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Midwest Aortic & Vascular Institute (MAVI) is an accredited Vascular Surgery Fellowship Program by the Accreditation Council for Graduate Medical Education (ACGME).

The MAVI-sponsored program provides comprehensive vascular education and training experiences leading to the development of clinically and technically competent vascular surgeons who provide high quality, consistent care and are professionals capable of practicing effectively in a wide range of vascular surgery settings.

Training sites are at MAVI and MAVI-affiliated hospitals: Liberty Hospital and North Kansas City Hospital.

The MAVI Fellowship Program complies with ACGME accreditation requirements, available on the ACGME website ACGME accreditation requirements.

Program Director: Michael K. Deiparine, MD, FSVS, FACS

Clinical Manager, Program Coordinator: Nicole Kramer, RN

For more program information or an application, contact Nikki Kramer, RN, Clinical Manager, Fellowship Program Coordinator, at or call (816) 890-9099.




Dr. Samuel Groot, a highly accomplished medical professional with a passion for both medical and life outside the operating room. Dr. Groot earned his B.S. in biology from Baylor University, where he laid the foundation for his future in the medical field. He then pursued his medical education at the prestigious Texas Tech University Health Sciences Center School of Medicine. 

With a dedication to surgical excellence, Dr. Groot completed his general surgery residency at Prisma Health in South Carolina, where he gained invaluable experience and expertise in various surgical procedures. August 1st Dr. Goot began his specialty training with MAVI's vascular surgery fellowship. 


Beyond his medical career, Dr. Groot finds joy in spending quality time with his family. When not attending to patients, you can often find him hiking with his wife and daughter.  Dr. Groot also has a passion for leisurely activities such as golfing, fishing, and playing the viola.


Troy Tyler,  DO, Fellow


Troy Tyler, DO, began his medical training journey earning an undergraduate degree at the University of Georgia. In the following 12 months, he attended Georgia Medical Academy earning his Emergency Medical Technician certification. Dr. Tyler then attended Alabama College of Osteopathic Medicine, completing his medical degree in 2017.

Dr. Tyler finished his five-year general surgery residency at St. Mary’s Medical Center in Blue Springs. After a one-month hiatus, he began his specialty training with MAVI’s vascular surgery fellowship.

In addition to his love for medicine, Dr. Tyler enjoys playing baseball, training his dogs and doing anything outdoors with his friends and family!

Fellow David Shanberg


We are proud to announce:

On July 21st, Dr. David Shanberg was MAVI's first fellow to graduate from our vascular surgery fellowship program. 


MAVI's vascular surgery fellowship is accredited by the Accreditation Council for Graduate Medical Education (ACGME) and, as a private practice, we are an AGME accredited Sponsoring Institution. It is our passion to educate the next generation of vascular surgeons.

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