Quick answer: Most practices that switch billing companies lose 6–14% of revenue during the transition — not because the new biller is worse, but because the handoff was structured incorrectly. A clean switch takes two to four weeks of setup, a written AR agreement with the old biller, and verified system access before the cut-off date. Done right, claims keep moving throughout with no revenue gap.
Most practices that switch medical billing companies lose revenue during the transition. Industry data puts the figure at 6–14% of collections over the switch period. That loss almost never happens because the new billing company is worse — it happens because open claims fall through the cracks, credentialing is not transferred cleanly, and nobody is clearly responsible for aging AR from the previous biller.
This guide covers the correct way to structure a billing company switch so that claims keep moving and the transition causes the minimum possible disruption to your cash flow.
Before notifying your current billing company or signing anything with a new one, pull your current performance metrics. You need a baseline to measure whether the new biller is actually performing better — and to hold your current biller accountable during the wind-down period.
Understanding where revenue is typically lost helps you know what metrics to demand. Read our guide on the 7 silent revenue drains in medical billing.
The cut-off date is the date your new billing company takes responsibility for claims going forward. Claims submitted before the cut-off remain with the old biller for follow-up and collection. Claims from the cut-off date onward go to the new biller.
Cut-off date should be set 2–4 weeks after signing — not the same week.
That two-to-four-week window gives the new biller time to configure payer accounts, verify NPI and taxonomy enrollment, load fee schedules and authorization data, confirm system access to your EHR, and run test claims before going live. Practices that set an immediate cut-off date are the ones that experience revenue gaps.
When you give notice to your current billing company, you need a written agreement on what happens to open claims. You have two options:
Do not accept a verbal agreement on AR responsibility. Claims worth tens of thousands of dollars can fall into an unclaimed gap between two billing companies if ownership is not documented in writing before notice is given.
Your billing data belongs to your practice. Before giving notice, confirm in writing that all claim history, EOBs, ERA files, denial records, and patient payment histories are exportable in full. Some billing companies create friction around data export at termination — address this before they have a reason to.
Simultaneously, grant system access to the new biller — admin-level access to your EHR billing modules, clearinghouse credentials, and fee schedule upload access. Verify access is working and a test claim can be submitted before the cut-off date. Do not assume configuration is correct; confirm it.
Credentialing — your providers' enrollment status with payers — is the most overlooked part of a billing switch. Before the handoff, confirm: every provider is actively enrolled with every payer they bill under, no revalidation deadlines fall within the transition window, CAQH profiles are current, and any new locations or telehealth service sites are enrolled.
A credentialing lapse that goes undetected during a billing switch takes 60 to 120 days to correct — during which every claim to the affected payer is denied. That is a preventable loss that your new biller should be auditing for during onboarding.
For a complete breakdown of how credentialing lapses occur and what they cost, read our guide: Credentialing Lapses Are Costing Practices Up to $95,000 a Year.
Within 30 to 45 days of the cut-off date, your new billing company should provide a full performance report: claims submitted, clean claim rate, payments received, denials by reason, and days in AR. Compare against the baseline you pulled in Step 1.
A billing company that does not offer transparent monthly reporting on specific metrics is a billing company you cannot hold accountable. That absence should be a disqualifying factor when evaluating who to switch to — before you sign, not after.
A properly managed transition takes two to four weeks from signing to the cut-off date, with AR wind-down from the previous biller taking 60 to 90 days after. Total clock time from decision to fully settled transition: approximately three months.
Practices that rush the transition or fail to agree on AR responsibility in writing lose 6–14% of revenue during the switch period. A structured transition with a clear cut-off date, written AR agreements, and verified system access before go-live avoids most of that loss.
A properly managed transition takes two to four weeks from signing to the cut-off date. Full AR settlement from the previous biller typically takes 60 to 90 days after. Total timeline from decision to settled transition is approximately three months.
Your old billing company. Open claims submitted before the cut-off date remain their responsibility for follow-up and collection until paid or resolved. This must be confirmed in writing before you give notice.
Yes. A billing company switch does not require an EHR switch. Your new biller should be able to work inside whatever practice management system you already use. Vector MB works inside Athenahealth, eClinicalWorks, Tebra, AdvancedMD, DrChrono, and most other major platforms.
Switching billing companies? Start with a free audit of your current numbers.
Vector MB manages the full transition — AR transfer, credentialing audit, and parallel claim monitoring — with no setup fee and no long-term contract. Find out what your current billing is actually producing before you commit to anything. Learn about our AR management services.
