Guardian Elite Medical Services is Las Vegas’s newest ambulance company.  We started as an event medical service in 2011 providing coverage to some of Las Vegas’s largest special events including the Consumer Electronics Show, Life Is Beautiful, BikeFest, and Shot Show.  As we grow, we are looking to become a leader in ambulance services in the Las Vegas valley.  Our non-emergent ambulance operations are scheduled to begin on March 1, 2018 and we are looking to begin Emergency Medical Technician courses no later than second quarter of 2018.  Our focus is to take care of people and is reflected in our motto of people taking care of people.  We do this through our C.A.R.E. acronym of:


C – Compassion
We will show compassion to all patients while in our care.

A – Access To Care
We will provide access to care to everyone using our services.
R – Respect
We will show respect to all workers in the healthcare setting.

E – Excellence
We will be excellent in everything that we do through ongoing evaluation and improvement.


Meet The Executive Staff

Samuel Scheller, MBA, NRP

EMS Chief

A native of San Diego, CA, Samuel moved to Las Vegas at the age of 7 when his father accepted a more challenging job opportunity.  Samuel spent most of his childhood and teenage years wanting to be a police officer, but shifted his focus in 2005 when he was hired by SouthWest Ambulance in North Las Vegas as a Vehicle Supply Technician.  Shortly after, Samuel transferred to field operations as an EMT-Intermediate. He also applied his skills working on the ski patrol at Lee Canyon.  Samuel was employed at MedicWest Ambulance for six and a half years where he worked in many different capacities including field operations as a Paramedic and as the founder and Captain of the EMS Bike Team.  In 2012, Samuel left MedicWest Ambulance to become an entrepreneur and establish Guardian Elite Medical Services.  Samuel holds a Master of Business Administration from American Public University, a Bachelor of Science in Emergency Medical Services from University of New Mexico, and an Associate of Applied Science in Paramedic Medicine from the College of Southern Nevada.  Additionally, Samuel is a Primary EMS Instructor with the Southern Nevada Health District; an instructor with the American Heart Association teaching Advanced Cardiac Life Support, Pediatric Advanced Life Support, and Basic Life Support; an instructor with the National Association of Emergency Medical Technicians teaching Pre Hospital Trauma Life Support; as well as an instructor with the American Safety and Health Institute.  Samuel is a member of several professional organizations including the Las Vegas Metro Chamber of Commerce, National Association of Emergency Medical Technicians, National Registry of Emergency Medical Technicians, National Ski Patrol, and the International Association of Expositions and Exhibits.  Samuel is licensed as a Paramedic in Clark County, the State of Nevada, and the State of Illinois. In his spare time, Samuel works to bring medical attention to the homeless of Clark County and is a ham radio enthusiast.


Orvis Slack

Operations Chief / Safety Chief

Orvis has more than 30 years of service in the EMS industry. He comes from California where he was born and raised. He started in EMS in 1986 as an EMT and became a Paramedic in 1991. Orvis worked for various Ambulance services throughout California. In 1995, Orvis established his own company providing BLS Ambulance onsite medical standbys. In 2000 he acquired a similar company and made that the front runner of his organization becoming the 3rd largest on-site special event medical provider in California. During his tenure in the EMS industry, Mr Slack has managed all aspects of EMS operations. He was employed as a Health and Safety Officer in the late 90’s while working for Paramount Pictures where his role was to implement and maintain a system to address potential health and safety hazards that could be encountered while working on production locations. He also started working in conjunction with local Cities and Counties on on-site safety and risk Management for venue events. In 2015 after 20 years he closed his business due to the oppressive high costs of living and doing business in California. He moved to Las Vegas and was offered a position as the Operation Manager for Guardian Elite Medical Services (GEMS). Orvis has brought a wealth of knowledge and experience to GEMS to help them to continue to grow as an up and coming company in Las Vegas.  In 1992 Orvis became an EMS educator at post secondary and moved into the college level. He has continued his training in Nevada teaching First Aid /CPR and EMT to aspiring students.

Jessica Shelton

Executive Administrator

Growing up in a military family, Jessica spent most of her childhood being raised in Hawaii and and later moving to California when her father was stationed at Camp Pendleton in 2008. Jessica has always been passionate about working in healthcare and was inspired to join EMS in 2014. Shortly thereafter she became an EMT and gained her experience working and volunteering in San Diego. She moved to Las Vegas in 2017 where she then joined GEMS.


Mark Jewell

Information Technology Captain

Mr. Jewell is also an Emergency Medical Technician (EMT).  A native of California, he is a 26 year resident of Las Vegas, and is also currently employed by a prestigious Las Vegas hotel-casino as an IT Operations Technician, responsible for monitoring and troubleshooting major enterprise-level hardware and software systems essential to the proper functioning of hotel, casino, and retail operations.  Mr. Jewell is a 2011 graduate of Capella University, receiving a Master of Science degree in Information Technology, with emphasis on Information Assurance and Security, and has over 10 years of IT experience with a wide variety of companies, including a major pharmaceutical corporation, telecommunications providers, and retailers, giving him experience in a wide range of technical environments ranging in scale from single client systems to enterprise level systems with thousands of clients nationwide.  His long-held desire to be able to help others in need has led him to complete training and licensing as an EMT, and is currently licensed to practice as an EMT in the states of Nevada and Louisiana.  He is a Life Member of the American Radio Relay League, as well as a member of the Network and Systems Professionals Association (NaSPA), the National Technical Honor Society, the Association of IT Professionals (AITP), and the National Association of Emergency Medical Technicians (NAEMT).