About Us

Tezla Group, Inc. was originally founded in 2003 as Avrio Group, Inc. in Salisbury, MD. Avrio Group's focus was delivering reliable and scalable IT solutions to local businesses on the Delmarva Peninsula. Over the years, Avrio Group grew into a nationally recognized provider of IT and IP surveillance solutions to both the private and public sector. In 2010, the IT and infrastructure development division of Avrio Group was purchased by Tan Nguyen, and renamed to Tezla Group in order to re-focus on core IP networking and the small business. Tezla Group's offerings include a wide range of technology for the small to medium business, but delivered by solutions and engineers for the corporate enterprise. Our "big business" technology and training allow us to create a more efficient "small business" network.

Kimberly Riggin

Customer Service Manager

Having seen Tezla begin from just a small acorn known as Black Oak Computer Services, Kim has seen the company grow into the huge oak tree known most recently as Avrio Consulting Group...now, Tezla Consulting Group.

Kimberly Hayward Riggin was raised in Salisbury with an idyllic childhood. After graduating from Parkside High School she went on to attend Salisbury University for several years. Realizing a career as a secondary school teacher was not exactly what she craved, she then moved to Statesboro, GA to pursue her passion in fashion. Graduating from Georgia Southern University with a BS in Family and Consumer Sciences with a concentration in Fashion Merchandising, Kim moved home to Salisbury and somehow found herself at Black Oak hearing unknown lingo and inevitably learning about AS-400's and pSeries IBM servers. What a switch from Fall and Spring fashion previews!

Kim found a home within the technology industry and craved to learn more. She began as the Marketing Programs Manager with Black Oak. This position lead to a Customer Service Managerial position as well as inside/outside sales and procurement.

Today, Kim wears many hats at Tezla. She oversees the Customer Service department as well as many of the Accounting details. She is in charge of client contracts, vendor relations, product procurement and is the Office Manager. Tezla values Kim's experience as well as her extensive knowledge of the Eastern Shore.

Kim resides in Salisbury with her husband and son. She loves cooking, baking, gardening, and long warm days on the beach with a great book! She also enjoys spending time with her son and husband.

Beth Matthews


Born and raised on Maryland's Eastern Shore, Beth has been with the Tezla since the word "go". She was one of the original employees back in 2003 when Darrin Lipscomb purchased the small business division of Black Oak Technologies and started Avrio Group, Inc.

Most days she can be found diligently "crunching the numbers" and filling out those never - ending pesky forms that seem to be so prevalent with any business. On other occasions you may find her working on a Human Resources task or even helping a customer with an accounting question.

Beth holds dual degrees in both Business Administration (concentration Management) and in Accounting. She has worked with various sized companies from Fortune 500 corporations to "Mom & Pop shops - in industries including Construction, Retail Sales, Waste Management, Consulting, Medical Practices and Computer Sales and Service. She even ran her own Accounting/Consulting business for several years.

In addition, she is a Certified Installer/Trainer for Southware Innovations Accounting Software, Microsoft Small Business Financials and Microsoft Small Business Accounting. She is currently working on her QuickBooks Certifications.

In her spare time Beth enjoys mountain biking, camping, traveling and spending time with her nieces and nephews. Some fun facts about Beth are that at various times she has worked as a traveling puppeteer, a MPSSAA Field Hockey official and a Red Cross Certified Water Safety Instructor.

Kate Bubas

Data Assurance Technician

Kate is an Eastern Shore native, raised in the Salisbury area. She first began working with computers at the age of seven, when her father brought home a discarded Apple II. It was love at first byte. In her spare time she enjoys hiking and camping with her husband and two daughters, as well as heading to the beach whenever possible. She is also active in local theatre, as well as volunteering with her daughter’s Girl Scout troop.

Kate joined Tezla in 2015 and brings with her experience from several industries including healthcare, journalism and IT. She graduated Magna Cum Laude in 2010 from Kaplan University with a degree in Professional Studies concentrating in Law, Psychology and Communications. Currently she is completing her Master’s in Legal Studies with a certificate in Information Systems Security from American Public University.

Jeanne M. Kenkel-Tajvar

Client Care Representative

Born and raised on a farm in Iowa, Jeanne grew up in a big family with six siblings (including an identical twin), two parents, and a grandpa. Incidentally, her family was one of the smaller ones in the area. After high school, Jeanne went to Germany for a year as an exchange student. She went to college in Nebraska where she obtained a Bachelor's degree in Psychology, which she feels she has put to good use every day since. From there, Jeanne migrated to Omaha, NE where she lived for many years. She has a varied and extensive work history in customer service which includes, among other things, being a former flight attendant and owning her own restaurant.

In 2001, Jeanne moved from Nebraska to Green Bay, WI and had a baby exactly three weeks later. That baby came home from the hospital to a motel room. After one year, it was time to move again. In 2002, Jeanne and her family landed on the Eastern Shore, which quickly became home. She lives there with her husband and children, one of which has grown up and moved across the Bay Bridge where he works for an IT company like Tezla. It could be said that raising someone obsessed with technology was preparation for her career at Tezla.

Jeanne loves people, hearing their stories, knowing them personally, and generally delving into what makes them who they are. She looks forward to building her relationships with her customers and is appreciative of the opportunity to be of service to her clients.

Allison Smith

Administrative Assistant

Allison is an Eastern Shore native, raised in the Salisbury area and currently residing in Delmar, MD. She attended Salisbury University before choosing to stay home with her two children. After her children reached school age, she acquired a position in the local public school system. She joined the Tezla Group in 2016 as an administrative assistant.

In her spare time she enjoys cooking, fitness, reading, and spending time with her husband, daughter, and son, as well as heading to the beach whenever possible. She loves attending school events and is active in her church where she serves in the children’s ministry department and meal ministry outreach.

Ryan Guth

Senior Communications Engineer

Ryan was raised on Maryland’s Eastern Shore and attended St. Michaels Middle/High School. At age 17, while still finishing high school, Ryan began his telecommunications career installing telephone systems. He elevated to Sr. Technician status within 5 years and has continued to evolve his knowledge as changes in the telephony industry occur. Ryan graduated from Chesapeake College in 2004 and achieved an Associate’s Degree in Business Administration, while continuing to pursue Telecommunications full time.

He has received numerous manufacturer certifications on a wide range of telephone products, equipment, and even a license to operate lifts and powered trucks. His experience in the field has afforded him the ability to help businesses determine which technologies and solutions are most effective for their environment. Additionally, he holds a low-voltage electrical license in many jurisdictions. Ryan resides in Easton, Maryland with his wife and their son Jaxson, and is always playing with motorcycles, old cars, and guitars.

Patrick Weller

Voice Communications Engineer

Patrick is an Eastern Shore native, having grown up in the small town of St. Michaels, Maryland. He has had a love for all things tech for as long as he can remember, having built computers and providing technical assistance in Talbot County for the better part of a decade. Patrick graduated from Virginia Tech with a degree in Economics, and then was inevitably drawn back to the charm of the Eastern Shore.

Patrick enjoys playing guitar, wrestling with his dog, and every concert he can manage to attend.

Doug Tribull

Senior Business Consultant

Doug is an Annapolis, MD native. He graduated from Johns Hopkins University with BA and MA degrees, and then served as a Naval Aviator assigned to Patrol Squadron 10, where he tracked Soviet submarines and conducted electronic surveillance. After discharge, he continued his education at Loyola University, where he earned an MBA in finance.

For the past 30 years he has held sales and sales management positions at IBM, AT&T, Siemens, Gartner, and most recently the Computer Science Corporation. His focus throughout his career has been in the Information Technology space. Doug worked with commercial and Federal organizations to assist them in realizing that IT is simply a service that could best be performed by IT-centric organizations. His objective has always been to free organizations from having to make large capital expenditures then support and manage their applications and operations. By not having to manage the IT organization, businesses could focus on their core businesses - they were better able to spend time and resources on managing and growing their businesses.

Doug joined Tezla in 2016, and will work in a Business Consultant role - continuing to focus upon ways to make his customers more responsive, productive with technology, and helping them "do what they do best".

Brian Foster

IT Consultant

Brian was born in California and raised in the Sierra Nevada foothills. He received his first computer, a Timex Sinclair 1000, when he was ten and quickly became addicted. He spent many years teaching himself to write programs, take machines apart and rebuild them.

In 1994 he moved to the East Coast where he began his career in Information Technology. He has worked for various technology companies around the Eastern Shore focusing on creative yet practical solutions to client needs and with a particular interest in Network Security. Brian is excited to bring his experience and skills to the Tezla team.

He lives in Delaware with his wife and their three sons. He is a Commander for Royal Rangers, a ministry for boys and young men, that his two youngest sons participate in. Brian loves camping with Rangers and his family, is active in his church, teaches himself new computer programs and technology in his spare time, and enjoys singing with his family in their basement "karaoke club".

Rich Disharoon

Network Engineer

Rich was born and raised on the Eastern Shore of Maryland. He began his IT career in 1999 as a part-time Computer Operator for Call Center Services. In 2002, when the Call Center decided to close its doors permanently, Rich was hired as a Systems Administrator by a Pleasanton, CA based company—BarNone, Inc.—that was expanding its operations in the Salisbury, MD region. He ultimately spent six years with that company before landing a Network Administrator role with Wor-Wic Community College.

Rich joined the Tezla Group in 2014, bringing PC/laptop support, server/storage management, and database administration experience from a wide array of industries including both private and public sectors.

Rich holds both an A.A.S. degree with a concentration in Hardware and Helpdesk Technology from Wor-Wic Community College and a B.S. degree in Computer Information Technology from the University of Maryland, University College. He is continuously looking for ways to increase his technical expertise through various avenues of training and education.

Eric Bilello

Network Technician II

Eric was born in NYC and grew up in the suburbs of NJ. In 2003 he graduated from Salisbury University with a degree in computer science and began working in the shore's IT industry.

Over the last 10 years Eric has expanded his knowledge of IT through his exposure to a variety of industries and businesses in the greater Salisbury area.

In his spare time Eric enjoys working on the home and garden he shares with his wife and three cats.

Greg Hitchcock

Network Technician II

Greg was born in Tupelo, Mississippi but has lived most of his life in the Raleigh, North Carolina area where he received his college education. He currently holds a degree in Computer Science with a major in Network Security and has worked for many years in the IT Industry. During his career, he has obtained a wide variety of experience ranging from Network Engineering, Systems Administration, and SQL Database Administration, and has recently starting developing programs in C#, and Java. He also has experience with web design writing in HTML, XHTML, and CSS, and hopes to continue his journey learning and expanding the limits of IT.

He currently holds certifications in CompTIA A+, Cisco CCNA Routing and Switching, Cisco CCNA Data Center, VMWare VSP5, and has completed training courses in VMware vSphere 5 configuration and management.

He has worked in various roles in the past such as Help Desk Technician, Data Center Tech 1 and 2, Network Administrator, Network and Systems Engineer, and President. He moved to the Eastern Shore in 2006, and enjoys spending time with his daughter, flying remote controlled drones, wood working, off road trail riding, golf, and playing guitar.

Luke Wismans

Network Technician

Luke was born and raised on the Eastern Shore where he attended Parkside High School. After high school, Luke attended Towson University where he earned a degree in Computer Information Systems. Following graduation he worked several different jobs in the service industry finally ending up in the Charles Village area of Baltimore City. Luke worked as a bartender in a neighborhood restaurant while keeping up with his computer skills and working as an intern in a data center at Towson University.

Luke recently moved back to the Eastern Shore where he has gotten back into the Information Technology field and joined the Tezla team. In his spare time Luke enjoys playing music and furthering his knowledge of technology and computer skills.

Tan Nguyen


Raised and educated in the Washington D.C. area, Tan moved to the Eastern Shore of Maryland in 1999. Prior to moving to the Eastern Shore, Tan worked in network administration, consumer electronics sales and installation. Once relocated, he took a position with a local IT company as an IT consultant where he designed, deployed, and maintained networks for local businesses. In 2005, he accepted a position with Avrio Group in Salisbury as a Senior IT Consultant. He became partner at Avrio Group in 2008, and in 2010, Tan purchased Avrio Group from its founder, Darrin Lipscomb.

Tan began his college career at the age of 15, and qualified for his first degree at the age of 18. His studies included electrical engineering, computer science, and architecture. His college career was funded by several private art scholarships and grants from various organizations. During his professional career, Tan has also achieved certifications from hardware and software manufacturers.

In his spare time, Tan enjoys furthering his computer skills, wood working, drawing, audio design, and spending time with his wife and two daughters. He also has interests in classic cars, photography, and traveling.