Meet Our Chiropractic Team

At Kostas Chiropractic Clinics, our licensed Georgia doctors of chiropractic are professionally trained to treat your problems, and you can count on their years of experience to help you recover from whatever problem you are having. Click on a chiropractor’s name below to learn more about them.


Get To Know Our Doctors of Chiropractic

Michael Kostas, DC Richard Zabowski, DC Carmen Flores, DC

Giselle Cerna – Chiropractic Assistant

Giselle was born in Carolina, Puerto Rico and then moved to Marietta, Ga. at the age of three. At the age of 12 she was diagnosed with Scoliosis and surgery was recommended. Her mother Glenda, already working for Dr. Kostas brought her into his Smyrna location to get his assessment. After just a few months of Chiropractic Care, she quickly recovered and decided to enter the medical field as an assistant. Her daily goal at Kostas Chiropractic is give each patient special attention when they come in for their appointment. She is a single mother with 2 boys; she enjoys cooking and baking deserts during her time off.

Glenda Fraguada – Chiropractic Assistant

Glenda was born in Canovanas, Puerto Rico and then moved to Georgia in 1989. She became a chiropractic assistant in 1999 and joined Kostas Chiropractic that same year. Glenda really enjoys meeting new people each day and helping patients to feel better. She is a single mother of three living in the Duluth area. One of her two daughters, Giselle is also on staff at Kostas Chiropractic as a chiropractic assistant. When Glenda has time off, she enjoys listening to music and shopping for bargains.

Cynthia McCollum – Marketing Manager

Cynthia was born and raised in Atlanta, Ga. She has been in the marketing field for over 10 years. In the past five years she has been specializing in marketing for doctors. She joined the staff at Kostas Chiropractic in October 2012. As the Marketing Manager she is currently focused on developing a new website for the practice. She currently resides in the Norcross area and has a Calico cat that she considers to be her only child. She enjoys movies and neighborhood walks during her time off.