Reimbursement Customer Service Specialist

About Castle Biosciences, Inc.

Castle Biosciences has been recognized with the 'Top Workplaces USA Award' for its offices in Phoenix, Pittsburgh, and Friendswood. The company is committed to improving patient outcomes through innovative, laboratory-developed tests that inform disease management and treatment decisions based on a person's unique biology.

At Castle, every employee has a direct impact on patient care, fostering a culture of integrity, respect, trust, transparency, and collaboration. The company prioritizes and encourages internal growth and professional development.

Why Join Our Team?

Castle Biosciences is expanding and is seeking a full-time Reimbursement Customer Service Specialist to work remotely from a home office located in the USA, with a start date of February 23, 2026. This role offers an exceptional benefits package, including:

• Annual Salary: $46,000.00 - $47,277.00 (based on Experience and Education levels)
• 20% Bonus Potential
• 20 Accrued PTO Days Annually
• 10 Paid Holidays
• 401K with 100% Company Match up to 6%
• 3 Health Care Plan Options + Company HSA Contribution
• Company Stock Grant Upon Hire
• $75/month reimbursement for internet service

A Day in the Life of a Reimbursement Customer Service Specialist

As a Reimbursement Customer Service Specialist, you will be the primary point of contact for incoming calls and email inquiries from a diverse group, including patients, clinicians, insurance plans, and area sales managers. Your main responsibility will be to provide comprehensive support for insurance billing-related questions and to educate callers on reimbursement processes, billing policies, and the necessary documentation required for appeals and medical record submissions. The majority of your time will be dedicated to managing inbound communications, ensuring all responses are timely, accurate, and provide clear guidance to both internal and external stakeholders.

Requirements

• Minimum of three years of customer service experience, preferably in a call center environment
• Minimum of two years of health insurance billing with experience in identifying and resolving claim issues
• Experience collaborating with patients, providers, and insurance plans throughout the billing cycle
• Experience researching and utilizing payor websites
• Certification in Medical Billing and/or Coding or equivalent experience
• Must demonstrate the ability to type 35 WPM with 90% or higher accuracy

Schedule & Work Authorization

This is a non-exempt, full-time position with a schedule of Monday - Friday, 8:00 AM to 5:00 PM, working remotely from your home office based in the USA.

All candidates must be legally authorized to work in the United States. Castle Biosciences currently does not sponsor H-1B visas, OPT, or employment-related visas.

Key skills/competency

• Customer Service
• Medical Billing
• Insurance Claims
• Reimbursement Processes
• Claims Resolution
• Patient Communication
• Email Management
• Call Center Operations
• Payor Website Navigation
• Documentation Handling