Meet the Team


Renee’ Boston

As a Cumberland County native, Renee’ had the opportunity to grow up and now raise her family in this wonderful community. She obtained her Bachelor of Science in Physical Therapy from the University of Tennessee – Chattanooga in 1999. She worked as a physical therapist for 15 years in the Upper Cumberland region. In 2016, she graduated from South College with a Masters of Health Science in Physician Assistant Studies. When not at work, you can find she and her husband Brooks on a soccer field watching their two favorite players, Stone and Lilly.


Joanna Gibbs

After Graduating from the University of Kentucky with a Bachelor Degree in Pharmacy, Joanna continued her education at the University of Louisville School of Medicine. She completed the internal medicine residency program in 2001 at The University of Tennessee College of Medicine – Chattanooga and Tennessee became her home.  Dr. Gibbs has practiced internal medicine in Crossville, Tennessee for the past 16 years. The proud mother of two wonderful boys, Joanna strives for excellence in her practice.


Angie Houston

 Angie obtained her associates in nursing from Roane State Community College in 2003. She then went on to obtain her Bachelor Degree in Nursing from Tennessee Tech University in 2013. Angie worked as a registered nurse in women’s health at the local hospital before switching to a clinical setting. She has been with Synergy Medical for 3 years. Angie has been married to her husband of 25 years and has 3 children. Angie is hardworking and brings multiple skills to the clinic. She works in both the medical side and the aesthetic side of the clinic. “I enjoy utilizing my skills in women’s health and broadening my horizons in aesthetics. I love customizing skincare routines based on the individuals needs”.

Medical Assistant

Shona Boston

Shona Boston received her MA license 20 years ago. She has been married for over 25
years with 2 kids. Shona has been a part of Synergy Medical since 2019. She is devoted to
serving our patients and works very hard to keep everything on the medical side running
smoothly. “I love my job and especially assisting Dr. Gibbs in caring for her patients”.

Medical Assistant

Betsy Navarro

Betsy Navarro received her MA license and started working at Synergy Medical in 2017.
When Besty isn’t at work you can find her watching one of her boys at the soccer field. Betsy is
known at our office for contributing positivity and encouragment to our staff and patients. “I love
what I do, taking care of our patients makes me happy”.

Secretary/ Administrative Assistant

Tammy Daugherty

Tammy is Synergy’s secretary who also serves as an administrative assistant. She
started working at Synergy Medical in 2018. Tammy has three grandchildren and enjoys
spending time with them and traveling with her family. She is the first face people see when they
walk through the door and she enjoys making people feel welcomed and loved. “It is an honor to
help and greet our patients and hopefully take away any nerves they have before seeing the

Administrative Assistant

Lacy Houston

Lacy worked as a Physical Therapy Technician at CMC for 14 years before joining the
Synergy Medical team in 2018. Lacy enjoys spending time with her family and watching her
boys on the football field and basketball court. Lacy mainly works on the aesthetic side of our practice where she is
devoted to helping others feel beautiful and strives to promote confidence in everyone who
walks through our door. “My favorite part of my job is getting to see the confidence of our
aesthetic patients grow. They deserve to feel beautiful and I love being able to be a part of the

Our Amazing Staff

Words cannot express our excitement to work with such wonderful team members. We feel beyond blessed to be able to care for patients with such a caring and talented staff.

Our Team in Crossville