Accounts Receivable Specialist

Lumary

Accounts Receivable Specialist handling the collection of outstanding ABA claims at Lumary. Required skills include collections experience and knowledge of medical billing processes.

Posted 6/19/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

About the role

Key responsibilities & impact

Own and work the aged accounts receivable, prioritizing the highest-value and oldest outstanding claims to maximize collection.
Investigate unpaid, underpaid, and denied claims, determining root cause and pursuing resolution directly with payers.
Manage the full denials and appeals process, ensuring denials are addressed promptly and appeals are pursued through to outcome.
Conduct payer follow-up by phone and portal, escalating and documenting each step until claims are resolved.
Identify and report developing claim issues, denial trends, and payer patterns, escalating to leadership with recommendations.
Review and manage overpayments, initiate recoupment processes when necessary, and ensure payers post reconciliations appropriately.
Audit each month in the quarter for missed billing, unacknowledged claims, and aging that requires action.
Coordinate with providers to write off uncollectable claims only after a thorough appeals and collection effort.
Provide support with primary and secondary claim submission and payment posting as needed.
Monitor and address assigned tasks in Lumary, including provider communications.

Requirements

What you’ll need

Collections or accounts receivable experience is required. You have a track record of working aged AR, denials, and appeals - ideally in a medical billing or healthcare RCM setting.
Strong investigative ability. You dig into the details, ask the right questions, and don't stop until you've found why a claim isn't paying and resolved it.
Strong understanding of the medical claim lifecycle, denials management, and payer reimbursement processes.
Confident and persistent in payer follow-up and appeals, with excellent documentation and follow-through.
Familiarity with ERA/EOB processing and electronic claim submissions.
Prior experience in Medicaid billing.
Experience in ABA or behavioral health billing is a plus.
Detail-oriented with a high level of accountability and a solutions-first mindset, collaborating with senior team members to find resolutions.

Benefits

Comp & perks

Flexibility to work from home and the office - hybrid working environment if based at an office location in Denver, alternatively fully remote if not based near Denver
Flexible start and finish times - have a routine but on the days you need to book an appointment or finish early, go for it
Monthly town halls for connection and company alignment
Monthly dedicated Social Connection days
Quarterly employee engagement surveys (currently at 82% engagement and trending upwards)
Internationally growing company working towards a purposeful vision: Empowering sustainable healthcare

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

accounts receivablecollectionsdenials managementappeals processmedical claim lifecyclepayer reimbursement processesERA processingEOB processingelectronic claim submissionsMedicaid billing

Soft Skills

investigative abilityattention to detailaccountabilitysolutions-first mindsetcollaborationpersistencedocumentation skillsfollow-through