Team
Dr. Maysam Riadh, MD
Medical Director, Event Services Response
Dr. Maysam Riadh is a board-certified internal medicine physician with over 10 years of clinical experience in adult primary care and hospital medicine, currently practicing at Scripps Mercy Hospital in San Diego—a U.S. News & World Report Best Hospital. She holds an MD, manages chronic conditions such as hypertension, obesity, and psoriasis, and brings specialist insight to acute care and patient safety.
Leadership & Event Medicine Focus
As the Medical Director for Event Services Response, Dr. Riadh is responsible for:
• Developing clinical protocols tailored to event settings
• Coordinating emergency response and on-call medical teams
• Collaborating with local healthcare and emergency agencies for streamlined care
Her revisions to triage strategies and event-based preparedness models ensure prompt and effective medical interventions, safeguarding attendees and optimizing outcomes under dynamic conditions.
Professional Credentials
• Board-Certified: American Board of Internal Medicine
• Licensed to Practice in California (valid through 2027) [linkedin.com]
• Hospitalist & General Internist at Scripps Mercy Hospital
Skills & Clinical Expertise
• Comprehensive management of chronic disease including hypertension and obesity
• Experienced in hospital-based triage, inpatient care, and medical supervision
• Skilled at integrating preventive care and rapid response strategies in event environments
Approach & Philosophy
Dr. Riadh believes in preparedness, compassion, and collaboration. She advocates for proactive clinical assessments and team alignment to achieve clinical excellence during high-traffic events. Her leadership harmonizes patient-centric values with efficient emergency medical operations.
Role Highlights
• Oversees event-based triage, stabilization, and evacuation pathways
• Bridges preparations between healthcare systems, fire departments, and EMS teams
• Champions continuous improvement through training, drills, and stakeholder engagement
If your event must run without incident, you hire Events Response Services San Diego (ERSSD). When you hire ERSSD, you hire McKenna Marquis and the finest team.
McKenna brings nearly two decades on the sharp edge of emergency medicine, firefighter, EMT on ALS units, emergency room tech, to the one place that tolerates zero guesswork: public events. She understands the physics of crowds, the psychology of panic, and the choreography of a flawless medical response. She built ERSSD to make that response repeatable.
McKenna leads with a clear promise to deliver with disciplined execution, and measurable outcomes.
- Promise: Every event attendee deserves timely, expert, compassionate care.
- Discipline: Standardized protocols, staffed by seasoned EMTs and nurses, drilled for speed and precision.
- Outcomes: Coverage that feels invisible until the instant it matters.
A CEO with field credibility
She recruits for character, trains for competence, and manages by checklist. Her teams arrive early, set clean, and operate with the quiet efficiency that calms organizers and reassures guests. When seconds count, she counts twice anticipating risks, positioning resources, tightening communication with venues, hospitals, fire departments, and EMS partners.
The ERSSD playbook
McKenna’s playbook is simple and uncompromising:
- Assess the risk. Map the venue, the crowd, the contingencies.
- Staff to the plan. Right skills, right numbers, right positions.
- Drill the response. Clear roles, direct lines, no bottlenecks.
- Document and debrief. What worked, what’s next, how we get better.
Standards you can feel
Under her leadership, preparedness isn’t a binder, it’s a behavior. You see it in the neat first-aid stations, the readiness of gear, the calm radios, the quick triage, and the steady confidence of clinicians who’ve done the hard work before the gates open.
Because McKenna believes excellence isn’t an act, she believes it’s a system. Built on experience. Maintained by training. Proven in the field. That’s ERSSD. And that’s the difference between hoping nothing happens and being ready when it does.
McKenna Marquis
Chief Executive Officer, Event Response Services of San Diego
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