Dr. Schreiner was born and raised in Northeast Kansas and is a proud KU Jayhawk. After completing his Emergency Medicine residency at UTSW Parkland Hospital in Dallas, TX and practicing there for another seven years, he was thrilled to move home to Kansas and has been practicing in Emergency Departments in Kansas since 2018. Dr. Schreiner is Chief Medical Officer and full time Emergency Medicine Physician at Topeka ER and Hospital, and serves as the Medical Director for EMS Unlimited in Kansas. When not practicing medicine, Dr. Schreiner enjoys coaching his son’s baseball team, watching his daughters excel in the arts and gymnastics, traveling with his wife of 20+ years, fishing and playing as much golf as he can. 

A member of the EMSU Fire team since 2022, Toby returns to the position of Wildland Fire & Disaster Team Coordinator for the 2025 season. His experience on REMS and wildland combined with a history in 911 response and IFT allow for his well-rounded approach to leadership and management within the contractor world. In addition to his traditional EMS background, he has also worked as a production medic for the television and film industries, live music and competition events and the occasional water rescue need across the country.

I started my EMS career in the thick of the COVID-19 pandemic and earned my paramedic certification in 2024. Since then, I’ve had the opportunity to wear many hats within EMSU, from patient care to operations, scheduling, recruiting, and helping build new programs and bases, including our Aurora, Nebraska base. One of the things I enjoy most is supporting our crews and creating a positive team culture where everyone feels valued and has the tools they need to succeed.

A little about me outside of work… I grew up in Gunnison, Colorado, where winters are no joke. Fun fact: it’s occasionally the coldest place in the lower 48 states. These days I live in Grand Junction, Colorado, where I recently purchased my first home and have quickly discovered that homeownership is basically an endless DIY project… but I genuinely enjoy it. When I’m not wearing one of my many hats at work, you’ll usually find me spending time with friends and family or taking advantage of everything Colorado has to offer: skiing in the winter, dirt biking, floating the river, fishing, camping, taking my dog to the park, or getting lost in a good book. If it’s summer, there’s a good chance I’m somewhere in the mountains trying to escape the desert heat.

I started my EMS career as a volunteer EMT and worked my way up to becoming a critical care paramedic. I’ve worked as a critical care paramedic in the Omaha area since COVID in 2020. I have experience in both the ER/ICU and transport settings. While I love all aspects of EMS and critical care transport, I especially love neuro-science and learning about conditions related to the brain, including traumatic head injuries and brain bleeds. I am also very passionate about EMS leadership and educating the next generations of EMS/critical care transport professionals. In my spare time, I enjoy going to concerts, trying new restaurants, doing pottery, and spending time with my family and my 2 big rescue dogs, Jax and Mouse. 

I’m the Program Director for EMS Unlimited in Aurora, Nebraska. After spending several years in Kentucky, I’m grateful to be back home in Nebraska and honored to serve this wonderful community.

My journey to EMS has been anything but traditional. I started my career in banking and finance before discovering my passion for emergency services. That path led me to the Kenesaw Volunteer Fire Department, Hastings Fire & Rescue, and eventually Bullitt County EMS, where I was fortunate to grow from paramedic to Deputy Director. If you see me around Aurora, please stop and say hello!

Diego Vargas is a dedicated healthcare professional committed to service, education, and patient centered care. With more than 14 years of experience in EMS, fire services, and clinical leadership, Diego has led teams through complex operational challenges while maintaining the highest standards of safety, compliance, and quality care. Experience includes leading field operations, supporting telemedicine and in-home care initiatives, and managing health clinics with a strong focus on accountability, compassion, and excellence.

As an instructor, Diego is passionate about mentoring the next generation of EMS providers and strengthening the communities they serve. The mission is simple: to build strong teams, support providers, and ensure every patient encounter reflects excellence. Outside of work, Diego enjoys spending time with family, traveling, and pursuing continuous learning.

Reiley S. is the Office Manager at EMSU, serving as the go-to resource for team support and operational coordination. As the primary point of contact for internal inquiries, Reiley ensures that day-to-day processes run smoothly and that systems are easy to navigate. She plays a key role in onboarding new employees, helping them integrate seamlessly into the team. With a strong focus on making work life more efficient and accessible for everyone, Reiley brings clarity and structure to the workplace.

I live in Southeast Nebraska and have been an EMT since 2019. I earned my degree in Agriculture Business and Technology, but it wasn’t until I was invited to join my local rural 911 squad that I discovered my passion for EMS. What began as an opportunity to serve my community quickly grew into a lifelong career. After several years in rural 911, I transitioned into interfacility transport, and then to the administrative side of the business. Outside of work, I love spending time with my husband and our three kids. Our family stays constantly on the go, traveling for our children’s sports teams and making the most of every moment together.

Desiree Brown – I recently moved to Colorado from Washington State.  I am the warehouse manager for EMSU in Rifle.  I’m the go-to gal for all things, from medical supplies to vehicles and maintenance, keeping our bases stocked at all times, and working with our seasonal wildland fireteam. In my spare time I run around Colorado with my 3 awesome dogs, two blue heelers and an american bulldog.  I may be in the mountains but I’m a girl who loves to travel, scuba dive, give me the beach, water, and sun and I’m there.  

Ebin was born and raised in beautiful Palisade, Colorado. After growing up as a Palisade Bulldog, he joined the United States Navy and served 8 years as a Damage Controlman (Shipboard Firefighter). Upon his honorable discharge, Ebin transitioned into EMS and fell in love with the profession’s unique quality of affecting positive change on a daily basis. After gaining experience in Honolulu’s busy 911 system as a Paramedic, then working as a flight paramedic in the Gulf of Mexico, Ebin returned home to Colorado. Ebin now lives and manages EMS Unlimited just outside of Steamboat Springs, CO. In addition to supporting his team at EMS Unlimited, Ebin and his wife enjoy a busy but rewarding life that revolves around their large family.