Switching billing companies is one of the highest-risk operational transitions a medical practice can make. Done wrong, it creates cash flow gaps, lost claims, credentialing failures, and HIPAA exposure. Done right — with the right preparation and the right timeline — it's a clean handoff that improves your revenue cycle immediately. This playbook gives you everything you need to do it right.
Financial trigger benchmark: A practice collecting $2M/year with a 90% net collection rate (vs. 96% top quartile) is leaving $120,000/year on the table. That's the most compelling reason to switch — and the benchmark to hold your new vendor to.
1. Why Practices Switch — The 10 Most Common Triggers
- Denial rate creep — Denial rate exceeds 8–10% consistently for 2+ quarters despite discussion. HFMA MAP target is <5%.
- Days in AR deterioration — AR climbing above 45–50 days without explanation or corrective plan
- Net Collection Rate decline — NCR dropping below 92–93% for 2+ consecutive quarters
- Communication failure — No regular reporting, no proactive alerts on payer issues, unanswered questions for 1+ weeks
- Lack of transparency — Unable to get AR aging reports, denial logs, or claim-level detail on demand
- Technology incompatibility — Billing system doesn't integrate with your EHR; manual workarounds create errors
- Credentialing neglect — Enrollment lapses, delayed re-credentialing causing claim interruptions
- Staff turnover at vendor — Account loses its dedicated team; institutional knowledge disappears
- Hidden fees expanding — Unexpected charges for appeal work, credentialing, or additional services
- Practice growth outpacing vendor capacity — Vendor built for small practices; you've added providers and specialties
2. Contract Exit Clauses — What to Look For
| Clause | Industry Standard | What to Demand | Red Flag |
|---|
| Notice period | 30–90 days written notice | 30-day notice with performance-based exit clause | >90 days with no performance-based exit |
| Data ownership | Your data belongs to you | All data in standard format within 10 business days of notice | Data release tied to disputed invoice resolution |
| Transition assistance | Outgoing vendor works pre-cutover claims 60–90 days | Monthly AR reports during wind-down in writing | Vendor stops processing immediately upon notice |
| Final reconciliation | Written reconciliation within 30 days of last claim worked | All amounts billed vs. collected vs. written off | No defined reconciliation process |
| HIPAA BAA | BAA remains in effect until PHI returned/destroyed | Written confirmation of PHI disposition (45 CFR §164.504) | No BAA, or BAA not covering subcontractors |
| Fee on termination | No termination fee (rare but exists) | No penalty for early termination if KPIs not met | Termination fee >1 month of billing fees |
3. Data to Demand Before You Leave
Request all of the following in writing within 10 business days of providing notice. Do not proceed past Week 4 of your timeline without these items.
Full AR Aging Report — by payer, by DOS bucket (0–30, 31–60, 61–90, 91–120, 120+ days), patient/claim level detail
Open Claims List — every unresolved claim: payer, DOS, CPT codes, billed amount, status, last action date
EOBs/ERAs for last 12 months — 835 electronic files preferred; paper copies for any manual checks
Denial Log — all denied claims for prior 6 months: CARC code, payer, DOS, denial date, action taken, status
Credentialing Files — CAQH profile login, payer enrollment letters, effective dates, PTAN numbers, group enrollment documents
Re-credentialing Calendar — every provider's expiration dates, open applications, pending renewals
Fee Schedules — contracted fee schedule for every payer currently in effect
Clearinghouse Submission History — or login access if you're retaining the same clearinghouse
PM System Data Export — all patient demographics, insurance, charge history in exportable format
Write-Off Log — all adjustments and write-offs with reason codes during the engagement
4. 8-Week Transition Timeline
Weeks 1–2: Evaluation & Notice
Select new vendor and deliver formal notice
- Select new billing vendor; execute contract including HIPAA BAA
- Deliver formal written termination notice to outgoing vendor (certified mail or email with read receipt)
- Request all 10 data items from Section 3 immediately upon notice
- Pull current AR aging, denial rate, NCR as your baseline — you'll measure the new vendor against this
- Identify all open prior authorizations — document auth numbers, expiration dates, provider NPIs
- Identify all credentialing renewal dates coming in the next 6 months
- Confirm outgoing vendor's CAQH login — get your own login before transition (not vendor's login)
Weeks 3–4: Data Transfer & Setup
New vendor setup — credentialing is the critical path item
- Begin payer credentialing/enrollment updates immediately — this is the longest lead-time item (30–120 days per payer)
- Receive and validate AR aging and open claims data from outgoing vendor
- New vendor begins EHR/PM system integration and setup
- Transfer or re-establish clearinghouse connections; test claim submission with a small batch
- Load fee schedules into new billing system
- Confirm all provider NPIs are active in NPPES; reactivate any inactive NPIs
- Submit EFT re-routing requests to all payers — this takes 30–90 days per payer; start now
- Verify CAQH attestation is current for all providers (must be completed every 120 days)
Weeks 5–6: Parallel Run Initiation
Cutover date established — new vendor handles all new claims
- Establish cutover date (first business day of new calendar month is cleanest)
- New vendor handles all charges from cutover date forward
- Get in writing: outgoing vendor continues working all pre-cutover DOS claims for 60–90 days
- Monitor new vendor's first submissions daily: date-of-service to submission lag (target: <48 hours)
- Confirm EFT/ERA routing is correct with each payer for new vendor — verify in provider portals
- Reconcile first week's charges with new vendor against your internal charge capture
- Require outgoing vendor to submit weekly status report on pre-cutover open claims
Weeks 7–8: Stabilization & Monitoring
Daily review, performance baseline, 30-day check-in
- Daily claim submission review for the first 14 days from new vendor
- Track denial rate on new submissions vs. baseline (expect initial uptick as vendor learns your patterns)
- Confirm outgoing vendor is actively working aged AR (require bi-weekly status report)
- First denial analysis meeting with new vendor: identify early patterns by CARC code
- Confirm patient statement process is uninterrupted — no billing gap for patient responsibility
- Outgoing vendor BAA: confirm it remains in effect until all PHI returned/destroyed
- 30-day check-in: compare Days in AR, denial rate, and clean claim rate against pre-transition baseline
- Identify any claims in mid-adjudication or active appeal — confirm ownership and follow-up responsibility
5. Credentialing Continuity — What Breaks & How to Prevent It
| What Breaks | Why It Happens | Prevention |
|---|
| EFT re-routing | Payments continue going to old vendor's bank for 30–90 days per payer | Submit EFT re-routing to all payers in Week 3–4; verify in each payer's provider portal |
| ERA (835) delivery | Remittances go to old vendor's clearinghouse; new vendor doesn't see payments | Update ERA routing at same time as EFT; confirm with clearinghouse |
| CAQH attestation lapses | If outgoing vendor managed CAQH, providers may miss the 120-day window | Reassign CAQH access to your own login before transition begins |
| Group NPI enrollment issues | If billing under old vendor's group NPI, re-enrollment under new entity takes 30–120 days | Continue billing under existing NPIs where possible; avoid group NPI changes unless necessary |
| PA linkage breaks | PAs approved under old group NPI may not transfer to new billing entity | Document all open PAs before cutover; verify with each payer whether PAs transfer |
| Medicare PECOS delays | 855B/855I updates take 30–60 days to process | Submit Medicare updates in Week 3 — do not wait for cutover date |
6. Red Flags — Outgoing Vendor Behavior to Watch For
- ⚠
Delaying data delivery — AR aging and open claims not provided within 10 business days of notice
- ⚠
Slowing claim submissions — submission volumes drop after notice; this weaponizes your AR
- ⚠
Accelerating write-offs — unusual spike in write-offs immediately after notice to reduce apparent AR balance
- ⚠
Restricting portal access — blocking your staff from accessing PM system or reports
- ⚠
Making data export contingent on payment disputes — "We'll release your data once you pay the disputed invoice"
- ⚠
Claiming they "own" your CAQH or payer enrollment records — they do not. Those records belong to you.
- ⚠
Going silent on open claims — no status updates, outbound calls stop on aged AR
- ⚠
Sending incomplete AR reports — aging reports that exclude claims in dispute or under appeal
Legal note: These behaviors may violate your BAA (HIPAA), your service agreement, and in some cases state healthcare billing regulations. Document everything in writing.
7. Questions to Ask a New Billing Company Before Signing
Performance
- What is your average net collection rate across your current client base? (Demand: >95%)
- What is your average initial denial rate? (Demand: <5%)
- What is your average Days in AR across clients? (Demand: <40 days)
- What is your first-pass resolution rate? (Demand: >92%)
- What is your average clean claim rate? (Demand: >95%)
- Can you provide 3 client references in my specialty with similar practice size? (Demand actual phone numbers — not testimonials)
Operations & Staffing
- Will I have a dedicated account manager and dedicated billing staff, or a pooled team?
- What is your biller-to-practice ratio? (Red flag: >20 practices per biller)
- What credentials do your billing staff hold? (CPC, CCS, RMC certifications? Specialty-specific training?)
- What is your staff turnover rate? (Red flag: >30% annually)
- Where is your billing staff located? (Onshore, offshore, or hybrid? HIPAA and communication implications?)
Technology
- What EHR systems do you integrate with natively? What is the integration method — API or manual entry?
- Do you use a claim scrubber? Which one? What edit libraries?
- What clearinghouse do you use? (Availity, Waystar, Change Healthcare, TriZetto?)
- What reporting do I receive and on what cadence? Do I have 24/7 portal access to my data?
Compliance & Legal
- Has your company ever been investigated by OIG, CMS, or a state agency? (Non-negotiable: must disclose)
- Do you screen employees against the OIG Exclusions List? What is your process?
- Do you carry E&O (Errors and Omissions) insurance? What is the coverage amount?
- What does your HIPAA compliance program include? When was your last HIPAA risk assessment?
Commercial Terms
- What is your fee structure — percentage of net collections, per-claim flat fee, or hourly?
- What services are NOT included in your base fee? (Credentialing? Appeals beyond first resubmission? Patient statements? Reporting?)
- What is your contract notice period for termination? (Demand: ≤60 days with performance-based exit clause)
- Who owns my data? In what format and within what timeframe after termination? (Demand: 10 business days, standard export)
- Do you provide a written Service Level Agreement with guaranteed KPI metrics?
- What is your process when you make a billing error that results in a denial or overpayment? Who bears the correction cost?
Not Sure Whether to Switch or Stay? Get an Independent RCM Audit First
A free 15-minute RCM audit gives you a performance baseline — denial rate, Days in AR, net collection rate — against 2026 benchmarks. Know exactly what you're working with before you decide.
Book Your Free RCM Audit →