15 Questions to Ask Before You Sign

A growing family practice in the Midwest picked its medical billing company the way a lot of offices do: they compared quotes, went with the lowest percentage, and signed. Six months later, the office manager found a stack of unworked denials, a claims backlog nobody had flagged, and a monthly fee that had crept well past what was quoted. By the time they realized the vendor wasn’t the right fit, switching mid-quarter meant weeks of disrupted cash flow.

That story repeats itself across practices every year, and it’s the reason this guide to how to choose a medical billing company exists. Picking a medical billing services partner is one of the biggest financial decisions a practice makes — right up there with weighing medical billing company vs in-house billing. Before you sign anything, you need a clear list of the questions to ask before hiring a medical billing company — the ones that reveal how a vendor performs once the contract is signed, not just how they sound in a sales call.

A medical billing company handles claims submission, coding accuracy, and payment follow-up on behalf of a healthcare practice. Choosing the right medical billing company means vetting their pricing, denial-management process, compliance record, and communication before you sign a contract.

What Does a Medical Billing Company Do?

A medical billing company manages the revenue cycle management process on behalf of a practice — turning patient encounters into clean claims, submitting them to payers, and following up until they’re paid. Most full-service vendors also handle coding review, denial appeals, patient statements, and monthly reporting, so your staff isn’t chasing unpaid claims between patient visits. The best medical billing company for your practice acts less like a vendor and more like an extension of your front office — one that’s accountable for keeping cash flow steady.

In-House Billing vs. a Medical Billing Company: Which Is Right for You?

In-house billing keeps control inside your practice but requires you to hire, train, and manage billing staff; a medical billing company outsources that work to a dedicated team already built for claims, denials, and compliance. The right call on medical billing company vs in-house billing usually comes down to staff bandwidth, claim volume, and how much administrative work your practice wants to own directly. The table below breaks down the practical differences.

Most practices that outsource do so because a medical billing company spreads staffing, software, and denial-management costs across many clients, which usually costs less than running an equivalent in-house team. For a closer look at how unresolved claims pile up when nobody’s following up, see our denial code guide.

15 Questions to Ask a Medical Billing Company Before You Sign

Use these questions to ask a medical billing company as your vetting checklist — they cover the operational details that separate a strong partner from a costly mismatch. Ask them on an initial call, and get the answers in writing before you sign.

1. Experience and Specialty Fit

How long have you been in business, and have you worked with practices in my specialty? A vendor with years of experience in your specialty already knows the coding quirks, common denial reasons, and payer rules specific to your field, which shortens the learning curve and protects revenue from day one. A generalist biller with no specialty background will make more coding errors early on, and those errors show up as denied claims. Ask for a client list or case study from a practice similar in size and specialty to yours.

2. Pricing and What’s Included

What’s your transparent pricing structure, and what costs extra? Most vendors charge 4% to 10% of collections, a flat per-claim fee of $3 to $12, or a flat monthly rate per provider — but what matters most is what’s included. Denial follow-up, appeals, patient statements, and reporting should be part of the base fee, not billed separately. Ask for a sample invoice and a written fee breakdown before comparing quotes, since the lowest headline percentage isn’t always the lowest total cost.

3. Claims Denial Rate and Denial Management

What’s your average claims denial rate, and how do you work denials once they happen? A well-run medical billing company should sit in the single digits for first-pass denials and have a documented process for appealing and resubmitting the rest within days, not weeks. Ask who works denials, how quickly they’re touched after a rejection, and whether aging denials get escalated automatically. A vendor that can’t give you a real number, or blames payers for every rejection, hasn’t built the follow-up process your revenue depends on.

4. HIPAA Compliance and Data Security

How do you ensure HIPAA compliance and protect patient data across your systems and staff? Ask about staff training frequency, access controls, encryption standards, and whether they can produce a current HIPAA compliance certificate or a signed Business Associate Agreement (BAA) on request. A vendor handling protected health information without documented safeguards puts your practice’s compliance exposure at risk too, not just theirs. Any company that hesitates to share compliance documentation, or treats the question as a formality, is a sign to keep looking.

5. EHR and Practice Management Integration

Does your platform offer real EHR/practice management integration with the system your practice already uses? A vendor that connects directly to your EHR/practice management software cuts down on manual data entry, reduces transcription errors, and speeds up how quickly charges turn into submitted claims. If integration isn’t native, ask how they handle data transfer and how long setup typically takes. Practices that skip this question often discover mid-onboarding that “integration” really meant manual exports and double data entry.

6. Coding Accuracy and Quality Control

How do you maintain coding accuracy, and what quality-control checks happen before a claim goes out? Ask whether coders hold AAPC-issued CPC or CPB certification — the industry-standard credentials for billing and coding professionals — and what the practice’s clean-claim rate has looked like over the past year. Consistent coding accuracy is what keeps first-pass acceptance high and denials low. If a vendor can’t explain how errors get caught before submission, assume more are getting through than they’re telling you.

7. Contract Terms and Termination

What are the medical billing company contract terms, including length, renewal, and how you exit if things don’t work out? Look closely at auto-renewal clauses, early-termination fees, and how much notice you owe before switching vendors — a 12-month contract that auto-renews is very different from a flexible month-to-month agreement. Ask what happens to your data and any unresolved claims if you leave, and get the transition process in writing. Vague contract terms are one of the most common reasons practices feel stuck in a bad billing relationship.

8. Client References

Can you provide client references from practices similar to mine in size or specialty? A medical billing company confident in its performance should connect you with two or three current clients willing to talk about denial rates, communication, and how issues actually got resolved. When you call references, ask what surprised them after signing and whether they’d choose the same vendor again. A company that stalls on references, or only offers testimonials pulled from its own website, hasn’t earned the trust it’s asking for.

9. Days in Accounts Receivable

What’s your average days in accounts receivable (A/R), and how do you keep aging claims from stalling? Days in A/R measures how long it takes, on average, to get paid after a claim is submitted — lower is better, and well-run vendors keep most A/R under 30 to 40 days. Practices are increasingly turning to outsourced RCM support specifically to keep this number down. Ask how they track it, and how often claims sit unworked past 90 days.

10. Collection Rate

What collection rate do you typically achieve for practices like mine, and how is it calculated? A strong collection rate — the percentage of allowed charges actually collected — usually sits above 95% for well-managed practices. Ask whether the number they quote is gross or net of adjustments, since vendors sometimes present the more flattering figure without clarifying which one it is. Request the collection rate broken out by payer type, since government and commercial payers often perform very differently.

11. Credentialing Support

Do you offer credentialing support for new providers, new locations, or new payer contracts? Credentialing delays can leave a new provider unable to bill for weeks or months, so ask whether the vendor manages payer enrollment directly or expects your staff to handle it separately. A medical billing company that includes credentialing support as part of the service saves real administrative time, especially for growing practices. Confirm turnaround times and who’s responsible if an application stalls with a payer.

12. Customer Support Responsiveness

How responsive is your customer support, and will I have a dedicated point of contact? Ask about typical response times for billing questions, whether you’ll work with the same account manager consistently, and what happens when that person is out. Poor customer support responsiveness is one of the top complaints practices report after switching vendors, usually because they didn’t ask about it upfront. Request a real example of how they’ve handled an urgent billing issue for another client.

13. Reporting and Technology

What reporting and analytics will I have access to, and how often are reports delivered? You should expect monthly reports covering collections, denials, A/R aging, and claim status at minimum — ideally through a live dashboard rather than a static PDF. Ask for a sample report before you sign so you know exactly what visibility you’ll have into your own revenue cycle. A vendor that can’t show real reporting examples may not have the tracking systems to back up the numbers they quote.

14. Scalability

Can your team scale with my practice as claim volume and provider count grow? Ask what staffing changes happen as volume increases, whether pricing shifts at certain thresholds, and how they’ve supported other practices through fast growth. A billing company built to outsource medical billing work at scale should describe specific examples, not just assure you they “can handle it.” Confirm this now, since renegotiating capacity mid-growth is harder than setting expectations before you sign.

15. Onboarding and Transition Process

What does the onboarding and transition process look like if I’m switching from another vendor or from in-house billing? Ask for a realistic timeline, who handles data migration, and how open claims and unresolved denials from your previous system get picked up rather than dropped. A clear, documented transition plan is one of the clearest signs a medical billing company has done this before and won’t let anything slip through the cracks during the switch. Get the plan in writing, including named milestones and a go-live date.

Red Flags to Watch for When Vetting a Medical Billing Company

The clearest red flags medical billing company vetting should catch are vague answers about denial rates, reluctance to share references, and pricing that isn’t fully explained in writing. These warning signs tend to show up during the sales process itself, long before a contract gets signed, if you know what to listen for.

• Can’t quote a real denial rate or collection rate when asked directly
• Avoids putting pricing or contract terms in writing
• No documented HIPAA compliance process, or refuses to share a signed BAA
• Client references are unavailable, outdated, or unverifiable
• Long-term contract with steep early-termination penalties and no month-to-month option
• Slow or inconsistent communication during the sales process itself

If a vendor shows two or more of these red flags before you’ve even signed, treat it as a preview of what working with them will be like.

How TMS Billings Helps Practices Choose With Confidence

TMS Billings helps practices evaluate a medical billing company — including our own — against the same criteria in this guide: transparent pricing, documented denial-management performance, and client references you can actually call. Our medical billing services are built around proactive denial follow-up and a dedicated account team, so practices aren’t left chasing answers about their own claims. Whether you’re vetting your first billing partner or considering a switch, our team will walk through your current numbers — denial rate, days in A/R, collection rate — and show you exactly where a stronger partner would move the needle.

Final Thoughts

Choosing a medical billing company is a bigger decision than it looks like on the surface — the vendor you pick will directly shape your practice’s cash flow, compliance exposure, and how much staff time gets eaten by billing headaches for years to come. Work through these 15 questions with every medical billing company you’re considering, put the answers in writing, and don’t sign until the numbers hold up.

Get My Free Billing Audit

Picking the wrong medical billing company can mean hidden fees, slow claim turnaround, and denials nobody follows up on — all draining revenue you already earned. TMS Billings gives practices transparent pricing, proactive denial management, and a dedicated team, so switching (or starting) never puts your cash flow at risk.