Over the past several weeks, I have spoken with several independent physician practices throughout Southeast Michigan. While practices appreciate receiving advance notice of these changes, many have expressed uncertainty regarding implementation timelines, enrollment requirements, staffing implications, and the potential financial impact of transitioning practitioners to direct billing.
The questions physicians are asking deserve thoughtful discussion and practical guidance.
Why This Matters
For decades, the “incident-to” billing model has been a cornerstone of the independent practice workflow. It allowed physicians to extend their reach through mid-level providers—Physician Assistants (PAs) and Nurse Practitioners (NPs)—while maintaining a unified billing structure under the physician’s National Provider Identifier (NPI). However, Blue Cross Blue Shield of Michigan (BCBSM) is fundamentally restructuring this landscape.
Revenue loss often happens quietly. When policy shifts occur, they rarely announce themselves with a single catastrophic event. Instead, they manifest as incremental decreases in reimbursement, lost incentive payments, and administrative friction that slows the revenue cycle.
For many independent practices, the shift away from incident-to billing may have meaningful financial and operational implications if not carefully planned. This is more than a coding change—it represents a shift in how services performed by advanced practice providers are reported, reimbursed, and incorporated into the overall revenue cycle.
What Is Changing: Phase 1
September 1, 2026 – February 28, 2027
The transition begins with a shift in reporting requirements and the immediate removal of financial incentives for specific claim types. During Phase 1, the primary focus is on identification and transparency.
Mandatory SA Modifier
All claims for services delivered by a supervised clinician (PAs, NPs, or limited license clinicians) and billed incident-to a supervising physician must include the SA modifier. This modifier signals to the payer that while the physician is the billing entity, the service was physically performed by a mid-level provider.
Removal of Value-Based Reimbursement (VBR)
This is perhaps the most immediate financial impact for many high-performing practices. Claims submitted with the SA modifier will no longer qualify for Value-Based Reimbursement (VBR) or Physician Group Incentive Program (PGIP) incentives.
Practices that rely on these incentives to offset rising overhead costs will see a direct reduction in net revenue for those specific services. During this six-month window, the base reimbursement remains at the physician’s fee schedule, but the loss of the VBR incentive starts the clock on the financial transition.
What Is Changing: Phase 2
March 1, 2027 – Onward
Phase 2 introduces the hard transition. At this stage, the administrative burden and financial penalties for continuing the traditional incident-to model become more significant.
Direct NPI Billing Requirement
BCBSM will require all clinicians eligible for direct participation—including NPs, PAs, and fully licensed mental health clinicians—to bill under their own individual NPI. This ends the practice of bundling these services under the physician’s identifier for commercial plans.
The 80% Reimbursement Ceiling
If an eligible provider continues to bill incident-to using the SA modifier instead of their own NPI after March 1, 2027, reimbursement will be capped at 80% of the professional fee schedule allowed amount.
Permanent Loss of VBR
These incident-to claims will remain ineligible for value-based incentives, creating a double financial impact:
- 20% reduction in base reimbursement.
- 100% loss of VBR and PGIP incentive opportunities.
Which Practitioners Are Affected?
Eligible for Direct Enrollment
The following providers should enroll directly with BCBSM:
- Nurse Practitioners (NPs)
- Physician Assistants (PAs)
- Fully Licensed Mental Health Clinicians
By joining the PGIP program under their own NPI, these providers can begin earning their own Value-Based Reimbursement (VBR), helping offset the financial impact of moving away from physician-based billing.
Loss of Incident-to Eligibility in Office Settings
Beginning March 1, 2027, office-based incident-to billing will no longer be reimbursed for:
- Students and trainees
- Physicians in graduate medical education programs
- Limited Licensed Social Workers (LLMSW)
- Limited Licensed Professional Counselors (LLPC)
- Limited Licensed Marriage and Family Therapists (LLMFT)
- Provisional-license providers
These individuals may continue incident-to billing only in facility-based settings, such as psychiatric hospitals or Federally Qualified Health Centers (FQHCs). Independent private practices should reevaluate how residents and trainees are incorporated into patient care workflows.
What Physicians Should Begin Doing Now
Waiting until the end of 2026 to react is a high-risk strategy. Preparation should begin immediately to ensure a seamless transition and protect accounts receivable from preventable disruptions.
- Audit Your Provider Roster
Identify every provider currently billing incident-to. Verify licensure status and BCBSM enrollment. - Initiate Credentialing Immediately
The credentialing process takes time. Ensure all eligible NPs and PAs complete enrollment and CAQH attestation before February 28, 2027. - Update EMR and Billing Systems
Ensure your systems can append the SA modifier beginning September 1, 2026, and transition claims to each provider’s individual NPI by March 2027. - Perform Financial Impact Modeling
Review current incident-to claim volume and estimate the combined impact of the 20% reimbursement reduction and loss of VBR incentives. - Monitor Recoupments and Denials
Watch for retroactive disenrollments and unexpected denials. A proactive appeals process will help reduce unnecessary revenue loss.
Questions Practices Should Be Asking
As implementation dates approach, leadership teams should discuss the following:
- How much of our current revenue comes from VBR on incident-to claims?
- Are our mid-level providers prepared for their new responsibilities within the PGIP program?
- Do we have a 90-day contingency plan for providers joining from out of state or another practice?
- Is our front-office team trained to capture the correct rendering provider at the point of service?
Note: BCBSM allows a 90-day transition period for eligible providers transferring from another practice or state; however, the 80% reimbursement rule still applies after March 1, 2027.
Closing Thoughts
The landscape of independent practice is shifting, and the incident-to model as we know it is evolving into a system that demands greater transparency and individual accountability.
While changes of this magnitude may create understandable concerns regarding the financial health of physician practices, early education and strategic preparation can help organizations remain focused on delivering exceptional patient care.
Independent physician practices continue to face increasing administrative and reimbursement challenges. As these changes evolve, ongoing communication among payers, medical societies, and physician practices will be essential to ensure providers have the information they need to prepare successfully.
By Etta Grandberry, MBA, MSA, CPC, CPB
Owner, Automated Medical Claims, Inc.
