Hiring a NEMT biller: a skills test built from a real remittance, current pay figures, and the first 30 days

The weekly work a NEMT biller owns

An in-house biller turns finished rides into money and keeps track of every dollar that has not arrived yet. The mix depends on who pays your trips, but the job usually covers six tasks:

• Broker submissions. Confirming completed trips and submitting them in each broker’s portal before its deadline.
• Medicaid and plan claims. Building 837P files or entering claims in the state or plan portal for trips billed directly.
• Payment posting. Matching each remittance or broker statement to the trips it paid, line by line.
• Denials and rejections. Finding the cause, fixing it, and resending or appealing before the filing limit runs out.
• Pre-ride checks. Confirming eligibility and the authorization or trip number when the office books a ride, so the claim can be paid later.
• Follow-up. Working the receivables list each week, oldest and largest balances first.

Some decisions should stay with the owner: write-offs, refunds, repayments to payers, and any change to where payers deposit money. The internal controls guide explains how to split those duties in a small office.

Test with a real remittance, not interview questions

A candidate who can talk about billing may still post a remittance wrong. The fastest way to tell is to hand them the work itself and an hour.

Build the packet

Start from a real payment your company received, then replace every rider name, ID number, address, and date with invented ones. A candidate is not part of your workforce yet, and HIPAA’s de-identification standard treats names, places smaller than a state, and dates tied to a person as identifiers. Then assemble three exercises:

1. A six-line remittance to post. Two lines paid in full, one reduced with reason code 45 (charge exceeds the fee schedule), one denied with code 18 (exact duplicate), one with code 29 (filing time limit expired), and one with code 197 (authorization absent). The candidate posts each line and writes the next step.
2. Two trip records to bill. One is a round trip with miles and a recorded wait. The candidate fills in the claim lines: codes, units, modifiers, the authorization number, and the billing NPI in item 33a of the paper form.
3. A broker statement that does not match its deposit. One line is off. The candidate finds it and explains what to ask the broker.

Let candidates use the payer’s manual and the X12 code list during the test. The real job is open book, and how they look things up is part of what you are measuring.

Score it

Good answers sound like this. Code 45 under group code CO is a contractual adjustment to post and write off, not a claim to resend. Code 18 means checking whether the original claim paid before doing anything else, and never sending a third copy. Code 29 usually stands unless the biller can prove the claim went in on time, such as with an earlier acceptance report. Code 197 means checking the trip or authorization number and asking the broker or plan whether a retro authorization is possible. Weight accuracy over speed, and give extra credit for good questions: a candidate who asks which payer issued the remittance is thinking like a biller.

What billers earn

Pay depends heavily on which industry the data comes from. Federal wage data for May 2025 shows billing clerks in the transit group that includes special needs transportation earning well below the national median for the same job:

The transit row covers industry group 4859, which includes special needs transportation (NAICS 485991). Only 330 billing and posting clerks were counted there, against 404,060 nationally, so treat it as a floor rather than a market rate. The ambulatory health care row includes ambulance services (NAICS 621910). The middle half of billing and posting clerks nationally earned $42,840 to $58,290 a year.

The wage is not the whole cost. Add the employer’s payroll taxes, any benefits, and the cover you need for vacations. The billing service guide compares that total with outsourcing, and the overtime rules for office staff are in the dispatcher hiring guide.

Credentials worth paying for

A billing credential is a plus, not a requirement. AAPC’s Certified Professional Biller (CPB) and NHA’s Certified Billing and Coding Specialist (CBCS) both cover claim forms, remittances, payer rules, and compliance. Both also expect clinical coding knowledge that a ride claim rarely uses: 32 of the CBCS exam’s 100 scored items cover coding, mostly anatomy, ICD-10-CM, CPT, and visit levels.

For a transportation-only office, three things usually predict success better:

• Experience in your state’s Medicaid claim system or with one of your brokers’ portals
• Hands-on payment posting from electronic remittances, not only claim entry
• A strong score on the remittance test above

If you plan to pay for a credential after hire, the billing training guide compares the two exams, their prices, and what each takes to keep.

Screen and train before the first login

Two checks come before a new biller touches a single claim.

Exclusion screening. OIG’s 2013 bulletin on the effect of exclusion bars excluded people from administrative work for providers paid by federal health programs, and it names billing and accounting. Search the OIG list and your state’s Medicaid exclusion list before you make the offer, then every month. OIG updates its list monthly and says monthly screening best limits overpayment and penalty exposure. Keep a printout or screenshot of each search. Employing an excluded person can bring penalties of up to $20,000 per item or service under 42 CFR 1003.210, before inflation adjustments. The exclusion screening log keeps the record.

HIPAA training. Under 45 CFR 164.530(b), a new hire gets trained on your privacy policies within a reasonable period of starting, and you keep proof that the training happened. Some states set a firm deadline. Texas, for example, requires training within 90 days of hire and a signed completion statement kept for six years (Health and Safety Code 181.101). Have the biller sign a confidentiality agreement on day one as well.

Set up access so no one person holds everything

Give the new biller a login of their own for every system: each payer portal, each broker portal, the clearinghouse, and your trip system. The HIPAA Security Rule requires a unique user ID for anyone using systems that hold electronic health information. Never hand over the owner’s login. Keep the owner’s account as the only one that can sign agreements or change where payers deposit money.

Then limit what the role can do. A biller needs claims, remittances, and trip records to read. A biller does not need to edit completed trips, change payer deposit accounts, or approve their own write-offs. On the day a biller leaves, turn off every login the same day, including portals they used from home.

Checkpoints for the first 30 days

A new biller should be working mostly alone by the end of the first month, with the owner checking results instead of every claim. The learning order is in the billing training guide. Use these checkpoints to see whether it is working:

1. End of week 1. Every login works, every payer is on a written list with its filing limit, and the biller has shadowed a full billing cycle.
2. End of week 2. The biller has sent at least one batch for each payer, with every claim reviewed before it went out.
3. End of week 3. The biller posts remittances on their own, and you spot-check a sample against the deposits.
4. Day 30. Measure four numbers: completed trips not yet billed, average days from ride to claim, the share of claims rejected or denied on the first pass, and denials still open. Compare them with where you started.

If the numbers are not moving by day 30, look first at the source records before blaming the hire. Late or incomplete trip data slows every biller.

Giving a new biller clean records

A biller’s first month goes better when trip data arrives complete. In HealthRide, a new biller gets a login that sees only what the role allows, and every change anyone makes is recorded. Each finished ride carries its GPS-recorded miles, timestamps, signature, and any no-show wait, so questions about a trip get answered from the record. Private-pay and facility invoices and their payments sit in one ledger.