Outsourcing Medical Billing Services: What It Costs and How to Choose a Partner
A practical look at what outsourcing covers, what it typically costs, and how small and mid-size practices evaluate a billing service.
Jargon Buster is on: hover or tab to any underlined term for a plain-English definition.
What "outsourcing medical billing" actually covers
Outsourcing medical billing services means a practice hands its revenue cycle to a specialist team instead of running it with in-house staff. That typically spans eligibility verification and prior authorizations, coding and charge entry, claim submission, payment posting, denial management, AR recovery, and patient billing. A billing service works inside the practice's existing EHR; it isn't software you install, it's a team that plugs into the system you already use.
What it typically costs
Most medical billing services for small practices price one of three ways.
| Pricing model | How it works | Best for |
|---|---|---|
| Percentage of collections | A fee (commonly 4–9%) taken only on what's actually collected | Practices that want the service's incentives aligned with getting paid |
| Per-claim flat fee | A fixed fee per claim submitted, regardless of outcome | High-volume, lower-dollar-value visits |
| Hybrid / flat monthly | A flat monthly rate, sometimes with claim-volume tiers | Practices that want predictable costs |
Percentage-of-collections is the most common model because it ties the service's revenue to the practice's: a billing company that doesn't work denials or chase AR doesn't get paid either.
What's usually included at that price
- Credentialing and payer enrollment for new or existing providers
- Eligibility checks and prior authorizations ahead of visits
- Coding review and claim scrubbing before submission
- Denial management and appeals
- Patient statements and support
- Regular reporting (bi-weekly or monthly, depending on the service)
Why small practices outsource specifically
A solo or small-group practice rarely has the volume to justify a dedicated in-house billing specialist for every part of the revenue cycle — credentialing, coding, denials, and collections each take real expertise. Outsourcing gives a small practice access to that same specialist depth a larger group would hire for, without the overhead of several full-time salaries. It also removes the single-point-of-failure risk: when one in-house biller is out sick or leaves, a billing service keeps working the account. See how GEO works with different practice sizes.
Where outsourcing isn't the right fit
Outsourcing isn't automatically better. A practice with an experienced, stable in-house team and strong processes may already be running billing well. The honest way to decide is to look at your numbers first: your denial rate, how much AR sits over 90 days, and how much staff time goes to billing versus patient care. This comparison breaks that decision down in more detail.
How to evaluate a billing service
- Ask for their average days in AR and denial rate across similar practices, not just claims-submitted volume
- Confirm they have experience with your specialty's coding and payer rules
- Ask how often you'll get reports, and whether a call is included to walk through them
- Confirm they'll sign a BAA and ask how they handle access to your systems — HIPAA and data security should have a specific answer, not a general one
- Ask what the transition looks like for claims and AR already in progress
Switching without losing what's already in your AR
The biggest risk in switching billing services isn't the new team — it's what happens to claims and AR already open with the old one. A good transition plan tracks every open claim through to resolution rather than treating the switch date as a clean cutoff. Here's what that transition should look like.
If you're not sure where your practice stands today, a billing audit reviews your claims, denials, and AR before you make any change, so the decision is based on your actual numbers.
Frequently asked questions
Usually yes — low volume means staff time on billing is proportionally more expensive, and a billing service's cost model (often percentage-of-collections) scales with the practice.