About EM-Sim
EM-Sim is an AI-powered clinical simulation platform built by an emergency medicine physician for emergency medicine physicians and residents. We believe that deliberate practice with realistic scenarios is the key to sharper clinical decision-making when it matters most.
Our Mission
To provide emergency medicine physicians and residents with the most realistic, evidence-based simulation training available — accessible anytime, anywhere.
Emergency departments are high-stakes environments where clinical decisions must be made rapidly and accurately. EM-Sim bridges the gap between textbook knowledge and real-world practice by immersing learners in branching clinical scenarios that mirror the complexity and urgency of the emergency department.
Our Vision
A future where every emergency medicine physician has access to continuous, personalized simulation training that evolves with the latest clinical evidence.
We envision EM-Sim as the standard for supplemental emergency medicine education — a platform that residency programs, attending physicians, and medical students rely on to maintain clinical sharpness, prepare for board examinations, and ultimately deliver better patient outcomes.
What Drives Us
Every feature and scenario in EM-Sim is guided by these core principles.
Clinical Accuracy
Every scenario is grounded in current evidence-based guidelines and reviewed for clinical fidelity.
Deliberate Practice
Branching decision trees and immediate feedback promote the kind of focused repetition that builds clinical expertise.
Physician-Centered
Built by an emergency physician who understands the demands of the ED and the realities of residency training.
Better Patient Outcomes
Sharper physicians save more lives. Everything we build is ultimately in service of the patients who depend on emergency care.
Who We Serve
EM-Sim is designed for the full spectrum of emergency medicine professionals.
Medical Students
Build a strong foundation in emergency medicine clinical reasoning before entering residency. Practice the decision-making process in a safe, guided environment.
EM Residents
Supplement your clinical rotations with targeted simulation practice. Prepare for ABEM board examinations with realistic case-based scenarios across all major emergency medicine categories.
Attending Physicians
Stay sharp between shifts. Review high-acuity scenarios, explore rare presentations, and maintain the clinical edge that comes from consistent practice.
What Makes EM-Sim Different
EM-Sim is not a question bank or a passive video library. It is an active simulation platform where every decision you make shapes the clinical outcome — just like in a real emergency department.
- Branching clinical scenarios — your decisions determine the patient's trajectory, with realistic consequences for each choice
- Immediate evidence-based feedback — understand the reasoning behind optimal and suboptimal decisions in real time
- AI-powered medical tutor — ask clinical questions and receive detailed, guideline-referenced explanations
- Performance analytics — track your accuracy, response times, and improvement across categories over time
- 30+ clinical scenarios — covering cardiac, trauma, respiratory, neurological, pediatric, toxicology, sepsis, and more
Built By
Global MedOps Command LLC
Global MedOps Command is a medical education technology company dedicated to advancing clinical training through innovative simulation platforms. Our products are designed by board-certified physicians who understand the unique challenges of medical education and clinical practice.
Meet the Founder
EM-Sim was created by a physician who has spent his career teaching at the bedside.
Chester "Chet" Shermer, MD
Board-Certified Emergency Medicine Physician • Founder, Global MedOps Command LLC
Dr. Shermer is a board-certified emergency medicine physician with years of experience practicing in high-volume emergency departments. Throughout his career, he has been deeply committed to medical education — mentoring residents, teaching medical students at the bedside, and developing innovative approaches to clinical training.
His passion for teaching is matched by a genuine belief that simulation-based education can transform how emergency physicians prepare for the most critical moments of their careers. Dr. Shermer founded EM-Sim to bring the same hands-on, case-based teaching style he uses at the bedside into a platform that physicians can access anytime, anywhere.
"The best learning happens when you're actively making decisions and getting immediate feedback — not passively reading a textbook. That's what EM-Sim is built to deliver."
What Colleagues & Trainees Say
Physicians and trainees who have worked alongside Dr. Shermer share their experiences.
"Working alongside Chet for years, I saw firsthand how he could break down the most complex cases into teachable moments — right there at the bedside, in the middle of a busy shift. He has a rare gift for making people feel comfortable asking questions and genuinely enjoys watching others grow as clinicians. EM-Sim is a natural extension of who he is as a physician and educator."
Kevin R., MD
Former Partner & Fellow Physician
"As chief resident, I had the privilege of learning from Dr. Shermer on some of the highest-acuity cases we saw. He never made you feel like you were being tested — instead, he walked you through his thought process in real time, explaining why he was making each decision. That style of teaching stuck with me and made me a better physician. I'm not surprised he built a platform that captures that same approach."
Nathan T., MD
Former Chief Resident, Emergency Medicine
"Dr. Shermer was one of the attendings I always hoped to be on shift with. He had this way of turning every patient encounter into a learning opportunity without ever slowing down patient care. He'd pull you aside after a critical case and debrief — not to critique, but to help you understand the 'why' behind every decision. That kind of mentorship is rare, and it shaped how I practice emergency medicine today."
John C., MD
Former Resident, Emergency Medicine
"During my emergency medicine rotation, Dr. Shermer made what could have been an intimidating experience feel approachable and exciting. He took the time to explain his clinical reasoning on every case, encouraged me to think out loud, and never made me feel judged for not knowing something. His enthusiasm for teaching is infectious — he genuinely loves what he does, and it shows. He's the reason I chose emergency medicine as my specialty."
Sarah P.
Former Medical Student