Question
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Billing Administrative Assistant

2/6/2026

The Billing Administrative Assistant is responsible for maintaining client financial records, processing payments, and managing authorizations. The role involves collaborating with various teams to resolve billing issues and ensure compliance with regulations.

Salary

20 - 25 USD

Working Hours

40 hours/week

Company Size

201-500 employees

Language

English

Visa Sponsorship

No

About The Company
At Mountainside Treatment Center, a nationally acclaimed drug addiction treatment and alcohol rehabilitation center, we believe that you can make a difference no matter the position you hold. Each employee plays an important role in caring for clients, giving them a unique and positive experience during their stay. Founded in 1998, Mountainside is a leading provider of chemical dependency treatment services. We have locations in Connecticut (Canaan and Wilton), New York (Manhattan, Chappaqua and Huntington) and New Jersey (Ramsey). We also serve Massachusetts virtually. More about our company can be found at http://mtsi.de/treatment. You may also call 888-510-8852 (toll-free). ===== CONNECT WITH MOUNTAINSIDE: Facebook: http://www.facebook.com/mountainsidetreatment Instagram: http://www.instagram.com/mountainsidect Twitter: http://www.twitter.com/mountainside
About the Role

Description

Billing Administrative Assistant (Hybrid)New York, NY 


About the Position:


The Billing Administrative Assistant plays a critical role in supporting outpatient services by ensuring accurate, timely, and compliant billing and financial processes. This position is responsible for maintaining client financial records, processing payments, managing authorizations and coverage information, and serving as a knowledgeable point of contact for billing-related inquiries. The role collaborates closely with admissions, clinical, utilization review, and site staff to proactively identify and resolve billing issues, minimize financial barriers to care, and ensure a high standard of service, confidentiality, and regulatory compliance. This position is primarily remote but requires occasional on-site work at our NYC office. The applicant must reside in NY, NJ, CT, or MA to qualify for this position. 


Schedule:


Monday - Friday: 8:30 AM - 5:00 PM


Your Role:

  • Ensure all Payment Pages are properly completed and signed in accordance with facility and payer requirements.
  • Enter and maintain accurate funding sources, authorizations, alerts, and fee schedules within the billing system.
  • Process client payments timely and accurately, ensuring all transactions are properly documented and reconciled.
  • Prepare and submit no-show billings in accordance with payer rules and internal policy.
  • Respond professionally to client and payer questions or concerns related to billing, balances, and coverage.
  • Audit insurance cards and identification on file for accuracy and completeness (scanning and collection remain the responsibility of reception).
  • Provide support with Verification of Benefits (VOB), Coordination of Benefits (COB), and COBRA inquiries.
  • Manage plan renewals and ensure coverage updates are reflected promptly in the system.
  • Maintain regular communication with NYC site staff regarding financial barriers, authorization issues, and necessary client interventions.
  • Review client accounts to ensure all financial documentation is completed, signed, and uploaded at the time services are rendered.
  • Collaborate closely with admissions, clinical, utilization review, and administrative teams to resolve billing-related issues efficiently.
  • Identify and escalate potential coverage gaps, payment concerns, or authorization problems to leadership in a timely manner.
  • Maintain compliance with payer contracts, regulatory requirements, and internal billing policies and procedures.
  • Assist with auditing financial records, reports, and documentation to ensure accuracy and readiness for internal or external review.
  • Provide clear, compassionate communication to clients regarding financial responsibilities while maintaining strict confidentiality standards.

Qualifications:

  • High School Diploma or Equivalent - Required
  • Must have proficient computer skills including competence in software applications such as Microsoft Office suite, Adobe and use of internet applications
  • Ability to work both independently and collaboratively as necessary.
  • Strong oral and written communication skills
  • Excellent organization and time management skills.
  • Strong problem-solving and follow-up skills; must be proactive and take initiative

Compensation:


The base rate of pay for this position is $20.00 to $25.00 per hour. Actual pay is determined based on a number of job-related factors including skills, education, training, credentials, experience, scope and complexity of role responsibilities, geographic location, performance, and working conditions.


Benefits:

  • Comprehensive benefit package
  • Paid Time Off (which increases after 1 year with Mountainside)
  • Paid holidays including a Multicultural Holiday
  • 401(k) with employer matching
  • Monthly $75.00 wellness reimbursement. Our Wellness Reimbursement benefit is meant to encourage employees to engage in productive self-care to avoid burnout and compassion fatigue.

About Mountainside:


Mountainside Treatment Center is a dynamic, fast-paced and growing recovery facility that values innovation and an obsession with providing Best in Class service to our Clients. Founded in 1998, we are a leading behavioral healthcare provider dedicated to treating alcohol dependency and drug addiction. Accredited by The Joint Commission and CARF for its high standards of care, Mountainside seeks out passionate and talented individuals to join its staff. We believe that every employee, regardless of position, plays a vital role in our success.


Here at Mountainside Treatment Center, we strongly prefer all employees to be fully vaccinated for Covid-19 (including regularly scheduled boosters) and the Flu as recommended by the CDC.
Mountainside is an equal opportunity/affirmative action employer and strongly encourages the applications of women, minorities, and persons with disabilities.
Key Skills
BillingFinancial RecordsPayment ProcessingClient CommunicationProblem SolvingTime ManagementOrganizationRegulatory ComplianceCollaborationDocumentationAuditingInsurance VerificationConfidentialityInitiativeProactive ApproachAttention To Detail
Categories
HealthcareAdministrativeFinance & AccountingCustomer Service & Support
Benefits
Comprehensive Benefit PackagePaid Time OffPaid Holidays401(k) With Employer MatchingWellness Reimbursement
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