Andrea Rizzo
Fullerton
Summary
Strategic and solutions-oriented HR & Administrative Operations Leader with 10+ years of experience supporting executive teams, managing credentialing and compliance processes, overseeing HR functions, and optimizing office operations. Recognized for building efficient workflows, improving documentation accuracy, strengthening communication across departments, and delivering high-quality support in fast-paced environments. Trusted by leadership for discretion, organization, and the ability to anticipate needs before they arise. Seeking a leadership role where I can drive operational excellence and support organizational growth.
Overview
13
13
years of professional experience
Work History
Credentialing Specialist
SMILE BRANDS Inc.
02.2022 - 04.2025
- Oversaw end-to-end credentialing operations for new and existing providers, ensuring compliance with organizational and regulatory standards.
- Managed high-volume CRC files, reviewed application responses, and prepared required exhibits and documentation for contracts.
- Led re-credentialing cycles, maintaining accurate records, updated attestations, and timely renewals.
- Strengthened internal processes by identifying gaps, improving documentation accuracy, and reducing delays in provider onboarding.
- Collaborated with HR, operations, and compliance teams to support seamless provider integration.
- Maintained strict confidentiality and upheld quality standards across all credentialing workflows.
Administrative Assistant / HR / Personal Assistant
Mirage Builders’ Construction Company
07.2015 - 11.2021
- Supported HR and administrative operations, including payroll data entry, employee scheduling, vacation tracking, and onboarding support.
- Managed Accounts Receivable, invoice processing, and financial documentation to support accurate reporting.
- Served as a trusted assistant to the company owner, coordinating travel, preparing spreadsheets, and managing confidential information.
- Implemented organizational systems that improved office efficiency and communication.
- Set up and configured iPhones and iPads for office staff and union workers, ensuring smooth onboarding and device readiness.
- Oversaw office supply procurement, vendor coordination, and day-to-day administrative operations.
- Recognized for reliability, ethical conduct, and proactive problem-solving.
Financial Assistant
Mapperarti USA LLC
Corona Del Mar
10.2014 - 06.2015
- Supported HR and office management functions, including payroll assistance, bank deposits, and financial recordkeeping.
- Managed Accounts Receivable and collections, improving payment timeliness and reducing outstanding balances.
- Processed monthly payments, generated invoices, and maintained accurate financial documentation.
- Provided general administrative support to ensure smooth daily operations.
Accounting
Local Lighthouse Corp.
Tustin
06.2012 - 05.2014
- Managed Accounts Receivable, resolved disputes, and communicated with financial institutions to maintain accurate records.
- Created invoices for overdue balances and processed monthly client payments.
- Completed bank reconciliations and supported financial reporting.
Skills
- HR Operations
- Employee support
- Administrative Leadership
- Credentialing
- Compliance
- Accounts Receivable
- Financial Coordination
- Process Improvement
- Workflow Optimization
- Executive Support
- Calendar Management
- Onboarding
- Device Setup
- Vendor Management
- Office Management
- Communication
- Cross-Functional Collaboration
- Confidentiality
- Professionalism
- Microsoft 360
- Sage 300 Construction
- Troubleshooting
- scheduling systems
- Document management
- Spreadsheets
- Communication platforms
Timeline
Credentialing Specialist
SMILE BRANDS Inc.
02.2022 - 04.2025
Administrative Assistant / HR / Personal Assistant
Mirage Builders’ Construction Company
07.2015 - 11.2021
Financial Assistant
Mapperarti USA LLC
10.2014 - 06.2015
Accounting
Local Lighthouse Corp.
06.2012 - 05.2014