Michigan Medicaid entered 2026 with two major developments that directly affect how providers bill and credential in the state. First, the MICH (Mi Coordinated Health) program — Michigan’s new Highly Integrated Dual Eligible Special Needs Plan — launched January 1, 2026, creating a new billing pathway for Michigan’s Medicare-Medicaid dual-eligible population across most of the state. Second, MDHHS overhauled the CHAMPS prior authorization system effective March 22, 2026, introducing new 7-day and 72-hour determination timelines that change how providers must manage authorization workflows.

Beyond these 2026 launches, Michigan’s Medicaid billing structure carries a complexity that catches many out-of-state practices and telehealth providers off guard: the three-track enrollment architecture. Enrolling in CHAMPS (Michigan’s Medicaid claims system) is not the same as being authorized to bill Medicaid Health Plans. And contracting with Medicaid Health Plans is a separate process from both. Getting the sequence wrong means claims are denied even for providers who believe they are fully enrolled.

Michigan Medicaid covers approximately 2.6 million Michigan residents — roughly one in four people in the state — through MDHHS. With over a dozen active Managed Care Organizations across different programs and geographic regions, Michigan is one of the most MCO-diverse Medicaid markets in the country.

This guide covers everything Michigan providers need to know about medical billing, coding, and credentialing in 2026.

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Part 1: Michigan Medicaid Programs — What Providers Need to Know

Michigan FamilyCare — The Primary Managed Care Program

Michigan FamilyCare is Michigan’s primary Medicaid managed care program, serving approximately 1.7 million Medicaid beneficiaries through a network of contracted Medicaid Health Plans (MHPs). Nearly all Michigan FamilyCare beneficiaries receive their care through an MHP — fee-for-service Medicaid covers a small subset of the population.

Michigan FamilyCare covers children, pregnant women, families, and low-income adults who qualify for traditional Medicaid. Michigan is organized into 10 geographic regions for MHP contracting purposes, and the plans available to patients vary by region. A plan that operates in Detroit may not operate in the Upper Peninsula.

Active Michigan FamilyCare MHPs as of 2026:

MHP	Phone	Coverage Area
Aetna Better Health of Michigan	866-316-3784	Select regions
AmeriHealth Caritas Michigan	Available via portal	Select regions
Blue Cross Complete of Michigan	Available via portal	Statewide (most regions)
HAP CareSource	833-230-2053	Southeast Michigan / Detroit area
Humana Healthy Horizons Michigan	Available via portal	Select regions
McLaren Health Plan	888-327-0671	Central and North Michigan
Meridian Health Plan of Michigan (Wellcare-Meridian)	888-437-0606	Statewide
Molina Healthcare of Michigan	888-898-7969	Most regions (see 2026 county changes)
Priority Health Choice	Available via portal	Select regions
UnitedHealthcare Community Plan Michigan	800-903-5253	Statewide
Upper Peninsula Health Plan (UPHP)	Available via portal	Upper Peninsula only (see 2026 county changes)

⚠️ Always verify payer IDs with your clearinghouse before submitting to any Michigan MHP. Payer IDs vary by clearinghouse platform. Confirm the correct payer ID for each MHP on your specific clearinghouse before the first submission.

Healthy Michigan Plan (HMP) — Medicaid Expansion

The Healthy Michigan Plan is Michigan’s Medicaid expansion program for low-income adults:

• Covers adults aged 19–64 with income up to 138% of the Federal Poverty Level (~$1,835/month for a single person in 2026)
• No asset test required
• Approximately 750,000 members as of 2026 (following completion of the post-COVID enrollment unwinding)
• Healthy Behaviors incentive model: HMP members can reduce their copayments by completing certain health activities (smoking cessation, diabetes education, annual wellness visit). No penalty applies for non-completion, but practices treating HMP patients should be aware that copay amounts may vary based on member behavior status.
• MI Health Account premiums no longer collected — this cost-sharing requirement was eliminated as part of Michigan’s Medicaid unwinding process

⚠️ HMP Work Requirements Coming January 1, 2027: Per the federal OBBBA legislation, MDHHS will begin outreach to HMP members about work requirements by September 30, 2026. Work requirements of 80 hours per month take effect January 1, 2027. Pregnant members, medically frail individuals, and those receiving disability benefits are exempt. This is not yet in effect in 2026 but will affect HMP enrollment starting 2027 — practices with high HMP populations should monitor the implementation.

MICH — Mi Coordinated Health (New 2026)

Mi Coordinated Health (MICH) is Michigan’s new Highly Integrated Dual Eligible Special Needs Plan (HIDE-SNP), launched January 1, 2026. MICH integrates Medicare and Medicaid benefits under a single managed care plan for dual-eligible Michigan residents — replacing the prior MI Health Link program in most regions.

2026 MICH regional availability:

MICH launched January 1, 2026 in nine of Michigan’s ten regions. Region 2 (Northwest Michigan) launches January 1, 2027.

Key 2026 MICH county-level changes:

• Upper Peninsula Health Plan (UPHP) — NOT available in Chippewa, Gogebic, or Menominee counties in 2026
• Molina — NOT available in St. Joseph County (Southwest region) in 2026
• Wayne County plans: Aetna, AmeriHealth, HAP CareSource, Priority Health, Humana, Molina, UnitedHealthcare, Wellcare-Meridian
• Macomb County plans: Aetna, AmeriHealth, HAP CareSource, Humana, Molina, Priority Health, UnitedHealthcare, Wellcare-Meridian

MICH billing rules:

• For MICH members: Medicare is integrated into the plan — bill MICH for both Medicare-covered and Medicaid-covered services through the single plan
• Providers must be contracted with the specific MICH plan to bill as in-network
• Prior authorizations and benefit structures may differ from the same plan’s FamilyCare product

MI Choice Waiver and MICHILD

MI Choice Waiver provides home and community-based services (HCBS) for Michigan seniors and physically disabled adults who meet nursing facility level of care. Claims for MI Choice Waiver services go through the member’s waiver management agency, not standard MHP billing.

MICHILD is Michigan’s Children’s Health Insurance Program covering children in families with income up to 212% FPL. MICHILD has its own premium structure and billing requirements separate from standard FamilyCare.

Michigan Behavioral Health — The Carve-Out System

Like Pennsylvania, Michigan has a significant behavioral health carve-out from physical health MHPs. Mental health, substance use disorder, and developmental disability services are administered through:

• 10 Prepaid Inpatient Health Plans (PIHPs) — regional behavioral health managed care organizations covering Michigan’s 83 counties
• Community Mental Health Service Programs (CMHSPs) — local agencies within each PIHP region

For providers delivering behavioral health services to Michigan Medicaid patients, claims do NOT go to the physical health MHP. They go to the PIHP for the patient’s county of residence — an entirely separate organization with its own credentialing, authorization, and billing requirements.

This is one of the most commonly mishandled routing decisions in Michigan Medicaid billing — particularly for practices that provide both physical and behavioral health services.

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Part 2: Michigan’s Three-Track Enrollment Architecture

This is the single most distinctive — and most misunderstood — feature of Michigan Medicaid provider enrollment. Michigan uses a three-track enrollment architecture that is fundamentally different from most other states.

Track A — CHAMPS FFS Enrollment

CHAMPS (Community Health Automated Medicaid Processing System) is Michigan’s Medicaid claims processing platform and the starting point for all provider enrollment.

Track A CHAMPS enrollment:

• Authorizes the provider to bill fee-for-service Medicaid to MDHHS directly
• Is required by federal law under the 21st Century Cures Act for all providers — regardless of whether they plan to bill FFS or only through MHPs
• Does NOT automatically authorize billing through Michigan FamilyCare MHPs

CHAMPS Provider Enrollment Helpline: 1-800-292-2550, option 4

April 16, 2026 MDHHS Reminder: All CHAMPS enrollment changes must be submitted within 35 days or providers risk claim denials and payment impacts. This applies to address changes, ownership changes, new service locations, and any other updates to the enrollment record.

Track B — 21st Century Cures Act Network Compliance Enrollment

Track B enrollment satisfies the 21st Century Cures Act Section 5005 federal requirement for MHP network compliance. It does NOT authorize FFS billing. It is a network participation tracking mechanism used by MHPs to manage their provider directories.

Many providers confuse completing Track B with completing their MHP enrollment — they are not the same. Track B alone does not authorize you to bill any MHP for Medicaid services.

Track C — Medicaid Health Plan Contracting

Track C is the actual process of contracting with each individual Michigan FamilyCare MHP. After completing Track A CHAMPS enrollment:

1. Contact each MHP directly to initiate network participation
2. Complete MHP credentialing (separate from CHAMPS enrollment)
3. Sign a participating provider agreement with each MHP
4. Confirm network activation before submitting the first claim

The critical sequencing rule: Track A CHAMPS enrollment must be completed BEFORE Track C MHP contracting can be completed. MHPs verify CHAMPS enrollment status as part of their credentialing process. Starting MHP contracting before CHAMPS enrollment is active results in delays.

⚠️ CHAMPS enrollment alone does NOT authorize billing through MHPs. A provider who completes Track A but skips Track C is authorized for FFS billing only — not for MHP patients who represent the vast majority of Michigan Medicaid beneficiaries.

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Part 3: 2026 Key Updates Every Michigan Provider Needs to Know

1. MICH Launched January 1, 2026

The new Mi Coordinated Health HIDE-SNP program launched in nine Michigan regions on January 1, 2026. This is the most significant structural change to Michigan’s Medicaid system in recent years for providers treating dual-eligible patients.

Action items for Michigan providers treating dual-eligible patients:

• Identify which patients have transitioned from MI Health Link to MICH
• Confirm your practice is contracted with the relevant MICH plan for your service area
• Understand that MICH integrates Medicare and Medicaid billing — the billing workflow differs from standard MHP + Medicare primary billing

2. CHAMPS Prior Authorization Overhaul — March 22, 2026

Per Policy Bulletin MMP 26-02, MDHHS overhauled the CHAMPS prior authorization screens effective March 22, 2026. New timelines:

• Standard PA determination: 7 calendar days (extendable to 14 days with notification)
• Expedited PA determination: 72 hours

These timelines are now Michigan Medicaid policy for FFS prior authorization. MHP-specific PA timelines may vary — check each MHP’s current authorization requirements.

For practices that previously relied on longer FFS PA processing windows, the new 7-day standard must be built into scheduling workflows. Procedures requiring PA that are scheduled before authorization is confirmed now carry a tighter window for pre-service auth completion.

3. MDHHS April 16, 2026 — CHAMPS Enrollment Update Deadline

MDHHS issued a Provider Enrollment Correspondence Address Reminder on April 16, 2026 confirming that all CHAMPS enrollment changes must be submitted within 35 days. Practices that have had address changes, ownership changes, new providers joining, or new service locations added since their last CHAMPS update should verify their records are current — outdated CHAMPS records lead to claim denials and payment delays.

4. HMP Work Requirements — Outreach Begins September 30, 2026

MDHHS must begin outreach to Healthy Michigan Plan members about upcoming work requirements by September 30, 2026. The 80-hour monthly work requirement takes effect January 1, 2027 under the OBBBA federal legislation. Practices with large HMP patient panels should anticipate:

• Potential HMP disenrollment for members who cannot meet work requirements (starting 2027)
• Increased patient inquiries about HMP eligibility and work requirement exemptions
• Possible patient transitions to uninsured status affecting billing workflows beginning Q1 2027

5. MICH 2026 County-Level Plan Changes

As noted in Part 1, UPHP is not available in three Upper Peninsula counties and Molina is not available in St. Joseph County in 2026. Michigan providers in these specific counties must verify which MICH plans are available for their patients and update credentialing accordingly.

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Part 4: Claim Filing Limits in Michigan

⚠️ Important: Timely filing limits in your specific provider contract govern your actual filing deadline. Always verify in your signed agreement with each payer.

Michigan Medicaid and MHP Timely Filing Limits

Payer	Timely Filing Limit	Notes
Michigan Medicaid FFS (CHAMPS)	12 months from date of service	Applies to FFS population not in managed care
Blue Cross Complete of Michigan	12 months from date of service	Verify with your contract
Meridian Health Plan of Michigan	180 days from date of service	Verify with your contract
Molina Healthcare of Michigan	120 days from date of service	Verify with your contract
Aetna Better Health of Michigan	180 days from date of service	Verify with your contract
UnitedHealthcare Community Plan MI	90–180 days from date of service	Varies by contract — verify
HAP CareSource	90–180 days from date of service	Verify with your contract
McLaren Health Plan (Medicaid)	90–180 days from date of service	Verify with your contract
AmeriHealth Caritas Michigan	180 days from date of service	Verify with your contract
Priority Health Choice (Medicaid)	90–180 days from date of service	Verify with your contract
MICH plans	90–120 days from date of service	MA-aligned timelines apply for MICH

Commercial and Medicare Timely Filing in Michigan

Payer	Timely Filing Limit	Notes
Medicare Part A/B (WPS Jurisdiction 8)	12 months from date of service	WPS Health Solutions is Michigan’s MAC — same as Indiana
Medicare Advantage	90–120 days from date of service	MA plans set own deadlines
Blue Cross Blue Shield of Michigan	365 days from date of service	Dominant commercial carrier; generous filing window
Blue Care Network (BCN)	180 days from date of service	BCBSM HMO subsidiary
Priority Health (commercial)	180 days from date of service	Major regional commercial carrier
HAP (Health Alliance Plan)	180 days from date of service	Detroit area regional plan
McLaren Health Plan (commercial)	90–180 days from date of service	Central/North Michigan
UnitedHealthcare (commercial)	90–180 days from date of service	Varies by employer contract
Aetna (commercial)	120 days from date of service	Verify with your contract
Humana	90 days from date of service	Shortest window — prompt submission required

Michigan MAC — WPS Jurisdiction 8

Michigan shares its Medicare Administrative Contractor with Indiana. WPS Health Solutions processes Medicare Part A and Part B claims for Michigan providers under Jurisdiction 8 (Michigan and Indiana). Michigan providers should use WPS resources at wpsgha.com for Medicare billing guidance.

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Part 5: Commercial Payer Landscape in Michigan

Michigan’s commercial insurance market is distinctive for having strong regional carriers that compete meaningfully with national plans — unlike many states where a single national Blue plan dominates.

Blue Cross Blue Shield of Michigan (BCBSM) — Largest Commercial Carrier

Blue Cross Blue Shield of Michigan is the dominant commercial insurer in the state, with the largest commercial market share across all Michigan regions. BCBSM operates two primary commercial products:

• BCBSM PPO/POS — the standard commercial PPO product
• Blue Care Network (BCN) — BCBSM’s HMO subsidiary

BCBSM also operates Blue Cross Complete of Michigan — its dedicated Medicaid MHP — making BCBSM uniquely present across commercial, Medicaid, and Medicare Advantage markets in Michigan. Any Michigan provider must prioritize BCBSM credentialing above all other commercial carriers.

Priority Health — Major Regional Carrier

Priority Health is a significant regional commercial carrier, particularly in West Michigan (Grand Rapids and surrounding areas). Founded in 1986 by Spectrum Health (now Corewell Health), Priority Health has a strong employer group presence in western Michigan. Priority Health also operates a Medicaid MHP (Priority Health Choice) and a Medicare Advantage product.

HAP — Health Alliance Plan

HAP (Health Alliance Plan) is the commercial insurance arm of Henry Ford Health System, with strong market presence in Southeast Michigan and the Detroit metropolitan area. HAP also operates HAP CareSource in partnership with CareSource for the Medicaid market.

McLaren Health Plan

McLaren Health Plan is a regional carrier associated with the McLaren Health System, with particular strength in Central Michigan (Flint, Saginaw, Bay City, Lansing area) and northern Michigan. McLaren operates both commercial and Medicaid (FamilyCare) products.

Other Major Commercial Payers

• UnitedHealthcare — significant employer-sponsored commercial presence statewide
• Aetna — commercial presence particularly in metropolitan markets
• Cigna — commercial presence in metropolitan areas including Detroit and Grand Rapids
• Humana — strong Medicare Advantage presence, growing commercial footprint
• PHP (Physicians Health Plan of Mid-Michigan) — regional HMO in central Michigan

Regional commercial market notes:

• Detroit (Wayne, Macomb, Oakland counties): BCBSM dominant; HAP and Priority Health significant; strong Medicare Advantage market
• Grand Rapids (Kent County and West Michigan): Priority Health particularly strong; BCBSM significant
• Lansing (Ingham County): BCBSM dominant; McLaren Health Plan presence
• Flint (Genesee County): McLaren Health Plan significant; BCBSM dominant commercial
• Upper Peninsula: BCBSM dominant; UPHP significant for Medicaid; limited plan diversity

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Part 6: Credentialing in Michigan — CHAMPS and MHP Contracting

Step 1 — CHAMPS Enrollment

All providers billing Michigan Medicaid must complete Track A CHAMPS enrollment first.

Portal: michigan.gov/mdhhs — CHAMPS Provider Enrollment Helpline: 1-800-292-2550, option 4

Requirements:

• Active NPI
• Valid Michigan state license
• Federal tax ID (EIN or SSN)
• SIGMA Vendor Self-Service (VSS) account — Michigan’s statewide vendor registration system required before CHAMPS enrollment can be completed
• MiLogin state authentication account

Processing time: 30–60 days for standard applications.

Critical 2026 reminder: All CHAMPS enrollment changes must be submitted within 35 days (April 16, 2026 MDHHS reminder). Update any changes to address, ownership, providers, or service locations promptly.

Step 2 — MHP Credentialing (Track C)

After CHAMPS enrollment is confirmed, contract separately with each MHP:

1. Confirm active CAQH ProView profile — all Michigan MHPs pull credentials from CAQH
2. Submit network participation request through the MHP’s provider portal
3. Complete MHP credentialing (NCQA-aligned, with Primary Source Verification and committee review)
4. Sign participating provider agreement
5. Confirm network activation before submitting first claim

Credentialing timeline: 60 to 120 days per MHP. For a new practice in Michigan needing full MHP network participation, this means planning far ahead — start CHAMPS enrollment at minimum 5–6 months before the intended patient care start date if multiple MHP contracts are needed.

Michigan PIHP Credentialing for Behavioral Health Providers

Behavioral health providers must also credential with their regional PIHP — a completely separate process from physical health MHP credentialing. Michigan has 10 PIHPs covering all 83 counties. Contact the PIHP for your service area directly to initiate behavioral health network participation.

Michigan State Licensing

• Physicians (MD/DO): Michigan Board of Medicine — lara.michigan.gov
• Nurse Practitioners: Michigan Board of Nursing — lara.michigan.gov
• Physician Assistants: Michigan Board of Medicine
• All other licensed providers: Michigan Department of Licensing and Regulatory Affairs (LARA) — lara.michigan.gov

Michigan physician licenses renew on a biennial (2-year) cycle. Build renewal reminders at least 90 days before expiration.

Michigan Credentialing Timeline

Payer / Enrollment	Typical Timeline
CHAMPS enrollment (Track A)	30–60 days
MHP credentialing (each)	60–120 days after CHAMPS
PIHP credentialing (behavioral health)	60–90 days (separate from MHP)
BCBSM (commercial)	60–90 days
Priority Health (commercial)	60–90 days
UnitedHealthcare / Aetna / Humana	90–120 days
Medicare PECOS (WPS Jurisdiction 8)	60–90 days

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What Michigan Providers Should Do Right Now

For MICH and dual-eligible patients:

• Identify Michigan patients who have transitioned from MI Health Link to MICH as of January 1, 2026
• Confirm your practice is contracted with the relevant MICH plan for your service area (check county-level availability)
• If you are in St. Joseph County or the three UPHP UP counties — confirm which MICH plans are available and credential accordingly

For CHAMPS and MHP enrollment:

• Verify your CHAMPS enrollment record is current — confirm address, active providers, and service locations are accurate per the April 16, 2026 35-day update requirement
• Confirm all rendering providers in your practice have completed CHAMPS Track A enrollment before any MHP contracting begins
• Build the Track A → Track C sequencing into your new provider onboarding process

For the CHAMPS PA overhaul:

• Update scheduling workflows to reflect the new 7-day standard and 72-hour expedited PA timelines effective March 22, 2026
• Build pre-authorization verification into the scheduling step for any procedures that require CHAMPS FFS prior authorization
• Check each MHP’s PA timelines separately — MHP timelines may differ from CHAMPS FFS timelines

For HMP members:

• Prepare for MDHHS HMP outreach beginning September 30, 2026 about work requirements
• Train front desk staff on the January 2027 work requirement exemptions (pregnant, medically frail, disability)
• Build patient communication workflows for potential HMP disenrollment beginning Q1 2027

For credentialing:

• Confirm CAQH ProView profile is current and re-attested — all Michigan MHPs require it
• Prioritize BCBSM credentialing for commercial — dominant carrier in every Michigan market
• For behavioral health providers — initiate PIHP credentialing separately from physical health MHP contracting

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Final Thoughts

Michigan Medicaid in 2026 is defined by the MICH launch, the CHAMPS PA overhaul, and the looming HMP work requirement changes beginning 2027. The three-track enrollment architecture remains the most critical operational concept for any provider entering the Michigan market — understanding that CHAMPS enrollment, 21st Century Cures Act compliance, and MHP contracting are three separate processes that must be completed in sequence is the difference between billing correctly from day one and spending months correcting enrollment errors.

The commercial market complexity — with BCBSM, Priority Health, HAP, McLaren, and PHP all holding meaningful regional market share — means Michigan requires active multi-carrier credentialing strategies more than most states.

At ClaimsXperts, we work with Michigan providers on CHAMPS enrollment, three-track architecture navigation, MHP and PIHP credentialing, MICH plan contracting, and full-cycle revenue cycle management across Michigan’s complex multi-payer environment.

Contact us today at https://www.rcmmasters.com/#contactus to learn how ClaimsXperts can support your Michigan practice.

ClaimsXperts is a Revenue Cycle Management company based in Frisco, TX, serving medical practices across the United States. We specialize in medical billing, coding, and insurance credentialing for solo practitioners, group practices, and specialty clinics.