Administrative & Client Relations Specialist with Financial

Cassandra Castellar

Lawrenceville, GA 469-***-**** 570-***-**** *********@*****.***

Professional Summary

Detail-oriented administrative and customer service professional with experience in office management, client relations, financial coordination, and data management. Proven ability to manage high-volume customer interactions, maintain accurate records, and support daily business operations in fast-paced environments. Recognized for strong communication skills, problem solving, and the ability to build positive relationships with clients and team members.

Core Skills

Customer Service Client Relations Cash Handling Account Support Scheduling & Coordination Data Entry Microsoft Office Suite Administrative Support Conflict Resolution Record Management Insurance Verification Billing Support Bilingual Spanish

Professional Experience

Business Assistant Suwanee Dental Care — Suwanee, GA 2026 – Present

• Manage front office operations including scheduling, customer service, and record management.

• Assist clients with payment processing, billing questions, and financial coordination.

• Maintain accurate records and documentation using computerized management systems.

• Handle high volumes of phone calls while providing professional customer support.

• Coordinate communication between clients and service providers to ensure smooth operations.

Treatment Coordinator D4C Dental Brands May 2024 – Present

• Serve as primary point of contact for clients regarding services, scheduling, and financial information.

• Verify benefits, coordinate services, and ensure accurate documentation.

• Provide clear explanations of service costs and payment options.

• Maintain organized digital records and support office administrative tasks.

Office Manager Omni Health Services Inc. December 2020 – March 2023

• Managed daily administrative operations including scheduling, billing, and record management.

• Trained new staff and improved office workflow efficiency.

• Ensured compliance with company policies and confidentiality standards.

Associate Manager Kmart March 2013 – December 2017

• Supervised team members and supported store operations in a high volume retail environment.

• Managed cash handling, customer service issues, and daily reporting.

• Helped drive sales performance and maintain strong customer satisfaction.

Education

GED Adult Alternative School

Languages

Spanish — Native / Bilingual

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