How to Choose a Medical Biller: The Complete Guide | Atlas Billers

Choosing a medical billing company is one of the most consequential financial decisions a practice can make. The right partner can increase collections by 10-20%, reduce days in A/R by half, and free your staff to focus on patient care. The wrong one can silently bleed your revenue for years before you notice the damage.

This guide walks you through exactly what to evaluate, what to ask, and what to avoid.

What a Medical Billing Company Actually Does

Before evaluating vendors, it helps to understand the full scope of what a billing company should handle. A comprehensive medical billing partner manages:

Charge entry and claim submission — translating encounter documentation into clean claims with correct CPT, ICD-10, and modifier codes
Eligibility and benefits verification — confirming coverage before or at the time of service to prevent avoidable denials
Denial management and appeals — identifying denial root causes, correcting claims, and filing timely appeals
Payment posting and reconciliation — posting ERA/EOB payments, identifying underpayments, and reconciling deposits
Patient billing and follow-up — generating patient statements and managing patient balance collections
Reporting and analytics — providing transparent, actionable reports on key revenue cycle metrics

If a company you are evaluating does not cover every one of these functions, you are looking at a partial solution that will leave gaps in your revenue cycle.

The 8 Things That Actually Matter

1. Specialty-Specific Experience

Medical billing is not generic. A company that bills well for orthopedics may be completely unqualified to handle behavioral health or pain management. Each specialty has unique coding requirements, payer nuances, and compliance considerations.

Ask specifically: How many providers in my specialty do you currently bill for? Look for a minimum of 3-5 active clients in your specialty with at least two years of experience.

2. Clean Claims Rate

The industry average first-pass clean claims rate hovers around 80-85%. A competent billing company should consistently achieve 95% or higher. Every claim that does not pass on the first submission costs your practice time and money — the average cost to rework a denied claim is $25-$30.

Ask for their clean claims rate across their book of business, not just their best clients.

3. Days in Accounts Receivable

Days in A/R measures how quickly your billing company converts services into cash. The MGMA benchmark for well-managed practices is 30-40 days. If a prospective billing company cannot get you under 35 days, they are leaving money on the table.

Be wary of companies that quote averages without breaking down the A/R aging buckets. What matters most is the percentage of A/R over 90 days — it should be under 15%, ideally under 10%.

4. Technology and EHR Integration

Your billing company must integrate with your existing EHR and practice management system without requiring you to change platforms. Ask about:

Direct API or HL7 integration vs. manual data entry
Real-time claim status tracking
Patient portal and online payment capabilities
The specific clearinghouse they use and its payer connectivity

5. Transparency and Reporting

You should receive detailed monthly reports that include, at minimum:

Total charges, payments, and adjustments
Collection rate (net and gross)
Clean claims rate
Days in A/R with aging breakdown
Top denial reasons with trends
Provider-level production summaries

If a billing company resists giving you granular data, that is a disqualifying red flag.

6. Compliance and Security

Your billing partner handles PHI and submits claims on your behalf, making their compliance posture directly relevant to your liability. Verify:

HIPAA compliance policies and staff training documentation
Business Associate Agreement (BAA) terms
Data encryption standards (at rest and in transit)
Whether they carry professional liability and cyber insurance

7. Communication and Responsiveness

The single most common complaint practices have about billing companies is poor communication. During your evaluation, pay attention to how quickly they return calls and emails. If responsiveness is lacking during the sales process — when they are trying to win your business — it will only deteriorate after you sign.

Ask for a dedicated account manager and clarify expected response times. Anything over 24 hours for a routine inquiry is unacceptable.

8. References and Reputation

Request at least three references from practices similar to yours in size and specialty. When you call those references, ask:

How long have you worked with them?
What was your collection rate before and after?
How do they handle problems or disputes?
Have you ever considered switching away? Why or why not?

Red Flags That Should Disqualify a Billing Company

Not every billing company that looks professional on paper will perform in practice. Watch for these warning signs:

No specialty experience — “We bill for all specialties” without specific expertise in yours
Vague pricing — inability to clearly explain their fee structure and what is included
Long-term contracts with penalties — reputable companies earn your business monthly; they do not need to lock you in
Ownership of your data — your billing data and patient records belong to you, always
Reluctance to share metrics — if they cannot or will not tell you their average clean claims rate and days in A/R, walk away
Offshore-only operations — while offshore support can reduce costs, a company with no U.S.-based billing staff raises compliance and communication concerns

Questions Your Current Biller Hopes You Never Ask

If you already have a billing company, these questions will quickly reveal whether they are performing:

What is my first-pass clean claims rate for the last 6 months?
What percentage of my A/R is over 90 days?
How many claims were denied for timely filing last quarter?
What is my net collection rate, and how does it compare to the MGMA benchmark for my specialty?
Can you show me a trend report of my denial reasons over the past year?
How many appeals did you file last month, and what was the overturn rate?

If your current billing company cannot answer these questions with specific numbers within 48 hours, they are not tracking the data — which means they are not managing your revenue cycle.

How to Evaluate Proposals Side by Side

When comparing billing company proposals, normalize the comparison:

Calculate the true percentage cost by including all fees (base percentage, statement fees, clearinghouse fees, setup fees, technology fees)
Compare apples to apples on services — ensure each proposal covers the same scope of work
Weight performance metrics more heavily than price — a company charging 6% that collects 98% of allowable will always outperform one charging 4% that collects 88%
Factor in transition costs and timelines — how long will onboarding take, and what happens to claims in the pipeline?

Making the Final Decision

The best billing company for your practice is the one that combines specialty expertise, proven performance metrics, transparent communication, and a pricing model that aligns your incentives. Price matters, but it should never be the primary deciding factor. A billing partner that costs slightly more but collects significantly more will always generate a better return.

Take your time, ask hard questions, and verify every claim with data. Your revenue depends on it.