How to switch medical billing companies in 10 steps

Switching medical billing companies comes down to ten steps: assess your current setup, review your data, review open A/R, confirm credentialing, configure your EHR, set up payer connections (clearinghouse, ERA and EFT), map workflows, tell your staff, manage the transition with your old vendor, and monitor results. You don't need to start over. Your EHR, your payer contracts, your provider enrollments and your patient accounts stay where they are. What changes is who does the work and how claims and remittances are routed. The risk in a switch sits in the handoff, so most of this guide is about making sure no claim falls between the two teams.

Plan for the switch to take several weeks from decision to full handoff, depending on your notice period and how quickly payer enrollments are processed. The steps below can overlap.

The 10 steps at a glance

Step 1: Initial assessment

Write down why you are switching and what you want to improve: slow payments, rising denials, poor reporting, lack of response, or scope gaps such as credentialing. Then capture a baseline from your current reports: monthly collections, days in A/R, A/R over 90 days, denial rate and charge lag. You will compare against these numbers later.

Read your current contract before you give notice. Note the notice period, any termination fee, whether there is a run-out clause for claims already in process, and what the vendor must return when the relationship ends.

Step 2: Data review

List what you need from your current setup and confirm you can get it. That usually includes aging reports by payer, a list of unbilled or held charges, open denials, payment history summaries, fee schedules, payer contracts and any credentialing files. Confirm who owns and controls your practice management system. If the system is licensed in your practice's name, your data stays with you. If your current vendor hosts the system under its own license, ask now how and when you can get a full export.

Step 3: A/R review

Break open A/R into groups by payer and age, and flag claims close to a timely filing limit. Then decide who works what. A common approach: the outgoing vendor keeps working claims with dates of service before an agreed cutoff during a run-out period, and the new vendor takes everything after it. Some practices instead hand aged A/R to the new team at the start. Either way, write the split down so both teams do not call the same payer about the same claim, and so no claim is left with nobody. Our guide on timely filing limits by payer helps you spot claims that cannot wait, and our A/R recovery services cover older balances.

Step 4: Credentialing review

A switch is a good time to confirm that every provider is enrolled correctly. For each provider and payer, check enrollment status, effective date, the group and individual NPIs on file, and any reassignment of benefits to the group. Make sure CAQH profiles are current and attested (CAQH asks for re-attestation every 120 days), and note upcoming Medicare revalidation dates in PECOS. Gaps found here explain many denials that look like billing errors. See our credentialing services for help with this review.

Step 5: EHR configuration

Create user accounts in your EHR and PM system for the new billing team, with the access level they need. Because you create the accounts, you can also remove them. Confirm provider and location setup, the payer list and payer IDs, fee schedules, place of service and billing rules, and patient statement settings. Small setup errors, such as the wrong billing NPI or taxonomy code, can cause a batch of rejections on the first claims, so review them before go-live.

Step 6: Payer setup (clearinghouse, ERA and EFT)

If the new vendor uses a different clearinghouse, it needs to be enrolled to send claims for your providers. Medicare and many Medicaid programs require EDI enrollment paperwork with your Medicare Administrative Contractor (MAC) or state program, signed by the practice.

ERA (835) enrollment deserves careful timing. Many payers send electronic remittances to only one destination for a given tax ID or NPI, so moving ERAs to the new clearinghouse can stop the old vendor's ERA feed. Agree on the switch date, and make sure the old vendor can still see payments for its run-out claims, either through paper EOBs, payer portals or reports you share.

EFT payments go to your bank account, not to the billing company, so they usually do not change in a switch. If you are also changing bank accounts, Medicare uses the CMS-588 form and other payers use their own EFT enrollment, often through a payer portal or an enrollment service. Finally, set up payer portal access for the new team.

Step 7: Workflow mapping

Write down who does each task once the new team starts. Typical items: eligibility checks, prior authorizations, charge entry or charge review, how coding questions go back to providers, how quickly notes are expected to be signed, patient statements, payment collection at the front desk, refunds and credit balances, and how the two teams communicate day to day. Gaps usually appear where the old vendor did something informally that nobody wrote down.

Step 8: Staff communication

Tell your staff early and explain what changes for them. Give them the new contact names, the process for billing questions, and any changes to their own tasks. If the phone number on patient statements is changing, make sure the front desk knows, since patients often call the office first with billing questions.

Step 9: Transition with your current vendor

Give written notice according to your contract and confirm the cutoff date in writing. Agree on the run-out: which dates of service the outgoing vendor will keep working, for how long, and how that work is paid. Request final reports before access ends: aging by payer, open denials, unbilled charges, and a summary of claims in appeal. After the run-out period, remove the old vendor's access to your EHR, clearinghouse and payer portals, and reconcile what is left.

Step 10: Monitoring

Watch the first 90 days closely. Compare weekly claim submission volume with your usual volume, check that rejections are being fixed quickly, confirm ERAs are arriving for the new clearinghouse, and track payments against the baseline from step 1. Some payment timing shifts are normal during a switch while enrollments update. Ask the new vendor for a short weekly check-in during the first month, then move to a monthly review.

Common mistakes to avoid

• Giving notice before reading the run-out and data return terms
• Moving ERAs without telling the outgoing vendor how it will see payments
• Leaving old vendor access active long after the run-out ends
• Skipping the credentialing review and inheriting enrollment problems
• Not recording a baseline, which makes it hard to judge the new vendor fairly

How SFA can help

SFA works inside your existing EHR, so there is no system change, and we can typically begin within 24 hours of receiving system access. We help with clearinghouse and ERA setup, the A/R and credentialing review, and the handoff with your current vendor as part of our medical billing and revenue cycle management services. Service is month-to-month with 60 days' written notice, and a free practice audit is a good place to start.

Frequently asked questions

Do I need to change my EHR to switch billing companies?

Not necessarily. Many billing companies, including SFA, work inside the practice's existing EHR and PM system. Ask any vendor you consider whether a system change is required before you sign.

Who works my old claims after I switch?

It depends on your contract and the plan you agree on. A common approach is a run-out period where the outgoing vendor keeps working claims for dates of service before the cutoff, while the new vendor handles everything after it. Put the split in writing.

Will my payments stop during a billing company switch?

Payments go to your bank account through EFT, so they do not normally stop. Some timing shifts can happen while clearinghouse and ERA enrollments update, which is why the first 90 days should be monitored closely.