Maryland Medicaid’s MPRIME Portal Is Live: The Deadlines Providers Must Hit Before December 31

What is MPRIME and what do Maryland Medicaid providers need to do now?

As of November 2026, MPRIME refers to Maryland Medicaid’s new provider enrollment portal, which replaced ePREP in October and now handles every new enrollment, revalidation and update. Providers caught in the summer application hold must file complete MPRIME applications by December 31, 2026 to qualify for a backdated effective date, and two earlier deadlines arrive in November.

• What changed: ePREP is retired, and enrollment, revalidation, ownership changes and record updates now run only through MPRIME.
• Deadlines: Out-of-state license updates are due November 15, suspension fixes by December 1, and complete new applications by December 31.
• What is at stake: Services delivered while unenrolled are not paid if you miss the backdate, and you cannot bill the patient for them.

What Changed When MPRIME Replaced ePREP

Maryland Medicaid first announced the move from ePREP, its Electronic Provider Revalidation and Enrollment Portal, to the Maryland Provider Registration and Information Management Enterprise in transmittal PT 59-26 on February 6, 2026. To prepare, the state froze enrollment activity in two phases. According to the Maryland Department of Health MPRIME page, applications for moderate- and high-risk provider types were placed on hold starting July 1, 2026, and limited-risk provider types followed on August 1. Any new or updated application submitted during the hold was returned unprocessed.

MPRIME went live on October 13, 2026, according to transmittal PT 36-27 as reported by The Care Insider. It now handles new enrollments, update applications, changes of ownership and every other function providers used ePREP for. Automated Health Services continues to run the provider enrollment call center at 1-844-463-7768, and the number did not change.

The most consequential guidance came in transmittal PT 94-26, issued June 18, 2026. It created the backdate rule for newly enrolling providers, deferred certain suspensions and terminations until after go-live, and set the hard dates that now apply. Every one of those dates falls in the next eight weeks.

Which Maryland providers are affected by the MPRIME deadlines?

Every Maryland Medicaid provider needs an MPRIME account, but four groups face hard deadlines: new providers who could not enroll during the hold, out-of-state providers whose licenses expired during it, providers already in suspension, and practices with pending address or ownership changes. Missing a date can mean suspension, termination or unpaid services.

New providers carry the biggest financial exposure. Under PT 94-26, a newly enrolling provider who submits a complete and processable MPRIME application on or before December 31, 2026 receives an effective date set to the later of two dates: the start of that provider type’s hold (July 1 for high and moderate risk, August 1 for limited risk) or the provider’s license issuance date. Miss the deadline and the effective date follows standard rules, which usually means no coverage for the hold months.

Out-of-state, individually licensed providers whose licenses expired between August 1 and November 15, 2026 had their suspensions deferred to November 15. Anyone who has not uploaded updated license information in MPRIME by then is suspended automatically. Similarly, providers whose one-year suspension would have ended in termination between July 1 and November 30 were given until December 1 to submit updates in MPRIME.

Behavioral health providers have one additional option. The MDH MPRIME page notes that unenrolled behavioral health providers can register their NPI with Carelon to become eligible for courtesy authorizations for services delivered during the hold. Claims still have to wait until enrollment is approved.

Why the MPRIME Backlog Will Compound

Most of our Medicaid clients come to us after they have hit a roadblock or a denial on their own, and Maryland’s transition is producing exactly that pattern. Three months of returned applications did not disappear when MPRIME launched. They landed in the new system at the same time, alongside routine revalidations and every provider creating a new account.

The timing also overlaps with a national revalidation push. CMS directed states in April 2026 to revalidate every enrolled Medicaid provider within 24 months, a change we covered in our post on the CMS Medicaid revalidation mandate. Maryland had already pulled some revalidations forward, sending early notices from February through April to providers due between May and October 2026, with 90 days to respond.

The hidden delay sits downstream. Maryland’s HealthChoice managed care organizations generally will not begin credentialing a provider until the state Medicaid enrollment is in place. In our experience, Medicaid fee-for-service enrollment and managed care enrollment are almost entirely separate processes, and the managed care clock only starts once the Medicaid ID exists. A provider who waits until late December to file in MPRIME may not be credentialed with the MCOs that cover most of their patients until well into 2027.

That is why the December 31 date should be treated as a backstop, not a target. A complete application filed in November leaves time to fix a returned item and still qualify for the backdate. One filed on December 30 does not.

How much revenue is at stake if you miss the December 31 backdate deadline?

The exposure is every Medicaid service delivered between the hold start and your standard effective date. Providers who miss the December 31 backdate deadline cannot be paid for those services and, under Maryland’s guidance, may not bill the patient for them either, so the loss is total.

Here is an illustrative example using round numbers, not reported data. Picture a three-clinician outpatient therapy group in Baltimore that hired a new clinician licensed August 15, 2026, during the hold. Assume the clinician sees 20 Medicaid sessions a week at an average allowed amount of $90. From August 15 through December 31 is about 20 weeks, or roughly $36,000 in services. If the group files a complete MPRIME application by December 31, those services can be backdated to August 15 and billed. If the application is late or returned as incomplete after the deadline, that $36,000 is unrecoverable.

Two more rules shape the math. Maryland requires all claims within 12 months of the date of service, even with a backdated effective date, so August 2026 sessions must be billed by August 2027. And PT 94-26 is explicit that backdates are not assured. Providers who treat Medicaid patients before enrolling do so at their own risk.

When we audit an application before submission, the goal is simple: make sure it is complete and processable the first time, because a returned application in late December can cost a practice the entire backdate.

What to Do Before the MPRIME Deadlines

Use this sequence to protect your enrollment and your backdate.

1. Create your MPRIME account. Set up access for the administrator and whoever handles enrollment, using the step-by-step guides in the MPRIME Resource and Training Center.
2. Confirm your existing record. Check that your provider record transferred and that your practice, pay-to and correspondence addresses are current.
3. Upload renewed out-of-state licenses. Submit updated license information before November 15, 2026 to avoid automatic suspension.
4. Resolve any suspension. Submit the updates that clear a suspension before December 1, 2026, when deferred terminations take effect.
5. File new enrollments early. Submit a complete, processable application well before December 31 so a returned item can be corrected in time.
6. Start MCO credentialing immediately. Begin HealthChoice managed care credentialing the day your Medicaid ID is issued, with a current CAQH attestation ready.
7. Bill held claims promptly. Submit claims for the backdate period as soon as approval arrives, within 12 months of each date of service.

Practices adding several clinicians at once should also map each person’s license date against the backdate rule, since the effective date depends on whichever is later. If an application was returned during the hold, do not simply resend the old version. Rebuild it in MPRIME with current documents, ownership details and license dates, and keep a copy of every submission confirmation so you can show when it was filed if the backdate is questioned.

Common MPRIME Mistakes

The single most common Medicaid enrollment mistake we see is choosing the wrong enrollment type, and MPRIME raises the cost of that error. A provider who files as the wrong type, or files an individual enrollment when the group also needs one, gets the application returned. If that happens after December 31, the backdate is gone.

The second mistake is submitting an incomplete application to beat the deadline. PT 94-26 is clear that incomplete, incorrect or unapprovable applications are returned for corrections, and only a complete and processable application filed by December 31 earns the backdate. Speed without accuracy does not count.

The third mistake is assuming the backdate is automatic. It applies only to newly enrolling providers who meet the conditions, and Maryland states it is not assured. Practices that keep seeing Medicaid patients without a plan to enroll are carrying real risk. Document every patient seen during the hold so claims are ready the day approval arrives.

The fourth mistake is billing the patient. Maryland’s guidance says providers who render services but fail to enroll after the hold will not be paid and may not bill the participant. That leaves the practice absorbing the full cost of every visit.

The last mistake is waiting on managed care. Treating Medicaid approval as the finish line leaves months of MCO credentialing ahead, during which most Medicaid patients in Maryland cannot be billed. Our guide to getting credentialed with Medicaid explains how the two steps connect.

DIY vs. Outsourced Maryland Medicaid Enrollment

A practice with one new clinician and a staff member who knows the system can file in MPRIME on its own. The calculation changes for groups adding multiple providers, out-of-state clinicians, practices with ownership changes and anyone who already had an application returned. The real question is not whether your team can use the portal, but whether it can get every application complete on the first pass while still running the practice. With three hard deadlines in eight weeks, a single returned application can wipe out the backdate for a new hire.

Contracting Providers handles Medicaid enrollment, credentialing and payer contracting in more than 40 states. Every application is audited by a specialist before submission. Our first-time approval rate across all enrollment types runs approximately 94 percent, and our Medicaid enrollments carry an average approval rate of about 90 percent, with typical timelines of 60 to 90 days that vary by state and by whether the enrollment is for a group or an individual. Our maintenance plans cover revalidation, and we support one-off revalidations when a client provides the right access.

Once enrollment is approved, we coordinate the go-live steps that keep payments flowing, including EFT, ERA and EDI setup, and move straight into managed care credentialing. We respond to every inquiry within 24 hours. Contracting Providers is not a state Medicaid agency; we help providers prepare and submit enrollments through the state’s official systems.

For Maryland-specific details, see our Maryland Medicaid enrollment assistance page.

Frequently Asked Questions

Next Steps

Review our Maryland Medicaid enrollment assistance page for state-specific support.

See how the national revalidation push affects you in our post on the CMS Medicaid revalidation mandate.

Learn how Medicaid and managed care credentialing connect in our guide to getting credentialed with Medicaid.