Provider Credentialing in Ohio: Medicaid (PNM), ODM Centralized Credentialing, Next Generation Plans and Medicare

What each program is, who acts on it, and the only timing language the source itself uses. None of these are predictions for a particular application.

ODM's New Provider Enrollment questions and answers put it bluntly: "Ohio does not accept paper applications." PNM replaced the older MITS enrollment portal in October 2022, and the sequence it walks you through is:

1. Open the online application and choose New Provider. The button sits at the top right of the home screen.
2. Pick the application type. A physician or nurse practitioner picks the standard application as an individual practitioner; someone providing ODM waiver services in a member's home picks Medicaid Waiver (ODM). ODM calls the provider type choice "extremely important" and sends anyone unsure to the Integrated Help Desk at 1-800-686-1516.
3. Enter demographics and save the Registration ID. The Reg ID is how you return to an unfinished application and how you track it later. Lose it and the help desk has to retrieve it.
4. Identify the provider correctly. Individual providers give their own SSN, even when they will bill under a group, never the group's FEIN; ODM warns that an invalid SSN or a FEIN in the SSN field can get the application rejected. Organizations give the SSN and date of birth of every owner of 5% or more and of managing employees (OAC 5160-1-17.3). An individual practitioner selects "sole proprietor" as ownership type.
5. Upload what the system asks for and submit. ODM says failing to submit required documents can leave the application unprocessed, forcing you to begin again.

When the application is approved, ODM emails a confirmation containing the Medicaid Welcome Letter to the address on the application. Under OAC 5160-1-17.4, a new agreement takes effect when the provider signs the application and meets participation requirements, and can be made retroactive up to 12 months if the provider was properly licensed or certified during that time.

PNM is built around individual people, not offices. ODM's PNM FAQ says every user needs a personal OH|ID, created with the user's own information, and that an office or organization "should not have an OH|ID" because it is not a person.

• Administrator. Exactly one per provider (NPI and Medicaid ID). The Administrator signs the provider agreement on the initial application, is accountable for what it says, and is the only one who can grant other users access.
• Agent. Works specific screens on the provider's behalf, with whatever permissions the Administrator assigns. This is the role an outside credentialing service holds.
• One login, one role. A person can be Administrator for one provider and Agent for another, but needs a separate OH|ID for each role.

The trap is the single Administrator. If that person leaves the practice without handing the role over, nobody else can add an Agent or change access, and every later revalidation waits on fixing it. Settle who holds the Administrator role before the first application is filed.

Ohio moved Medicaid credentialing from the plans to the state. ODM's Credentialing Guide and Requirements (last updated December 31, 2025) says every provider must enroll, but only certain provider types and specialties must also be credentialed, and that for those providers credentialing "is combined with enrollment or revalidation—there is no separate credentialing application." CareSource's centralized credentialing page describes the result from the plan side: providers "will undergo only one credentialing and recredentialing process at the state level."

Who is on the list (Appendix A). Individual types include physician assistants, chiropractors, dentists, optometrists, podiatrists, physical, occupational and speech therapists, audiologists, nurse practitioners, clinical nurse specialists, nurse midwives, pharmacists, registered dietitian nutritionists, acupuncturists, and independently licensed social workers, counselors, marriage and family therapists, psychologists and chemical dependency counselors. Physicians (provider type 20) are credentialed across a long list of specialties, from family practice and internal medicine to orthopedic surgery, pain medicine and the pediatric subspecialties. Facilities on the list include hospitals, ambulatory surgery centers, hospices, dialysis clinics, Medicare-certified home health agencies, IDTFs, nursing facilities and community behavioral health and SUD treatment programs.

What ODM checks for individuals:

• A CAQH profile, with the CAQH ID entered on the first page of the PNM application and an attestation no older than 120 days. A missing, incomplete or stale profile gets the application returned.
• A license in each state of practice.
• Professional liability coverage at state minimums that is active on the day ODM decides; inactive coverage closes the application.
• Education entered the same way in PNM and CAQH, the full malpractice claims history, and five years of work history with any gap over six months explained (newly licensed providers count from licensure).
• Board certification for nurse practitioners, clinical nurse specialists, nurse midwives and physician assistants.
• A DEA certificate valid in Ohio for physicians, podiatrists and oral surgeons, or an uploaded statement explaining why none is needed.
• Hospital privileges or an admitting arrangement, with a start date, for listed specialties such as cardiology, gastroenterology, nephrology, neurology, OB/GYN, oncology, PM&R, pulmonology, surgery and urology. Inactive privileges close the application.

Facilities instead submit pages 1 to 8 of the Ohio Department of Insurance Standardized Credentialing Form Part B, plus license, malpractice coverage and either accreditation or a state site visit report.

Ohio declines to give a number. Asked how long processing takes, ODM's new-provider Q&A answers that it "depends on the number of applications submitted" and that "there is no magic formula." What it does say is that errors or missing documents "will cause your application to be rejected and place it back at the rear of the work queue."

The credentialing guide is a little more concrete for credentialed provider types: "Please allow 30 business days before inquiring about application status," and a returned application takes longer. Its advice for speed is to include the completed CAQH profile or ODI form with the first submission. Those two statements are the whole of ODM's published timing; there is no Ohio statute setting a Medicaid enrollment deadline that we found.

To check Ohio Medicaid enrollment status, sign in to PNM, click the Registration ID, and read the PNM Application Status in the "My Current and Previous Applications" panel on the Provider Management Home page, as ODM's Q&A describes.

The status that matters most is a return. Per the credentialing guide, when ODM needs more, the contact on the application's Correspondence Address page gets an email telling them to log in and read the Return to Provider (RTP) letter. Common causes ODM lists: missing or incomplete CAQH profiles or ODI forms, outdated CAQH attestations or ODI signatures, and missing malpractice insurance. To answer, open the provider, choose Enrollment Actions, then Continue Registration, fix what was asked (updating and re-attesting CAQH first if the request concerns CAQH), save, and click Submit for Review.

The deadline is short: the application "must be returned to ODM in the PNM portal within 9 days of the issuance of RTP letter." Missing it cancels and denies the application, and for a provider already enrolled it terminates the Medicaid agreement. Credentialing requests can also arrive by email from OhioCredentialing@maximus.com with their own due date. Credentialing questions go to the Integrated Help Desk at 1-800-686-1516 (provider enrollment options, then ask for credentialing) or Credentialing@medicaid.ohio.gov.

OAC 5160-1-17.8 applies the federal screening levels. Limited-risk providers get license verification and database checks before and after enrollment. Moderate-risk providers add pre- and post-enrollment site visits by ODM or its designee. High-risk providers add a criminal background check for everyone with a 5% or greater ownership or control interest, who must submit fingerprints within thirty days of applying. Once enrolled, every provider must allow unannounced inspections of its locations.

The application fee applies only to provider types the rule's appendix names, and the rule exempts individual physicians and non-physician practitioners. ODM's Q&A puts it the same way (organizational providers only, not individual practitioners or practitioner groups) and sets the 2026 fee at $750 per application, non-refundable, paid by Discover, MasterCard or Visa inside PNM. Proof of a fee already paid to Medicare or another state's Medicaid program waives it; ODM's new-enrollment Q&A says within the past five years, while its revalidation Q&A says within the past two, so confirm with the help desk before relying on an older payment.

Under OAC 5160-1-17.4, Ohio Medicaid provider agreements are time-limited and must be revalidated no later than five years from the effective date of the original or last revalidated agreement, or sooner if the provider's federal risk level changes. For credentialed provider types, recredentialing rides inside the same revalidation application.

• Notice first. ODM's revalidation Q&A says notices go out about 120 days before the deadline, by mail to the Correspondence Address and by email, and are also posted in the PNM correspondence folder under Enrollment Notices. The rule itself guarantees at least 90 days' notice. Do not start before the notice arrives.
• Every number separately. A provider with several Medicaid numbers gets a notice for each and revalidates each one.
• Medicare does not count. Revalidating with Medicare does not satisfy Ohio Medicaid.
• Keep the address current. Providers must tell ODM within 30 days of an address change; an outdated Correspondence Address is how notices go missing.
• If you file on time and ODM is slow, the rule lets you keep operating under the expired agreement until ODM's decision takes effect.
• If you do not file, ODM terminates the agreement effective 30 days after mailing notice. A provider who comes back later gets an effective date based on when they finished, with a gap in billing and no retroactive enrollment.

Ohio launched its Next Generation managed care program on February 1, 2023. ODM's managed care FAQ (October 2025) lists seven MCOs: AmeriHealth Caritas Ohio, Anthem Blue Cross and Blue Shield, Buckeye Community Health Plan, CareSource Ohio, Humana Healthy Horizons in Ohio, Molina Healthcare of Ohio and UnitedHealthcare Community Plan of Ohio. ODM says providers "can choose which Next Generation MCOs they wish to contract" with and points to each plan's provider relations contact for contracting. Pharmacy runs separately through Ohio's single pharmacy benefit manager, Gainwell Technologies.

Three pieces have to line up before a managed care claim pays:

1. Active PNM enrollment. A UnitedHealthcare Community Plan of Ohio notice dated June 16, 2026 says ODM "now requires all providers who deliver services to Medicaid managed care members to be enrolled" in PNM, and that unenrolled providers' claims are "Rejected at the Electronic Data Interchange (EDI) front door" and not accepted as encounters. The same notice describes a 120-day temporary enrollment and a 5-year standard agreement, and lists CARC 226 with RARC N767 on these denials.
2. An active affiliation. Encounters can reject when the billing and rendering providers are not affiliated in PNM on the date of service. The PNM FAQ explains that an individual can request a group affiliation but the group must confirm it, and that only an affiliation in Active status reaches the Provider Master File ODM sends to the MCOs every day. A Confirmed affiliation that never reached Active is one reason a new doctor can be missing from a plan's roster.
3. A contract with the plan. CareSource's page says providers "will first need to contract with CareSource" before the centralized credentialing applies to that network. State credentialing replaces each plan's credentialing review; it does not replace the plan's agreement.

For the national carriers on that list, our payer-by-payer credentialing hub covers their commercial and Medicare Advantage networks.

Outside Medicaid, Ohio regulates credentialing through Chapter 3963 of the Revised Code, which governs contracting entities. ORC 3963.05 (effective June 25, 2008) has the Department of Insurance prescribe the CAQH credentialing application for physicians and a standard form for other providers, requires contracting entities to use those forms for initial credentialing and recredentialing, and bars them from asking for information beyond the form.

ORC 3963.06 (effective September 23, 2008) adds the clock:

• An incomplete form must be flagged "not later than twenty-one days" after the contracting entity receives it.
• Credentialing must be completed "not later than ninety days" after the entity receives the form. Hospitals are excluded from the 90-day requirement.
• An entity that misses the 90 days owes the provider either a $500-per-day penalty, weekends included, from day 90 until the decision, or retroactive reimbursement under the contract for services rendered in that period. The entity chooses and must tell the provider which.

We did not determine whether these sections reach Medicaid managed care contracts, which ODM now credentials centrally in any case. For commercial plans, the 90-day clock depends on a complete CAQH profile, so keep it attested; our CAQH explained page walks through it.

Ohio shares its Medicare contractor with Kentucky: CGS Administrators is the A/B MAC for Jurisdiction 15 (CGS provider enrollment). File the CMS-855I or CMS-855B in PECOS; reassignment of benefits to a group is part of the 855I. CMS's Medicare enrollment contact list (file dated March 24, 2026) lists 866-276-9558 for Ohio Part B provider enrollment at CGS. Our Medicare provider enrollment page explains the forms, and the Kentucky guide covers CGS's own application-delay rules, which apply to Ohio files the same way.

CMS holds every MAC, CGS included, to the processing table in Program Integrity Manual chapter 10:

Medicare's retroactive window is narrow. 42 CFR 424.521 allows physicians and non-physician practitioners to bill for up to 30 days before the effective date when circumstances kept them from enrolling sooner (90 days after a Presidentially declared disaster). Compare that with Ohio Medicaid's up-to-12-month retroactive effective date under OAC 5160-1-17.4; the two programs do not work alike.

Part B claims for Railroad Retirement Board beneficiaries go to Palmetto GBA, which handles Railroad Medicare nationwide, not to CGS. Once CGS approves Part B, request a Railroad Medicare PTAN through Palmetto's PTAN Lookup and Request Tool. Palmetto builds the record from your Part B enrollment without a second CMS-855, uses your Part B effective date, asks you to allow up to 30 days, and requires a separate electronic claims enrollment.

The Ohio files we see stall on the provider's own data far more often than on ODM's queue, and PNM's rules make each mistake expensive:

• A stale CAQH attestation. ODM returns the application if the attestation is older than 120 days, and the CAQH ID has to be on page one of the PNM application.
• A 9-day RTP window missed because the correspondence email belongs to someone who left. The application is cancelled, and an active provider's agreement terminates.
• Malpractice or privileges lapsing mid-review. ODM checks both on the day it decides, and an inactive policy or privilege closes the file.
• The group FEIN in the SSN field, or a provider type picked by guesswork.
• Affiliation left at Confirmed. The doctor is enrolled but never reaches the Provider Master File, so the plans reject the encounters.
• No Administrator. The one person who held the role left, and nobody can grant access for revalidation.
• Mismatched records. An old address in NPPES, a different practice name on the IRS letter, or a CAQH profile that disagrees with PNM sends the file back.
• A missed revalidation notice mailed to an outdated Correspondence Address, ending in termination and a billing gap with no retroactive fix.

Our answer is to check before filing and follow up after: one file compared field by field across PNM, CAQH, NPPES, the license and PECOS, then weekly follow-up with every payer, logging the representative, the date and the reference number.

For Ohio, gather: individual and group NPIs with current NPPES addresses; each user's personal OH|ID and a decision on who is Administrator; the practitioner's SSN (and, for a group, owners' and managing employees' details); the IRS letter with the legal name and tax ID; the Ohio license and any other state licenses; an Ohio DEA or the explanation statement; board certification where required; a current malpractice certificate; hospital privileges or an admitting arrangement for the listed specialties; five years of work history; a CAQH profile attested within 120 days; and the Medicare approval letter once you have it. Our page on what we need from you to start credentialing has the full list and a secure way to send it.

For the vocabulary (credentialing vs. enrollment vs. contracting), see what provider credentialing is; for every state's federal baseline, see Medicaid provider enrollment. Other state guides: Florida and Kentucky.

ClaimCarePro enrolls providers with Ohio Medicaid in PNM, prepares the CAQH profile ODM's centralized credentialing reads, sets up group affiliations so the Next Generation plans see you, works the plan contracts, files Medicare with CGS through PECOS, requests the Railroad Medicare PTAN, and tracks revalidation notices, as one checked file with weekly, logged payer follow-up. Flat pricing: $250 per payer application per provider, CAQH setup $250, re-credentialing $250, maintenance $99 per provider per year, or the new-practice bundle at $1,750 per provider ($1,400 each additional provider on the same group and payers). Start credentialing now and get a secure start link within one business hour, or call (844) 772-8902. More on our provider credentialing services page and on recredentialing.

Updated October 23, 2026. All Ohio sources listed here were opened and read on October 23, 2026; entries marked otherwise were read for a sibling page that week. ODM, the plans and CMS can change their rules at any time, and when they do their documents control, not this summary, which is not legal advice.

• Ohio Department of Medicaid, New Provider Enrollment Questions and Answers (2026 file; footer "Updated 04/24/2025"): medicaid.ohio.gov
• ODM, Federal Requirement for Revalidation Questions and Answers (2026 file; revised 04/24/2025): medicaid.ohio.gov
• ODM, Credentialing Guide and Requirements (last updated December 31, 2025): medicaid.ohio.gov
• ODM, Provider Network Management (PNM) FAQ: managedcare.medicaid.ohio.gov (OH|ID, Administrator and Agent roles, affiliations, Provider Master File)
• ODM, Ohio Medicaid Managed Care FAQ (October 2025): managedcare.medicaid.ohio.gov
• Ohio Administrative Code 5160-1-17.4, Medicaid provider agreements, revalidation (effective April 17, 2021): codes.ohio.gov
• Ohio Administrative Code 5160-1-17.8, Medicaid provider screening and application fee (effective January 31, 2020; page updated June 25, 2025): codes.ohio.gov
• Ohio Revised Code 3963.05 (effective June 25, 2008): codes.ohio.gov
• Ohio Revised Code 3963.06 (effective September 23, 2008): codes.ohio.gov
• UnitedHealthcare Community Plan of Ohio, Medicaid provider network management notice (June 16, 2026): uhcprovider.com
• CareSource, Centralized Credentialing and Single Pharmacy Benefit Manager: caresource.com
• CMS, Medicare Fee-for-Service Provider Enrollment Contact List (file dated March 24, 2026): cms.gov
• CGS Administrators, J15 Part B Provider Enrollment: cgsmedicare.com (read October 23, 2026 for our Kentucky guide)
• CMS, Medicare Program Integrity Manual, chapter 10 (read October 23, 2026 for our Medicare enrollment page): cms.gov
• 42 CFR 424.521, eCFR (read October 23, 2026 for our Medicare enrollment page): ecfr.gov
• Palmetto GBA, Enroll in Railroad Medicare (read October 23, 2026 for our Medicare enrollment page): palmettogba.com
• CAQH ProView Provider Quick Reference (read October 16, 2026 for our CAQH page): caqh.org

Not found, and therefore not stated: an ODM-published processing time for enrollment, any Next Generation MCO's own contracting timeline, a primary-source copy of the 2026 executive order and emergency rule changes reported to affect Ohio Medicaid revalidation and inactivity terminations, and whether ORC 3963.06 applies to Medicaid managed care contracts.