Michigan lawmakers are moving to overhaul health care provider credentialing timelines—and insurers, hospitals, and clinicians should be paying close attention.
House Bill 5512 proposes clear statutory deadlines, reimbursement protections, and transparency requirements that could significantly reduce credentialing delays across the state.
Below, we break down what HB 5512 does, why it matters, and how providers and payers should prepare.
What Is Michigan House Bill 5512?
House Bill 5512 would amend Michigan’s Insurance Code to add Section 3406uu, establishing mandatory timelines and procedural rules for health care provider credentialing by insurers.
The bill applies to insurers that deliver, issue, or renew health insurance policies in Michigan and governs how they must process provider credentialing applications.
Key Credentialing Requirements Under HB 5512
- Acknowledgment Within 7 Days
Insurers must provide written or electronic confirmation within 7 calendar days of receiving a credentialing application, including contact information for the individual reviewing it.
Why it matters:
This eliminates “black hole” applications where providers wait weeks—or months—without any confirmation.
- Insurers May Not Reject Applications Due to Network Saturation
HB 5512 explicitly prohibits insurers from denying credentialing applications simply because they claim “no additional providers are needed.”
Why it matters:
This provision limits insurers’ ability to restrict network access through informal or opaque gatekeeping.
- Incomplete Application Rules and Timelines
If an application is incomplete, insurers must notify the provider within 30 days, specifying exactly what information is missing.
Providers then have 30 days to submit the missing materials, or the credentialing clock restarts.
- Credentialing Must Be Completed Within 60 Days
Insurers must complete credentialing within 60 calendar days of receiving an application, excluding pauses caused by incomplete submissions .
At the end of the process, insurers must issue formal written or electronic notice of approval or denial.
- Retroactive Reimbursement Protection
If a provider becomes credentialed and has a fully executed contract in place, insurers must reimburse covered services retroactive to the date the completed application was received, unless federal law preempts it.
Why it matters:
This provision directly addresses revenue loss caused by credentialing delays—one of the most common provider complaints.
Who Is Covered by the Bill?
HB 5512 applies to:
- Physicians
- Advanced practice providers
- Other licensed health care professionals
- Any provider seeking participation in one or more insurer networks
The bill also provides precise statutory definitions for application, completed credentialing application, and credentialing to reduce ambiguity and disputes.
When Would HB 5512 Take Effect?
The bill includes a tie-bar provision, meaning it will not take effect unless related legislation—Senate Bill S03922’25 or House Bill 5513—is also enacted into law.
What Providers and Insurers Should Do Now
For Providers
- Tighten credentialing documentation workflows
- Track submission dates carefully
- Preserve proof of completed application delivery
For Insurers
- Review credentialing policies for timeline compliance
- Update internal escalation and notification processes
- Prepare for retroactive reimbursement exposure
Why This Bill Matters
If enacted, HB 5512 would place Michigan among states taking aggressive statutory action against credentialing delays, shifting leverage toward providers while increasing operational accountability for insurers.
Credentialing has long been a hidden friction point in health care contracting. This bill brings it into the daylight—with deadlines.
