Credentialed Teams. Seamless Planning. Worry-Free Events.
Certified Experts
Credentialed EMTs,
Paramedics and RNs On-Site
Professionals delivering immediate car, so every attendee feels safe and every organizer feels confident.
Emergency Planning
Pre-Event Risk Analysis &
Readiness Planning
We design medical strategies that anticipate the unexpected because great events deserve certainty, not chance.
Accurate & Aligned
Event Staff Integration &
Safety Coordination
Rapid Response
Rapid Medical Dispatch
for Critical Situations
Certified Experts
Credentialed EMTs,
Paramedics and RNs On-Site
Professionals delivering immediate care so every attendee feels safe and every organizer feels confident.
Emergency Planning
Pre-Event Risk Analysis &
Readiness Planning
We design medical strategies that anticipate the unexpected because great events deserve certainty, not chance.
Accurate & Aligned
Event Staff Integration &
Safety Coordination
Rapid Response
Rapid Medical Dispatch
for Critical Situations
McKenna Marquis, Founder & CEO | Emergency Medical Response Leader
McKenna Marquis
Founder & CEO | Emergency Medical Response Leader
Leading the New Standard in Event Medical Readiness Since 2016
Raising the Bar in Event Medical Services
With 20+ years in emergency medicine, McKenna founded ERSSD to close the gap between expectation and reality in event safety. From Comic-Con to community gatherings, ERSSD delivers precision, planning, and peace of mind.
I started this company to raise the bar,” McKenna says. “Every event deserves more than basic coverage – it deserves a plan, credentialed expertise, and absolute confidence. Nothing should be left to chance.
ERSSD exists to close the gap between expectation and reality in event safety. As an LGBTQIA+ inclusive organization, ERSSD is built on a foundation of respect, professionalism, and trust – within its teams and across every event it supports. The company partners with organizers who expect more than minimum compliance and demand proactive planning, clinical excellence, and accountability. Choosing ERSSD means choosing experience, leadership, and peace of mind, regardless of an event’s size or complexity.
Join the Team That Delivers Certainty At Every Event
Your expertise does more than ensure safety—it empowers organizers and elevates every event. At ERSSD, we set the standard for medical readiness and reliability.
Make an impact where it matters most. From marathons to conventions, you’ll bring credentialed care and rapid response to events that define Southern California. We invest in continuous training, advanced protocols, and a culture of excellence because exceptional events start with exceptional teams.
What We Offer
Competitive Pay
Flexible Scheduling
Opportunities for Professional Growth
Operational Readiness That Delivers Certainty At Every Event
We go beyond basic coverage with credentialed teams, proven protocols, and real-world expertise empowering organizers to plan with confidence and ensuring attendees enjoy worry-free experiences.
Trusted By Event Leaders For Safety And Peace Of Mind
Event organizers rely on ERSSD for unmatched medical readiness and rapid response. Here is what they say:
“I’ve worked with ERSSD for several years on trail races. Their level of support is unmatched—some of the best medical crews we’ve had in over 20 years.”
Trusted for Endurance Events:
From trail races to marathons, our medical crews set the standard for safety and reliability.
“McKenna and her team are professional, competent, and easy to work with. We’ve used them for multiple endurance events in San Diego and will continue to do so!”
Professional. Competent. Always Ready:
Our team brings proven expertise and seamless coordination to every event environment.
“I visited ERSSD’s medical area several times during Comic-Con. Each time, I was quickly cared for. The area was clean and well-staffed, and the team was ready to assist. I couldn’t have been more pleased with the service.”
On-Site Care You Can Count On:
Clean, organized, and fully staffed—because every attendee deserves peace of mind.
“ERSSD is a great way to keep events safe for any medical needs that may come up. Always professional, knowledgeable, and friendly. The owner is easy to work with and extremely reliable.”
Safety That Elevates Every Experience:
Professional, reliable, and responsive medical coverage for events of all sizes.
“They were incredibly responsive at a major music festival last summer. The team handled a huge crowd with professionalism and organization.”
Responsive Care for High-Energy Events:
Our team thrives under pressure, delivering rapid response at major festivals.
“Professional, efficient, and compassionate EMS. The leadership is involved and cares about the workforce, which makes everything run smoothly. Happy employees make happy customers.”
Compassionate Care for Every Community:
Accountability and readiness at every level—because exceptional events start with exceptional teams.
- 200+ Multiple Events Annually
- Certified Medical Professionals
- 4+ Years Of Trusted Services
Expert Insights On Event Safety & Medical Readiness
Plan With Confidence
Request Your Event Medical Coverage Quote Today
“I host martial arts tournaments several times a year. ERSSD wasn’t available for my first event but referred me to another provider, which impressed me. For my next event, they were available—and the medic they sent was far better equipped and prepared. We felt safe knowing they were there. Friendly, responsive service and great value. I’ll definitely use them again and recommend them to anyone needing professional medical assistance.”
Prepared for Every Move. Expertise That Protects:
Alan W. Martial Arts Events OrganizerYour event deserves more than basic coverage. Our credentialed teams deliver readiness and rapid response when seconds matter.