Dennis Mariah

I’m a results-driven E-commerce Customer Service Representative with proven experience supporting online retail operations through chat, email, and CRM platforms. I’m known for adaptability, fast learning, and excellence in remote, AI-driven, performance-metric-focused environments.

In my e-commerce role, I deliver high-quality text-based customer support using Gorgias, handling live chat and email inquiries with speed and accuracy. I manage high-volume customer interactions while meeting response-time SLAs and customer satisfaction targets.

I strengthen customer retention through personalized engagement and brand-aligned communication. I also process returns, refunds, and exchanges with ReturnLogic, manage tickets and customer history in Zendesk, and use Shopify for order management, payments, and customer data—ensuring data accuracy and privacy compliance.

I bring additional expertise in Revenue Cycle Management (RCM) and Medical Billing, including insurance verification, eligibility checks, claim status follow-ups, and resolving denials and underpayments through appeals and corrective actions. I apply medical coding standards (CPT, ICD-10, HCPCS) and use platforms such as Athena (Centricity), Imagine, ModMed, Change Healthcare, Availity, Instamed, and E-processing, supporting Accounts Receivable (AR) management to improve revenue collection.