Lorena Vaca

Highly dependable, organized, and adaptable Customer Service Professional with over 20 years of experience spanning transportation logistics, medical laboratory administrative support, and high-volume account billing. Proven expertise in managing high-volume incoming phone systems, handling complex reservation databases, and coordinating passenger trip scheduling. Excellent at providing empathetic, accurate assistance to passengers and clients while strictly adhering to compliance standards and regulatory procedures.

Reservationist - MTM Transit - Tracy, CA

(2026-04)

• Manage high-volume incoming calls, providing prompt, professional, and helpful customer support to passengers.
• Coordinate daily trip logistics and scheduling, accurately documenting trip requests and strategically selecting the most efficient routes.

Lab Assistant II - Sutter Health Shared Lab - Livermore, CA

(2013-11 - 2025-10)

• Delivered exceptional customer service to patients and healthcare professionals, directly addressing technical inquiries and clearly presenting test results.
• Collaborated cross-functionally with broader healthcare teams to streamline lab workflows, accelerate turnaround times, and elevate the standard of patient care.
• Managed and recorded detailed test results with high precision, ensuring data integrity and contributing to the peak efficiency of overall laboratory operations.
• Maintained a sterile, compliant working environment by strictly adhering to health regulations and safety protocols.

Administrative Assistant - Geyser Beverage - Livermore, CA

(2006-03 - 2013-10)

• Owned customer service functions, managing multi-line phone systems to address client questions, input new product profiles, and log updated account information.
• Processed daily transactions, entering presale orders submitted by sales representatives and accurately printing out invoices for next-day delivery routes.
• Managed financial balances and accounts receivable, reconciling end-of-day money received by field reps against internal system reports.
• Drove collections and account health by placing outbound calls on past-due customer accounts, posting received payments, and mailing monthly billing statements.

Administrative Assistant - Sears Home Improvement - Livermore, CA

(2006-01 - 2006-02)

• Managed client coordination, fielding multiple inbound phone lines and scheduling targeted face-to-face appointments for sales representatives.
• Digitized and organized physical records, scanning HVAC product orders, checks, and money orders received from field staff.
• Maintained office logistics, monitoring inventory levels and ordering necessary supplies to ensure uninterrupted daily business operations.

Chiropractic Assistant - Chau Chiropractic - Tracy, CA

(2002-02 - 2006-01)

• Interfaced directly with insurance providers, contacting standard and worker's compensation insurance companies to verify patient authorizations and coverage.
• Guided front-desk operations, answering high-volume phone lines, filing medical charts, organizing files for incoming patients, and placing confirmation calls.
• Administered patient care and payment logistics, posting and collecting daily co-pays while safely assisting patients onto traction beds and applying therapeutic equipment.

General Education / Coursework - Las Positas College

High School Diploma - Vineyard High School