OHIO REFERENCE · CHECKED JULY 2026

MinuteMen, Sedgwick, CorVel —
and the six others.

Nine managed care organizations are certified by Ohio BWC right now. You probably bill three of them. Here is the whole list with phone numbers, the provider fax numbers we can actually verify, where each one sits, and how many claims it manages — plus five payer blocks exactly as they print on a CMS-1500.

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The nine, as of July 2026

Ohio’s certified MCOs.

Ohio is one of four monopolistic states. Employers buy coverage from BWC, then choose a private managed care organization to run the medical and return-to-work side of every claim. That MCO is who you bill — not BWC. Nine are certified today, down from thirteen to fifteen a decade ago, and no other state has this layer at all.

MCO	Based in	Phone	Provider fax	Active claims, 2024
CorVel CorVel Corp. · corvel.com	Cleveland	800-275-6463	not verified	~96,100
MinuteMen OhioComp · minutemenmco.com	Cleveland	888-644-6266	888-644-7339	~90,700
3-hab, Ltd. independent · 3hab.com	Cincinnati	800-869-1871	not verified	~30,300
OHL Occupational Health Link · oehpmco.com	Columbus	888-844-0039	not verified	~23,800
AultComp Aultman Health Foundation	Canton	888-738-5800	877-738-0058	~22,800
ProMedica formerly HMS · hmssolutions.com	Toledo & Columbus	888-202-3515	not verified	~22,700
Spooner MAI Spooner Medical Administrators · spoonermai.com	Westlake	440-899-2400	800-542-9480	~16,000
Sedgwick MCO formerly CompManagement + CareWorks · sedgwickmco.com	Dublin	888-247-7799	888-627-0074	~10,100
Sheakley UniComp Sheakley · sheakley.com	Cincinnati	888-743-2559	888-626-2667	~9,700

Swipe the table sideways for the rest of the columns →

Phones, locations and claim volumes: BWC’s MCO Report Card, February 2026 edition. Provider fax numbers: the payer blocks printed on the CMS-1500 templates of a working Ohio voc-rehab practice. Current as of July 2026 — verify with the MCO and with Ohio BWC before you send anything.

Four blanks, and why we left them blank. We print a provider fax only where we can see it on a real payer block. For CorVel, 3-hab, OHL and ProMedica we have no fax we would stand behind, so there is none in the table. A guessed fax number is a bill nobody receives and a filing clock that keeps running — call the provider line, ask for the vocational rehabilitation billing fax, and write it down where your software keeps payers. If you have one confirmed in writing, send it to admin@onservice.us and we will add it with the date it was verified.

As they print

Five payer blocks, top-right of the form.

A bill goes to the address on the payer block, and that is not always the head office: Spooner is a Westlake company that takes bills at Ranney Pkwy, and Sheakley is a Cincinnati company whose block says Blue Ash. These five are the blocks Med Claims Pro prints, taken from the CMS-1500 templates a working Ohio practice bills from.

MinuteMen OhioComp

3740 Carnegie Ave Suite B200
Cleveland, Ohio 44115
Fax: 888-644-7339

AultComp MCO

PO Box 36149
Canton, Ohio
Fax: 877-738-0058 · Phone: 888-738-5800

Sedgwick MCO

PO Box 1040
Dublin, Ohio 43017
Fax: 888-627-0074

Sheakley UniComp MCO

9987 Carver Rd. Suite 300
Blue Ash, Ohio 45242
Fax: 888-626-2667

Spooner MCO

28605 Ranney Pkwy
Cleveland, Ohio 44145
Fax: 800-542-9480

Your MCOs, on day one

You will not be typing them in. During onboarding we load your MCOs — addresses, faxes, the CMS-1500 template each one uses — along with your folder names and your Word templates, so the payers you actually bill are there on day one. Included in every plan. After that they stay records you edit, never values compiled into the software.

A filled CMS-1500 with the Sheakley UniComp MCO payer block and fax number printed at the top

The Sheakley block and its fax, printed at the top of the form rather than typed — with four W-code lines below it totaling $106.47 in box 28. Synthetic claimant and claim number.

The routing, in one place

Who you bill, and what travels with the bill.

Ohio voc-rehab billing rules

Who you bill: The injured worker’s MCO. The employer chose it; the claim carries it. Not BWC.
One copy: MCO only. Do not also send it to BWC.
What goes with it: The CMS-1500 and the narrative tracking log. The report travels with the bill.
Channel: Fax is still the working channel for voc rehab. Keep the confirmation — it is your filing evidence.
Timely filing: One year in Ohio.
Codes: W-codes in tenths of an hour. The rates, current.
Underpayments: Start as a rebill or adjustment request to the MCO, not an appeal to BWC.
Unlisted services: The MCO prices them from your report, which is another reason the narrative goes with the bill.
Who funds it: Voc rehab is paid from BWC’s surplus fund, so your bills do not hit the employer’s premium experience.

Confirm all of this against BWC’s and each MCO’s own published provider materials before you rely on it. The primary sources: the BWC Provider Billing & Reimbursement Manual, Chapter 3 (PDF), the BWC MCO Report Card (PDF) and the BWC Provider Look-up.

Payer contact data goes stale. MCOs merge, rename and move: Sedgwick MCO is what CompManagement and CareWorks became; ProMedica is what HMS became. A number that was right last October can be dead this October, and nothing tells you except a bill that never gets paid. Re-check the fax on your own materials before a first bill to any payer, and when a payer goes quiet for a cycle.

This page is a practitioner’s reference, not official BWC guidance, and it carries the date it was checked for the same reason your bills carry the date they were filed.

The reason this list matters on a Friday

One check. Sixteen claimants. Three of them short.

$16.14

The gap on one line — small enough to read as rounding, on a check that covered sixteen people.

An MCO does not pay a bill. It pays a stack of them, on one check, across claimants who have nothing to do with each other, and the remittance is a column of numbers you match by hand against a week you filed a month ago.

In the week below, MinuteMen check #418702 covered sixteen claimants. Thirteen landed in full. Doe, Jane R.’s bill went out at $73.71 and came back at $57.57 — that $16.14 gap surfaced the moment the check was recorded, with the original form attached and ready to rebill inside the one-year window. Three of the sixteen came back short, grouped by MCO so you know who to call.

That is the whole argument for keeping payer routing as data rather than in your head. How the allocation works · How short-pays get caught.

The Bill Tracker: a week of bills grouped by MCO with a running short-paid count

One week’s bills grouped by MCO, with a running short-pay count in the toolbar rather than buried in the column. Synthetic caseload — and it is your own Bill Tracker workbook, still openable in Excel.

Not the MCO you were looking for

“My MCO changed its fax number last spring.”

Then you change it once, in one place, and every form and cover sheet from that minute on carries the new one. Payer details in Med Claims Pro are records you edit — name, address, phone, fax, the CMS-1500 template it uses — not values compiled into the software that we have to ship an update to fix.

The same is true when you take on a claimant whose employer picked an MCO you have never billed. Add the payer, and the claim form generates against it with its carrier block at the top. Nine MCOs is a small enough world that you will eventually meet all of them.

Questions about a payer setup before you buy anything? (302) 202-3172 — a person answers — or admin@onservice.us.

Questions, answered.

Which MCO do I bill for a given injured worker?

The employer’s MCO. Every Ohio state-fund employer selects one, and the claim carries it — so it is a fact about the case, not about the service. Get it wrong and the bill goes to a payer with no record of the claim. In Med Claims Pro the payer is attached to the case, and every form, fax and receivable row routes from there.

What is the MinuteMen MCO fax number for provider bills?

The provider fax printed on the MinuteMen OhioComp payer block is 888-644-7339, and the phone is 888-644-6266 (Cleveland). That is current as of July 2026, taken from a working practice’s CMS-1500 templates and BWC’s February 2026 MCO Report Card — confirm it against your own provider materials before a first bill, because payer contact data goes stale.

Why do four of the nine have no fax number listed?

Because we cannot verify one. We print a fax only where we can see it on a real payer block; for CorVel, 3-hab, OHL and ProMedica we have no confirmed provider fax, and guessing would be worse than leaving it blank. Call their provider line and ask for the vocational rehabilitation billing fax.

Do Ohio MCOs still accept faxed CMS-1500s?

Fax remains the working channel for voc-rehab bills, and the report has to travel with the bill. Send to the fax on your own provider materials and keep the transmission confirmation — with a one-year filing clock, that receipt is your evidence. Electronic billing to MCOs is on our roadmap, not something we ship today.

How many MCOs are there, and has that changed?

Nine are BWC-certified as of the February 2026 MCO Report Card, down from thirteen to fifteen in older BWC materials. The field consolidated: Sedgwick MCO is the former CompManagement and CareWorks; ProMedica is the former HMS. Two MCOs — CorVel and MinuteMen — manage roughly as many active claims as the other seven combined.

An MCO changed its address or fax. What do I have to do?

Edit the payer once. Every future form and cover sheet uses the new details, and previously filed bills keep what they were filed with, which is what an audit expects to see.

Is this directory official BWC information?

No. It is a practitioner’s reference, checked July 2026, assembled from BWC’s MCO Report Card and from payer blocks in real use. BWC’s own materials are the authority — verify before you rely on anything here.

15 minutes

See your own week run itself.

We load your state’s codes before the call, so you are looking at a caseload like yours inside the first two minutes — not a slide deck.