About Diabetes Education Services

We believe in your success!

We invite you to join our community of health care professionals who are passionate about improving diabetes care through education and advocacy.

At our company, we work diligently every day to provide diabetes information that is relevant, compassionate and cutting edge. Our goal is to help translate the complex science of diabetes into understandable terms that you can apply directly to the people you work with who are living with prediabetes and diabetes.

We know the road to becoming a diabetes educator and specialist is challenging. Many students aren’t sure how to get started or how to make the best use of their limited study time. See our Preparing for the CDCES Webinar to get started!


Meet the Diabetes Education Services Team:

Coach Beverly Thomassian RN, MPH, CDCES, BC-ADM

As president of Diabetes Education Services, Beverly Thomassian believes that we can improve diabetes care through education, advocacy, and curiosity. As a diabetes coach, she promotes excellence in care through her live course and webinar presentations.

Beverly is a Diabetes Nurse Specialist and is Board Certified in Advanced Diabetes Management. She is an Associate Clinical Professor at the University of California, San Francisco, (UCSF) and a visiting professor at California State University, Chico (CSU Chico).

As the director of a local Diabetes Education Program, she keeps her clinical skills fresh through one-on-one education, group classes, and consultation. In her role as nurse entrepreneur, educator, and clinician, her passion moves her to improve diabetes care.


Bryanna Sabourin, Director of Operations & Customer Happiness

Meet our Director of Operations & Customer Happiness, Bryanna! Bryanna loves cooking, live music, and papercrafts. She is passionate about health care accessibility and bridging the gaps that can limit health care access.

Bryanna has worked in health care operations for nearly a decade with a strong emphasis on customer experience and satisfaction. Bryanna is focused on empowering each person she works with, so they can reach their individualized goals. Welcome Bryanna, we are thrilled to have you aboard!


Robert Thomassian, Assistant to the Director of Operations

Meet Robert: still a student in high school, he aspires to obtain a Bachelors in Business. Robert looks forward to gaining unparalleled work experience from Diabetes Education Services. With the insightful coaching of his teachers, Taryn Nugent and Beverly Thomassian, he has gained many new skills ranging from social media engagement and database management, to formatting websites and fulfilling orders. We are truly honored to welcome him to the team


Catherine Cullinane RN, CDCES, Technology Thursday Content Writer


Catherine has been a nurse for 30 plus years, and a Diabetes Educator for 20 years. Her passion is helping people empower themselves with behavioral change for optimal health. Type 1 diabetes management ( insulin pumps, CGMs, and new diabetes technology) is one of her major interests and focus.

Catherine has been a Program Coordinator for the American Diabetes Association’s Education Recognition Program in both Wyoming, and  San Francisco, California. She has worked in out-patient clinics, collaborated with hospital in-patient diabetes management, and is a pump and CGM trainer. 

She has traveled the world with her own insulin pump, and more recently a CGM. The latest and greatest in type 1 diabetes management continues to amaze her. Catherine loves to travel, rock climb, hike up mountains, read, cook and eat healthy foods.


Anne Carter, Media Consultant

Meet Anne! Anne brings a fresh and exciting perspective to the Diabetes Education Services team. She has spent her previous years in operations and customer care and loves the challenge of providing the best customer experience possible. Anne’s background working in technology allows her to keep our website and online university easy to navigate for all our students. She’s always available to answer any questions you might have. We are thrilled to have Anne provide wonderful technical support and top notch customer service. Welcome Anne!


Lainey Coulson, Engineering Consultant

Lainey Koski joined our team in 2011. Lainey does an incredible job of keeping the customer in center focus by making sure our technology platforms are user-friendly and easy to navigate. Lainey has a strong background in customer service excellence. In addition, she has a special skill in creating technological magic to assure that our website and Online University provide a great user experience. Her genuine concern, skills, and knowledge assure that you receive the information and resources you need to succeed.  We are so fortunate to have Lainey on our team!  


Live Seminar Team of Instructors

  • Dana Armstrong, RD, CDCES
  • Lonnie Vaughn RNC, BSN, CDCES
  • Heather Nielsen, MA, LPC CHWC

To learn more about our spectacular instructors for our Diabetes Educator course, please click here.


Board of Directors:

To learn more about our wonderful Board of Directors, please click here.


We Truly Believe in Your Success

We know you are motivated, we know you are passionate about diabetes care and, we believe in you!

We are here for you. We provide on-phone and email coaching to support your journey to be the best diabetes educator possible.

In addition, we offer a variety of services and products to help you meet your goals.

Our Live Courses and Onsite Seminars are not only stuffed full of important information, we make sure they provide meaningful content that is engaging and fun.

We also offer Resource Books and Study Tools at great prices. These books are great references for your clinical practice, plus they help prepare you for the CDCES Exam.  

Lastly, we are excited to share our Online University with you. These quality courses are self-paced and can be viewed when it’s convenient for you. Fulfill your CEU requirements, prepare for certification, refresh or broaden your knowledge and skills while keeping current with the latest in diabetes.

Please contact us if you have any questions or need help getting started on your diabetes career path. Let’s walk together!

In appreciation,

Beverly Thomassian
President and Founder
Diabetes Education Services


The use of DES products do not guarantee successful passage of the CDCES exam. CBDCE does not endorse any preparatory or review materials for the CDCES exam, except for those published by CBDCE.”**To satisfy the requirement for renewal of certification by continuing education for the Certification Board for Diabetes Care & Education (CBDCE), continuing education activities must be applicable to diabetes and approved by a provider on the CBDCE List of Recognized Providers (www.ncbde.org). CBDCE does not approve continuing education. Diabetes Education Services is accredited/approved by the Commission of Dietetic Registration which is on the list of CBDCE Recognized Providers.”

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