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Our staff has over 35 years
of experience in health care.

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Dr. Barnes


Dr. Greg Barnes is the owner and director of two health centers in the triangle.  He has spent the past decade learning everything he possibly can about optimal health, longevity, anti-aging and function.  This pursuit has led to multiple degrees in natural health including Doctor of Chiropractic, Doctor of Natural Medicine, Functional Medicine, Doctor of Pastoral Science and numerous certifications.  He loves working with families and individuals with all walks of life, especially when they have a strong desire to get healthy and more importantly stay healthy.  In addition to his work, he loves spending time with his wife, Jani, three children, Nora, Leo and Gabie and two dogs, Coco and Juno.  His hobbies include reading, watching sports, learning about business/money/finance, and investing in like minded companies and projects.

If you are in the Morrisville, Cary area, check out his other Clinic:

Triangle Health Center

Click here to see Dr Barnes Recommendations for a Healthy Lifestyle

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Dr. Vivian


Dr. Vivian Federowicz was born and raised in Benson, North Carolina. She completed her undergraduate degree in Biological Sciences at North Carolina State University.   Dr. Vivian and her husband Bryan met at N.C. State and are huge state fans (GO PACK)! She received her Doctorate of Chiropractic from Life University where she graduated with the distinction Magna Cum Laude. 


Her passion is pediatrics and perinatal care, and she is currently working toward her diplomate from the International Chiropractic Pediatric Association. This diplomate program is the most prestigious pediatric training in the profession. She will be celebrating her fifth year at Greenway Health Center in February.   Dr. Vivian started the company Birthing Outside the Box with Jani Barnes and uses that platform to educate women about their birth options through classes and their weekly podcast. When she is not adjusting patients as a birth worker or adjusting patients Dr. Vivian enjoys spending time with her border collie Rawley and her maltipoo Remy.


Dr. David Vega


Dr. David is a NC native and studied at Barton College for his undergraduate degree. He graduated from Logan Chiropractic College in 2022 and we are so excited to be adding him to the Greenway team. He is married and his wife’s name is Ashley. They enjoy spending time with their daughter and have one on the way. In his spare time you can find him on a soccer field either coaching or playing. Dr. David is bilingual (Spanish) and is going to be a huge asset in providing excellent care for our community

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Julie was born in Michigan and is a twin! She married her high school sweetheart and will be celebrating her 45th year wedding anniversary this year. They have four children and eleven grandchildren. She has been living in Raleigh since 1987 and enjoys playing golf and cheering on the Wolfpack or the Carolina Hurricanes in her free time.

Julie has worked at Greenway Health Center for six years and her duties in the office include all patient calls and scheduling. She is a master of communication and always greets every patient with a smile and a personal hello.

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Kesha was born in Gary, Indiana and grew up as a “Military Brat”, which allowed her to travel throughout her childhood. She’s lived in various parts of VA, Japan and ultimately settled in Jacksonville, North Carolina. She moved to Raleigh in 2010 after meeting her husband, Otis. They have two children & a yorkie bichon doggy. 

Kesha is the Office Manager at Greenway Health center and has worked with Dr. Barnes for 10 years, specializing in patient communication, finances, insurance, x-ray, and personal injury. In her free time, she enjoys playing billards, riding her motorcycle and volunteering her time to the Food Bank, Habitat for Humanity, Salvation Army, Koats for Kids and many more non-profit organizations! Kesha is also a prominent member of a motorcyclist club here in Raleigh who focuses on giving back to the community through scholarships for underprivileged children as well as other volunteer opportunities.


A Proven System

Do you know there is something wrong with your health but don’t know how to address it? Schedule a consult with us and we will walk you through how to get your health back on track!

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