Railroad Medicare Provider Enrollment: How to Get Your Railroad PTAN From Palmetto GBA

Railroad Medicare provider enrollment is the request for a separate Railroad Medicare PTAN from Palmetto GBA, the contractor that processes Part B claims for Railroad Retirement Board beneficiaries nationwide, made after you are enrolled in Medicare Part B with your local MAC; there is no CMS-855, and the Railroad PTAN takes the same effective date as your Part B PTAN. Most practices meet the requirement the day their first railroad retiree's claim comes back unpaid. This page is the whole process in one place, from Palmetto's own published pages.

If you are not yet enrolled in Medicare at all, start with Medicare provider enrollment (the CMS-855 filing sequence) and what PECOS is. Railroad Medicare comes after both.

Updated 2026-10-23. Reviewed by Jacob Greenberg, ClaimCarePro.

Railroad Medicare is ordinary Medicare Part B for people whose Medicare comes through the Railroad Retirement Board (RRB): retired railroad employees and often their dependents and survivors. The benefits are the same as for anyone else on Medicare. What differs is who pays the claim. The RRB's own booklet, Medicare for Railroad Workers and Their Families (RB-20), says Palmetto GBA “processes medical insurance (Part B) claims for railroad retirement beneficiaries in the Original Medicare Plan.”

Palmetto calls itself the Railroad Retirement Board Specialty Medicare Administrative Contractor (RRB SMAC) and says it processes Part B fee-for-service claims for Railroad Medicare beneficiaries nationwide. The CMS Claims Processing Manual, chapter 1, puts it the same way: while A/B MACs normally process Part B claims for a geographic area, “a single A/B MAC (Part B) processes all physician/supplier claims for railroad retirement beneficiaries.”

Three boundaries matter for billing:

• Part B only. Palmetto's Railroad contract covers physician and supplier (Part B) claims. Hospital (Part A) claims are not part of it.
• DMEPOS goes to the DME MACs. The same CMS chapter says suppliers of durable medical equipment, prosthetics, orthotics and supplies bill the DME MACs for these patients, not Palmetto.
• Medicare Advantage is the plan's. A railroad retiree in a Medicare Advantage plan is billed to that plan. Palmetto handles Original Medicare claims.

Palmetto's beneficiary article also addresses a misunderstanding it sees from practices: a provider that accepts Medicare Part B is accepting Railroad Medicare too. Saying “we take Medicare, but not Railroad Medicare” usually means the practice has never requested its Railroad PTAN.

Because Railroad claims are processed in Palmetto's system, not your local MAC's, and Medicare requires a PTAN in the system that processes the claim. Palmetto's FAQ says it directly: “Because Railroad Medicare is processing outside of your local MAC's systems, a unique PTAN is required for Railroad Medicare claims.” PECOS approval gives your local MAC a record. It does not give Palmetto one until you ask.

What you do not have to do is apply again. Palmetto's Provider Enrollment page says “There are no CMS-855 Enrollment forms required for Railroad Medicare.” When you request the PTAN, Palmetto verifies the enrollment on file with your Part B MAC and creates a corresponding Railroad Medicare file. That has two consequences worth planning around:

• Your MAC record is the application. Whatever your local MAC has on file (name, TIN, billing address, PTAN) is what Palmetto copies, or refuses to match.
• Your MAC status is your Railroad status. Palmetto says that if your Part B enrollment changes, “such as failure to revalidate, provider revocations, provider suspensions,” the same happens to your Railroad PTAN. There is no separate Railroad revalidation; it happens with the MAC (see re-credentialing and revalidation).

Federal rules make the PTAN a payment condition, not a formality. Under 42 CFR 424.505, a provider must be enrolled and issued a billing number to receive Medicare payment; Palmetto states it cannot process your claims until a Railroad PTAN is assigned.

Usually the same day through the online tool, and up to 30 calendar days when Palmetto has to research the request. Those are Palmetto's published standards from its PTAN tool article and FAQ. Add the 14-business-day wait after a new local MAC PTAN, and the 15 business days Palmetto publishes for processing EDI enrollment forms, and a brand-new provider should plan for the Railroad step to finish a few weeks after Part B approval.

The timing that costs money is not Palmetto's. It is the gap between Part B approval and the day someone notices a Railroad patient on the schedule. Because the Railroad PTAN's effective date is retroactive to the Part B effective date, a late request does not lose the early dates of service, but those claims sit unpaid until the PTAN and EDI enrollment are in place. Request it when the local MAC approval letter arrives, not when the first claim rejects.

For how this compares with Medicare, Medicaid and commercial timelines, see how long credentialing takes.

Railroad EDI enrollment is a second filing with Palmetto, and nothing pays electronically until it is done. Palmetto's Enroll in Electronic Claims Submission page offers the EDI Online Enrollment tool as the fastest route, or PDF forms by email or fax. Which forms depend on how you submit:

• Through a billing service or clearinghouse: the Billing Service / Clearinghouse forms.
• Directly to Palmetto: the Direct Submitter forms, which issue a Submitter ID. Palmetto's EDI enrollment packet says providers may not share that Submitter ID or password with a billing agent or clearinghouse.
• For the eServices portal: the EDI Enrollment Agreement.

The forms need the Railroad PTAN, provider name and address. Palmetto publishes rredi.enroll@palmettogba.com and fax (803) 382-2416 for submission and says completed forms are processed within 15 business days of receipt. Once EDI is approved, an eServices account gives you claim status, eligibility and remittances. Palmetto's Getting Started article adds that newly enrolled providers are set up for electronic funds transfer, after which paper checks stop.

Railroad Medicare Part B claims go to Palmetto GBA, filed under your Railroad PTAN and your NPI, through the EDI route you enrolled in. Electronic is the default: Palmetto cites the Administrative Simplification Compliance Act, which bars Medicare payment on paper claims except in limited cases, most commonly providers with fewer than 10 full-time-equivalent employees.

Payer ID. Payer IDs are assigned by each clearinghouse, so confirm the Railroad Medicare ID in yours. In the payer list our clearinghouse, Claim.MD, published in September 2026, Railroad Medicare is payer ID 00882. A claim built under your local MAC's payer ID goes to the wrong contractor no matter which PTAN is on it.

Paper. If you qualify for paper, Palmetto's claim filing instructions apply (original red-ink CMS-1500 forms, no dot-matrix printing, six service lines per form). We could not read Palmetto's current paper-claim mailing address page on October 23, 2026, so we do not print one here; take it from Palmetto's Railroad Medicare contact page.

Change it with your local MAC first, then tell Palmetto in writing. Palmetto's FAQ asks you to wait 7 to 14 business days after the MAC confirms the change, then send a request on provider or practice letterhead with the provider's name, Railroad PTAN, NPI, tax ID, contact information and what changed (for an address change, the old and new address and a copy of the MAC's confirmation). Palmetto publishes fax (803) 382-2415 and the mailing address Palmetto GBA Railroad Medicare, Attention: Provider Enrollment, PO Box 10066, Augusta, GA 30999.

Provider Enrollment does not take telephone requests to update a record. A billing agency or clearinghouse may submit the written update if the NPI, PTAN and tax ID are verified. Remember that Medicare mail uses “Return Service Requested” envelopes, so a post office forwarding order does not move remittances or checks; the record has to be updated.

We are working Railroad Medicare PTANs alongside Medicare, Medicaid and Availity files right now, including in Kentucky (see our Kentucky credentialing guide). The Railroad step is short when the Part B record is right, so most of our work happens before it:

• Part B first, filed clean. The CMS-855 that creates the local MAC record is the record Palmetto copies, so the name, TIN, billing address and reassignment are checked against the W-9 and the state license before filing.
• The exact identifiers, ready. Palmetto only accepts a Railroad PTAN request from the provider or the provider's own employee, so we do not submit it in your name. We give your staff the individual local MAC PTAN, the NPI and the TIN digits that match the MAC file, on the right date, and confirm the Railroad PTAN that comes back.
• EDI and record changes. We prepare the Railroad EDI forms for the route you bill through and send written enrollment updates to Palmetto after the MAC confirms a change, which Palmetto allows a billing agency to do.
• Weekly follow-up, logged. Every open file gets a weekly payer check with the representative, date and reference number recorded.

Prices are flat and published: $250 per payer application per provider, CAQH setup $250, re-credentialing $250, maintenance $99 per provider per year, and the new-practice bundle at $1,750 per provider ($1,400 for each additional provider on the same group and payers). See credentialing services for what each covers, and the payer-by-payer credentialing guides for the commercial plans, which (unlike Medicare) read your CAQH profile.