Demo

Executive Assistant

OneSource Medical Diagnostics LLC / Expert MRI
Costa Mesa, CA Full Time
POSTED ON 6/7/2026
AVAILABLE BEFORE 8/6/2026

Join Expert MRI ? Where Healthcare Leadership Meets Execution

At One Source Medical Diagnostics, we're more than an imaging provider?we're a growing organization focused on delivering exceptional patient care, operational excellence, and strategic growth across multiple locations.

We're seeking an experienced Executive Assistant to serve as the trusted right hand to our Chief Executive Officer (CEO).

Let's be honest?this isn't a typical administrative role.

We're looking for someone who thrives in the middle of the action. Someone who can keep priorities organized, projects moving, leaders accountable, and communication flowing across the organization. If you're highly organized, proactive, and enjoy turning ideas into execution, this could be the opportunity you've been looking for.

Why This Role Matters

The CEO is responsible for driving the organization's vision, growth, and operational strategy. Your role is to ensure those priorities don't get lost in the day-to-day. You'll serve as the operational backbone behind executive leadership, helping coordinate initiatives, track deliverables, facilitate communication, and keep critical projects moving forward. Your ability to anticipate needs, manage competing priorities, and drive follow-through will have a direct impact on the success of the organization.

What You'll Get

  • Competitive compensation
  • Opportunity to work directly with executive leadership
  • Exposure to strategic business initiatives and organizational growth
  • High-visibility role with meaningful impact
  • Collaborative and fast-paced healthcare environment
  • Professional growth opportunities within a multi-site organization

What You'll Be Doing

Executive & Leadership Support

  • Manage complex calendars, scheduling priorities, and executive communications
  • Prepare reports, presentations, agendas, and briefing materials
  • Anticipate leadership needs and proactively support executive initiatives
  • Optimize the CEO's time and focus on high-priority objectives

Meetings & Follow-Through

  • Coordinate meetings involving leadership teams, operations, vendors, and external stakeholders
  • Prepare meeting materials and ensure attendees are prepared
  • Attend meetings, capture key decisions, and document action items
  • Distribute meeting summaries and follow-up communications
  • Track commitments and ensure deadlines are met

Project & Operational Coordination

  • Support organizational initiatives and operational improvement projects
  • Maintain project trackers, timelines, and status updates
  • Coordinate activities across multiple departments and locations
  • Help drive accountability and execution throughout the organization

Communication Management

  • Manage and prioritize executive communications
  • Draft professional correspondence and responses
  • Identify urgent matters requiring immediate attention
  • Serve as a liaison between leadership, staff, vendors, and external partners

Sales & Business Support

  • Assist with sales and business development initiatives
  • Coordinate proposal development, client communications, and pipeline follow-up
  • Support cross-functional activities that contribute to organizational growth
  • Help ensure seamless execution of customer and operational objectives

Compliance & Documentation

  • Maintain tracking systems for key organizational deadlines and reporting requirements
  • Assist with audit readiness and document management
  • Maintain organized records and supporting documentation
  • Ensure important deliverables and compliance-related activities remain on schedule

What We're Looking For

  • 3 years of executive assistant, project coordination, healthcare administration, or leadership support experience
  • Exceptional organizational and time management skills
  • Ability to manage multiple priorities in a fast-paced environment
  • Strong written and verbal communication skills
  • High level of professionalism, discretion, and confidentiality
  • Strong follow-through and accountability mindset
  • Ability to work independently while collaborating across departments
  • Proficiency with Microsoft Office Suite and virtual meeting platforms

Bonus Points For

  • Healthcare industry experience
  • Experience supporting C-suite or executive leadership
  • Multi-site healthcare or service organization experience
  • Project management or operational coordination experience
  • Familiarity with process improvement, compliance tracking, or organizational initiatives

The Bottom Line

We're looking for someone who doesn't just manage calendars?we're looking for someone who helps drive execution. If you're energized by organization, communication, project coordination, and being the person who keeps everything moving behind the scenes, we'd love to hear from you.

Benefits

  • Medical, Dental & Vision Insurance
  • Life Insurance & AD&D
  • Short-Term & Long-Term Disability
  • Employee Assistance Program (EAP)
  • Paid Time Off
  • Paid Sick Time
  • Paid Holidays
  • 401(k)

About Expert MRI

Expert MRI is a leading outpatient radiology provider serving patients and referring physicians throughout Southern California. We are committed to delivering exceptional diagnostic imaging services while fostering a culture of teamwork, accountability, and excellence.

Website: www.expertmri.com

One Source Medical Diagnostics / Expert MRI is an Equal Opportunity Employer.

Salary.com Estimation for Executive Assistant in Costa Mesa, CA
$75,972 to $97,015
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