End-to-end medical billing that lifts collections, cuts denials, and gives you complete visibility into your revenue cycle.
Locally owned in Michigan since 1993
Medical billing & physician credentialing that actually gets you paid
Medical Management Systems of Michigan helps physicians, EMS agencies, surgical groups, and urgent care clinics across Michigan collect more, code cleaner, and stay credentialed — backed by real specialists in Lansing you can pick up the phone and call.
HIPAA-compliant
U.S.-based, never offshore
Specialty-specific coders
30+ yrshelping providers maximize revenue
30+
Years serving healthcare providers
98%
Clean-claim rate on first submission
Days
Faster payments, not weeks in A/R
100%
U.S.-based, never offshore
What we do
One partner for billing, credentialing & practice growth
From a single physician to a multi-county EMS authority, we tailor the engagement to your specialty, your volume, and your goals — and we own the outcome.
End-to-end revenue cycle management as a service — we run every stage from eligibility to final payment, so you collect 100% of what you've earned.
Specialized billing for emergency and non-emergency transports — built for the compliance and payer rules unique to EMS.
Get your providers credentialed and enrolled with every payer — accurately, and far faster than doing it in-house.
Get in-network and stay in-network — we manage payer enrollment, revalidation, and group linkage from start to finish.
High-complexity surgical billing done right — because a single coding error on a surgical claim is expensive.
High-volume billing that keeps pace with your clinic — accurate coding and fast claims for every patient who walks in.
Starting or restructuring a practice? We help you set up billing, credentialing, and operations so you're profitable from day one.
Why providers switch to MMSM
Fewer denials, faster payments, and a partner who answers the phone
Most practices don't have a billing problem — they have a visibility problem. Claims slip through cracks, denials pile up unworked, and no one can tell you exactly why collections are down. We fix that.
- Specialty-specific coders who know the difference between a clean surgical claim and a costly downcode.
- Aggressive denial management — we work every rejection, appeal, and underpayment instead of writing it off.
- Transparent reporting so you always know your clean-claim rate, days in A/R, and net collections.
- A real Michigan team — your account is handled here, not handed off to an offshore call center.
How it works
A simple, low-risk path to better revenue
Switching billing companies sounds painful. With MMSM it's a guided, four-step transition designed to protect your cash flow.
Free revenue review
We analyze your current collections, denials, and A/R to pinpoint exactly where money is being left on the table.
Custom game plan
You get a clear proposal — scope, fees, and projected impact — built around your specialty and volume.
Seamless onboarding
We handle the handoff, credentialing, and system setup so claims keep flowing during the switch.
Ongoing optimization
Monthly reporting and proactive denial work keep your revenue climbing — not just steady.
Who we serve
Built for the providers who keep Michigan healthy
Physician practices
Solo and group practices across primary care and specialties who want clean claims and predictable cash flow.
EMS & ambulance
Municipal and private agencies billing emergency and non-emergency transports with Medicare/Medicaid precision.
Surgical groups
High-complexity surgical and procedural billing where accurate coding protects significant revenue.
Urgent care
High-volume, fast-turnaround clinics that need billing to keep pace with the patients coming through the door.
The local alternative to offshore billing
All the savings of outsourcing — none of the offshore headaches
Offshore billing promises low rates, then delivers time-zone delays, language gaps, security questions, and denials nobody chases. Outsourcing your billing shouldn't mean losing control of your revenue.
- Your patient data stays with a U.S., HIPAA-compliant team — not routed overseas.
- Talk to a named account manager in Michigan, during your business hours.
- Specialty expertise that prevents the denials cheap billing creates.
In their words
Trusted by Michigan practices & agencies
★★★★★
We switched from a national billing company and our collections went up within the first quarter. The difference is they actually work our denials — and I can call someone who knows my account by name.
P
Practice AdministratorMulti-provider specialty group, Mid-Michigan
★★★★★
MMSM handles our ambulance billing end to end. Medicare and Medicaid transport claims used to be a nightmare. Now they're clean, fast, and we finally have reporting we trust.
O
Operations DirectorMunicipal EMS agency
★★★★★
They credentialed our new physicians across every payer without us lifting a finger. What would have taken us months took weeks, and we started billing sooner.
O
Office ManagerUrgent care clinic
Testimonials reflect representative client outcomes. Specific results vary by specialty and payer mix.
Answers
Frequently asked questions
Straight answers to the questions providers ask us most. Don't see yours? Just ask.
What does Medical Management Systems of Michigan do?
We are a Lansing, Michigan medical billing and physician credentialing company. We provide full-service medical billing, EMS and ambulance billing, surgery billing, urgent care billing, provider credentialing, payer enrollment, and new-practice consulting for healthcare providers throughout Michigan and across the U.S.
Where is MMSM located and what areas do you serve?
Our office is at 1701 Lake Lansing Road, Suite 100, Lansing, MI 48912. We serve providers across the entire state of Michigan — including Lansing, Grand Rapids, Detroit, Ann Arbor, Flint, Jackson, Kalamazoo, Saginaw and Traverse City — and can support practices anywhere in the U.S.
How much does a medical billing service cost?
Most medical billing companies charge a percentage of collections, typically 4%–9% depending on specialty, claim volume, and complexity. MMSM prices transparently based on your specialty and volume, with no surprise fees. Request a free quote and we’ll show you the expected return, not just the rate.
Is MMSM's billing offshore?
No. Your billing and your patients’ data are handled by our U.S.-based, HIPAA-compliant team in Michigan — never outsourced overseas. You get the cost efficiency of outsourcing without the offshore security, communication, and quality trade-offs.
How do I switch medical billing companies to MMSM?
It’s easier than most practices expect. We run a free revenue review, build a transition plan, and manage the handoff — including system access and credentialing — so your cash flow keeps moving. Most practices are fully transitioned within a few weeks.
The MMSM Guarantee
We'll find you savings — or we'll pay you $500 for your time
We're confident we can find money-generating or money-saving opportunities in your practice. Start with a free billing and financial review — and if we can't show you tools and solutions to improve your organization, we'll pay you $500 for your time. No offshore handoffs, no long-term lock-in: just a Michigan team that stands behind its work.
Ready to get paid faster?
Talk with a Michigan-based billing and credentialing specialist. We'll review your current numbers and show you exactly where revenue is leaking — no cost, no obligation.