End-to-end medical billing that lifts collections, cuts denials, and gives you complete visibility into your revenue cycle.
Locally owned in Michigan since 1984
Medical billing and credentialing paid the first time, quickly & completely
Medical Management Systems brings 40 years of healthcare management expertise in medical billing and credentialing. We help healthcare professionals and EMS agencies strengthen revenue cycle performance, accelerate reimbursements, and achieve lasting success. Having supported hundreds of practices and agencies and processed millions of claims, our team works confidently with all leading EHR and revenue cycle optimization technologies.
With MMSM, you will have access to:
- Experienced healthcare practice management expertise
- Certified professional coders and billers
- Credentialing experts
- Well-defined policies and procedures
- Convenient and secure access across the state
HIPAA-compliant
U.S.-based, never offshore
CPC & CPB certified coders & billers
40+ yrshelping providers maximize revenue
40+
Years serving Michigan providers
98%
Clean-claim rate on first submission
CPC · CPB
Certified professional coders & billers
100%
U.S.-based, never offshore
What we do
One partner for billing, credentialing & practice growth
From a single provider to a multi-county EMS authority, we tailor the engagement to your specialty, your volume, and your goals, and we own the outcome.
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, with accurate coding and fast claims for every patient who walks in.
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.
Startup guidance, staff and provider training, and chart audits for new practices and established ones that want to protect their revenue.
In their words
Trusted by Michigan practices & agencies
Five-star review.
We hired MMSM after an insurance carrier audited our practice and claimed we owed them over $750,000. MMSM consultants reviewed the claims and billing requirements, met with the carrier's auditors, and provided all the documentation to support our claims. They even found additional items we could bill for. We ended up owing $500,000 less than the original amount.
Physician OwnerPrivate practice, Michigan
Five-star review.
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.
Practice AdministratorMulti-provider specialty group, Mid-Michigan
Five-star review.
MMSM handles our ambulance billing end to end. Medicare, Medicaid, and Blue Cross transport claims used to be a nightmare. Now they're clean, fast, and we finally have reporting our board trusts.
Operations DirectorMunicipal EMS agency
Testimonials reflect representative client outcomes. Specific results vary by specialty and payer mix.
Why providers switch to MMSM
Certified experts in your specialty, your payers, and your billing system
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. Our team has been fixing that for Michigan providers since 1984.
- Certified Professional Coders and Billers (CPC/CPB) who know the difference between a clean claim and a costly downcode, across primary care, surgery, behavioral health, EMS, urgent care, and more.
- Deep payer and systems experience with Medicare, Medicaid, Blue Cross Blue Shield of Michigan, and commercial plans, in the practice-management systems you already use.
- Aggressive denial management: we work every rejection, appeal, and underpayment instead of writing it off.
- Training and auditing: provider documentation training and chart audits that protect your revenue when payers come looking.
- Transparent monthly reporting so you always know your clean-claim rate, days in A/R, and net collections.
In-house billing vs. MMSM
One biller in the back office is your biggest revenue risk
For years, a practice could get by with one trusted person handling the billing. That era is over. Billing today is electronic, automated, and changing constantly, with claims, remittance, denials, credentialing, and shifting payer rules. It's more than any single in-house employee can realistically keep up with.
Worse, an in-house biller rarely produces the monthly financial reporting you need to actually run your practice. Many providers don't discover a problem until they're doing year-end taxes with their accountant, six months to a year too late to fix it.
- No single point of failure: a full team backs your revenue instead of one person who can quit, get sick, or quietly fall behind.
- Monthly financial reporting you can act on: clean-claim rate, days in A/R, and net collections every month, not a surprise at year-end.
- Lower true cost than a salary, benefits, billing software, and ongoing training, handled by specialists who track every payer change for you.
How it works
A simple, low-risk path to better revenue
Whether you're leaving another billing company or moving billing out of your back office, it's a guided, four-step transition designed to protect your cash flow.
Free consultation
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 covering 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
Our work splits almost evenly between two worlds. About half is billing for EMS agencies and municipalities, and half is for physicians, other healthcare providers, and specialty groups. Whichever side you're on, you're working with a team that handles it every single day.
Physicians & providers
Physicians, nurse practitioners, physician assistants, and behavioral health, in solo and group practices across primary care and specialties.
EMS & municipalities
Municipal, fire-based, and private agencies billing emergency and non-emergency transports to Medicare, Medicaid, BCBSM, and commercial payers.
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. With MMSM your patient data stays with a U.S., HIPAA-compliant team, and you talk to a named account manager in Michigan during your business hours.
See the offshore comparisonAnswers
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 provider credentialing company, founded in 1984. We provide full-service medical billing, EMS and ambulance billing, surgery billing, urgent care billing, provider credentialing, payer enrollment, and practice consulting, including staff and provider training and chart auditing, for physicians, other healthcare providers, and EMS agencies throughout Michigan.
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.
How much does a medical billing service cost?
Most medical billing companies charge a percentage of collections, typically 4%–10% 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.
How do I switch medical billing companies to MMSM?
It’s easier than most practices expect. We start with a free consultation, 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. Read our guide to switching billing companies or to moving billing out of the back office.
Should we keep billing in-house or outsource it?
It comes down to risk, cost, and visibility. A single in-house biller is a single point of failure, and it rarely produces the monthly financial reporting you need to run the practice, so problems surface months too late. Outsourcing to MMSM gives you a full specialist team that stays current on every payer change, transparent monthly reporting on collections and A/R, and a lower true cost than a salaried biller with software and training, without giving up control of your numbers.
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.