Illinois
Medical Billing Services in Illinois
Practices in Illinois pay 4-8% of collections for billing, with no long-term contract, and can add credentialing. HealthChoice Illinois, Medicare and commercial billing for Chicago, Springfield and statewide.
Key takeaways
- 01HealthChoice Illinois plans are Aetna Better Health of Illinois, Blue Cross Community Health Plans, CountyCare (Cook County), Meridian and Molina; Humana joins on 1 January 2027.
- 02Illinois Medicaid requires claims within 180 days of the date of service (89 Ill. Adm. Code 140.20).
- 03Illinois requires payment within 30 days of a clean claim, with 9% annual interest after that (215 ILCS 5/368a).
Why Medical Groups in Illinois Partner With Us
Illinois Payer Billing
We bill HealthChoice Illinois as well as the commercial insurers common in Illinois
Coders Matched to Your Specialty
Coding done by specialty-trained staff familiar with your type of practice
Dedicated Account Manager
Your account has one owner on our side, from the first week onward
No Long-Term Contract
Our fee is 4-8% of collections, and you are not locked into a long-term contract
What Physicians in Illinois Get From Our Billing
Illinois Medicaid Billing. Billing for Illinois Medicaid and the HealthChoice Illinois managed care plans
HIPAA Compliant. HIPAA compliant handling of patient data, with a dedicated account manager for each practice
See How Much Revenue Your Illinois Practice Is Leaving on the Table
Get a free, no-obligation practice assessment. We'll analyze your claims, denials, and A/R to show you exactly where you're losing money.
Payer Rules in Illinois Explained
Key state laws and requirements that affect how Illinois practices bill patients and insurers
5 years on unwritten agreements (735 ILCS 5/13-205), 10 years on written ones (735 ILCS 5/13-206)
180-day timely filing for Illinois Medicaid (Illinois HFS)
Balance-billing protection under 215 ILCS 5/356z.3a
Health Care Services Lien Act (770 ILCS 23)
Legal Overview
<p>Illinois allows <strong>5 years</strong> to sue on an unwritten agreement (735 ILCS 5/13-205) and <strong>10 years</strong> on a written one (735 ILCS 5/13-206).</p><h3>Timely Filing</h3><p>Illinois Medicaid requires claims within 180 days of service. Commercial deadlines are set by each contract.</p><h3>Patient Protections</h3><p>Illinois has surprise billing protections for emergency services and certain out-of-network care at in-network facilities (215 ILCS 5/356z.3a).</p>
Coverage Across Illinois, Region by Region
Chicago Metro
The Chicago area is a dense, competitive healthcare market anchored by Northwestern Medicine, Rush University Medical Center, Advocate Health and UChicago Medicine. A large Medicaid managed care population, served by plans such as Meridian, Molina and CountyCare, sits alongside strong commercial coverage.
Cook County Health's public system and the region's academic medical centers shape referral patterns for independent practices.
Cardiology / oncology / orthopedics / neurology / pulmonology / behavioral health
Central & Southern Illinois: Springfield & Beyond
Central and Southern Illinois is served by HSHS St. John's Hospital, Memorial Health and SIU Medicine, across a mostly rural area. Practices here bill a smaller set of payers than Chicago practices do.
State employee health plans are a large part of the local payer mix, and rural health clinic billing rules apply to many providers.
Family medicine / internal medicine / general surgery / rural health / geriatrics
Rockford & Northern Illinois
Rockford is northern Illinois's healthcare hub, anchored by Mercyhealth and UW Health Rockford. Manufacturing employers bring workers' compensation claims alongside commercial and Medicaid billing.
Some patients cross the Wisconsin line for care, so practices sometimes bill Wisconsin commercial plans as well.
Family medicine / orthopedics / cardiology / behavioral health / general surgery
Answers on Medical Billing in Illinois
Managed Billing for Illinois Providers
From eligibility checks to final payment, we handle your billing so you can focus on patients.
Claims Management. Claim submission and follow-up until each claim is paid or closed
Denial Management. Denied claims worked and appealed
Patient Billing. Clear patient statements and payment plans
Credentialing. Payer enrollment at $150 per application, per provider, usually 60 to 90 days with each payer, in our experience
Want a Second Look at Your Billing?
Get a free, no-obligation review of your practice's billing.
- Where claims are being denied, and why
- Which unpaid claims can still be recovered
- What billing would cost at 4-8% of collections
Specialties We Support Across Illinois
Our specialty is behavioral health and therapy billing. We also work with the other practices listed here.
- Psychiatry
- Speech Therapy
- Occupational Therapy
- Physical Therapy
- ABA Therapy
- Mental Health
- Psychology
- Behavioral Health
- Substance Use Treatment
- Cardiology
- Oncology
- Primary Care
- Orthopedics
Put Medtransic to Work in Illinois's Independent Providers
Let us handle your medical billing so you can focus on patient care