How a portable X‑ray business gets approved

The short version

A portable X‑ray supplier is a regulated Medicare supplier type. You cannot bill Medicare until CMS approves you, and that approval is the last gate, not the first.

Six things have to happen, in this order:

• Get an NPI from NPPES.
• Pay the application fee, then file the CMS‑855B and the CMS‑1880 with your Medicare Administrative Contractor.
• Receive the MAC's recommendation for approval.
• Pass a certification survey run by your state survey agency.
• Pass a Medicare site visit.
• Receive your approval letter, effective date, and CMS Certification Number from CMS.

Most write‑ups of this process stop at four steps and end with the state survey. That is wrong, and it is the kind of wrong that breaks a cash‑flow plan. Two more gates sit after the survey, and your effective date comes out of the last one.

The part most people get wrong is the timing, so read that section even if you skip the rest.

Before any of it: check who already covers your counties

This costs nothing and it should happen before you spend a dollar on equipment.

Find out how many portable X‑ray suppliers already operate in the counties you intend to serve. The answer changes your plan either way.

If the market is crowded, you need a reason a facility would switch to you. Turnaround time and after‑hours coverage are the usual ones. If the market is thin, that is worth knowing too, because a genuine coverage gap is the foundation of the access‑to‑care argument described later in this guide.

Stage 01

Get your NPI

Your National Provider Identifier comes from NPPES. It is free. Nothing downstream can start without it. CMS requires you to “obtain an NPI and furnish it on this application prior to enrolling in Medicare,” and notes that applying for the NPI is a process separate from Medicare enrollment. You cannot enroll first and add the NPI later.

Which entity type you need

Enroll the business, not yourself. But the NPI type follows your legal structure, not your intentions.

The CMS‑855B says applicants using it require a Type 2 NPI, the organizational entity type. If you operate as a corporation, a partnership, or a single‑member LLC with an EIN, that is you. Get a Type 2 NPI in the entity's legal business name.

There is one real exception and the form spells it out. For NPI purposes CMS treats a sole proprietor as an individual, not an organization. A sole proprietorship reports its Type 1 NPI on this same CMS‑855B, reports its SSN rather than an EIN, and may hold only one NPI. So an individual NPI is not automatically disqualifying. It is disqualifying only if you are actually a corporation, an LLC, or a partnership trying to enroll on a personal NPI.

Whichever applies, the legal business name and TIN on your CMS‑855B must match NPPES exactly. A mismatch stalls the application.

Pick the right taxonomy code

Your primary taxonomy is 335V00000X — Portable X‑ray and/or Other Portable Diagnostic Imaging Supplier. It is active in the current NUCC code set and there is no successor code.

Choose it carefully. Payers, CMS, and every directory key off your taxonomy. The wrong code makes you invisible to the people trying to find you. You get one primary code per NPI record.

Your NPI is also the point where you become listable. Directories that check against NPPES cannot carry you before you are enumerated, because there is nothing to check against. Once your record is live, claim your listings. It is the cheapest visibility you will ever get, and it takes minutes.

Stage 02

Enroll with Medicare

Two forms, not one. The application is the CMS‑855B, and for a portable X‑ray supplier CMS also requires the CMS‑1880, Request for Certification as a Supplier of Portable X‑Ray Services. File through PECOS online or on paper, to the Medicare Administrative Contractor for your jurisdiction.

An application fee is required, and it is paid before the application is submitted. Check the current amount before you file. CMS adjusts it every year.

Specifics that catch new applicants:

• You must declare a base of operations. The form defines it as where personnel are dispatched from, where the portable equipment is stored, and where vehicles are parked when not in use. It does not have to be your practice address, and you may report more than one.
• You report the geographic area you serve, not a list of individual facility addresses. The form takes city or town, county, state, and ZIP, with a check‑box to claim an entire state. ZIP codes are needed only where you do not serve a whole city or county.
• If you serve states handled by different MACs, you file a separate CMS‑855B in each MAC's jurisdiction.
• Vehicle documentation is narrower than most applicants assume. See below.

Get the PECOS questionnaire right. Answering it correctly is what populates the correct forms, including the CMS‑588 for electronic funds transfer.

The vehicle paperwork most applicants do not owe

The vehicle section of the CMS‑855B, and the health‑care related permits and licenses that go with it, applies only if services are rendered inside the vehicle. CMS expressly tells you not to report vehicles used only to transport equipment that is then used somewhere else.

That exclusion describes how most portable X‑ray suppliers work. CMS's own manual notes that a portable X‑ray supplier is usually a portable unit, with the equipment separate from and unattached to the vehicle. So if your technologists carry equipment into nursing homes rather than imaging patients in the van, you generally do not complete that section and do not submit vehicle licenses. Your MAC may still ask for registrations, because a supporting‑document checklist on the form refers to them broadly.

Your effective date is not your filing date

This is the single most misunderstood part of the process, and getting it wrong will wreck a cash‑flow plan.

A portable X‑ray supplier is a survey‑certified supplier type. That puts you on a different track from the one most enrollment guides describe. 42 CFR 424.520(a) says the effective date for suppliers requiring state survey or certification is specified in 42 CFR 489.13.

Under 489.13(b) your approval is effective on the date the survey is completed, and only if you met all applicable federal requirements on that date. If the survey finds deficiencies, 489.13(c) sets the date at the earlier of when you meet all conditions or when an acceptable plan of correction is received.

Stage 03

Wait for the MAC recommendation

Your state survey agency cannot perform the survey until it has received notice from the MAC that your application information has been verified and that the MAC is recommending approval. For a portable X‑ray supplier the MAC sends that recommendation to the state agency directly.

The agency is not frozen in the meantime. It can mail you the initial certification materials, and it may start planning an unannounced survey from your first contact. Call them early. Waiting for the letter before you introduce yourself wastes weeks.

This is also the step where an incomplete application costs you months, because corrections restart the review.

Stage 04

Pass the state survey

A state survey agency inspects you on CMS's behalf, unannounced. The surveyor inspects equipment, interviews staff, and reviews documents to judge whether the federal conditions for coverage are met.

Note what the state does and does not do. It recommends approval, typically on Form CMS‑1539. It does not certify you. That distinction is why two gates follow.

CMS does not bill you for the federal survey. It is performed under a federal agreement and federally funded. Two caveats. A few states are authorized to charge applicants for an initial Medicare survey if their federal survey budget runs short — Washington's rule says it will not charge a fee “as long as sufficient funding exists,” and Louisiana law allows a fee in that situation. And the free federal survey is separate from your Medicare application fee and from any state licensure or radiation‑machine registration fees, which you pay regardless.

Stage 05

Pass the site visit

Once the state recommends approval, the MAC orders a Medicare site visit, performed by the National Site Visit Contractor, within five business days of receiving that recommendation.

Medicare billing privileges cannot be conveyed before the site visit is completed and the MAC has reviewed the results. Failing it leads to denial. This is a second, separate inspection from the state survey, and it surprises people who thought the survey was the end.

Stage 06

Get approved

CMS's Provider Enrollment and Oversight Group assigns your effective date and your CMS Certification Number and clears the approval letter. The MAC then issues the letter and switches your PECOS record from approval recommended to approved.

Now you may bill.

What carries you across the gap

Medicare approval is the destination. It is not your only revenue.

While you wait in the survey queue you are already operating, and the work you can do in that window is what funds the wait. Direct facility contracts, private‑pay work, and cash‑pay imaging do not require Medicare approval. Neither does serving a facility that bills under its own arrangement.

Which means the practical problem during the runway is not regulatory. It is that nobody knows you exist yet.

Do three things while you wait:

• Get listed everywhere a facility might look. Directories, your state association, local nursing home networks.
• Publish your actual coverage area by county, not by city. Facilities search by county.
• Publish your turnaround commitment in plain numbers. It is the single thing a director of nursing compares.

What the survey actually checks

The federal conditions for coverage sit at 42 CFR Part 486, Subpart C. There are six. Every one of them is a pass or fail condition.

The supervising physician, and what the standard really says

Your services must be supervised by a licensed MD or DO who is qualified by advanced training and experience in the use of X‑rays for diagnostic purposes. It is widely written that this means board certification in radiology or the equivalent. That is only one of three routes the regulation gives you.

Under 486.102(b), the physician either:

• is certified in radiology by the American Board of Radiology or the American Osteopathic Board of Radiology, or possesses qualifications equivalent to those required for such certification; or
• is certified in, or meets the requirements for certification in, another medical specialty in which they became qualified by experience and training in the diagnostic use of X‑rays; or
• specializes in radiology and is recognized by the medical community as a specialist in radiology — no board certificate required.

That third route matters if you are recruiting in a thin market. You are not strictly limited to board‑certified radiologists.

Separately, 486.102(a) governs how the supervision is arranged. One of two things has to be true:

• The supervising physician owns the equipment and only their own employees operate it.
• Or the physician certifies annually that they periodically check the procedural manuals and observe the operators' performance, that they have verified that equipment and personnel meet applicable federal, state, and local licensure and registration requirements, and that safe operating procedures are used.

Read that annual certification for what it is. It is the alternative to the physician owning the equipment. It is not a route to becoming a qualified supervising physician, and there is no annual attestation that gets you around the qualification standard. By the plain terms of 486.102(a) it is available only to a physician who already meets 486.102(b). If you are not a physician yourself, you need a qualified physician and that certification in writing every year.

Three registrations, not two

Section 486.100 carries three separate licensure standards, and applicants routinely remember only the last two.

• The supplier. In any state whose law provides for licensure or registration of suppliers of X‑ray services, you must be licensed or registered, or approved as meeting those standards. Some states have no such scheme, in which case there is nothing to file.
• The personnel. Everyone operating portable X‑ray equipment must be currently licensed or registered under applicable state and local laws.
• The equipment. Every piece of portable X‑ray equipment must be licensed or registered under those same laws.

These are usually different filings with different agencies. All of them get checked.

One more that catches people: under 486.110, your X‑ray equipment and shielding must be inspected at intervals no greater than every 24 months, by a radiation health specialist who is on the staff of or approved by a state or local government agency. Keep the records. The surveyor asks for them.

Portable X‑ray supplier or mobile IDTF

Most new entrants do not realize this is a choice. The two enrollment paths carry different obligations.

CMS states both halves plainly: a portable X‑ray supplier does not have a supplier agreement, and it can be simultaneously enrolled as a mobile IDTF, though the two cannot bill for the same service.

The escape hatch, and how to earn it

Because initial surveys compete with everything else a state agency has to do, the wait can be long enough to threaten a new business. There are two ways it moves faster, and both turn on the same evidence.

The first is automatic and sits in the current Mission and Priorities Document. If more than 150 days pass after your MAC recommends approval with no deeming option available, your initial certification becomes a Tier 1 priority. So does a case where CMS has determined an access‑to‑care issue. The MPD is explicit that the provider is responsible for providing the information behind that determination.

The second is the older, discretionary route: asking CMS, through your state survey agency, to treat your initial survey as an exception to the normal priority. CMS's long‑standing description of it is that no special form is required and that “the burden is on the applicant to provide data and other evidence that effectively establishes the probability of serious, adverse beneficiary healthcare access consequences if the provider is not enrolled.”

Build the argument out of numbers

Notice the word CMS uses: probability. That is a quantitative word, and it tells you what kind of evidence lands. You are not being asked for a hardship story. You are being asked to show that a gap exists, how wide it is, and who is on the wrong side of it.

Two numbers do most of the work.

Suppliers per facility. Count the portable X‑ray suppliers already serving the county. Count the facilities that need the service — nursing homes, assisted living, hospice, home health. Write it as a ratio. One supplier for forty facilities is a different claim from one supplier for four.

Distance to the nearest supplier. For each facility you would serve, measure the distance to the nearest existing supplier's base of operations. Report the median and the worst case. A median of 12 miles is not an access problem. A median of 54 miles with three facilities past 90 is.

A count plus a distance beats an adjective because it can be checked and it can be ranked against other requests. Compare the two versions of the same claim:

Two habits make the file harder to dismiss.

• Always state the denominator and the source. Say what you counted, over what population, and where the count came from. A number without its source is just an adjective with a digit in it.
• Give the trend, if you have it. If facilities in the county are waiting longer than they were a year ago, say by how much, and say who told you.

Do not model anything. Nobody is asking for a forecast, and a projection you cannot defend weakens a file that numbers would have carried.

Your state will differ

The federal rules above are the spine. State rules vary a great deal, and they are where most of the surprises live.

Some states do not license portable X‑ray suppliers at the business level at all. Louisiana is one: the Department of Health states plainly that portable X‑ray suppliers are not licensed by the State of Louisiana. But read that carefully, because no state license does not mean no state agency to satisfy. The same department's Health Standards Section is the CMS state survey agency for Louisiana, and it is the body that performs the federal certification survey you still have to pass.

Two things to look up before you file anything:

• Your state's radiation control program, for X‑ray equipment registration.
• Your state's licensing or registration board for radiologic technologists.

Find both, in writing, before you buy a unit. Equipment registration requirements can affect which unit you buy.

This guide is informational. It is not legal, regulatory, or reimbursement advice, and it is not a substitute for guidance from your Medicare Administrative Contractor, your state survey agency, or your own counsel. Federal and state requirements change. Application fees, survey priorities, effective‑date rules, and state licensing rules in particular change without much notice — the survey priority tier for portable X‑ray initial certification changed between the 2025 and 2026 editions of CMS's Mission & Priorities Document. Verify every requirement against the primary sources listed above and against your own MAC before you file. Published 25 July 2026.