About us

Learn more about Keystone Healthcare and Wellness

We are a total treatment solution for auto accident patients all under one roof and our patients are treated with first class care.

Our nurse practitioner Celista Mckenzie, conducts evaluations and provides a treatment plan specific to the individuals' needs. She administers corticosteroid injections, as needed in our procedure room for shoulders, knees, and elbows for our patients. She brings 16 years of experience with her including three years in the emergency room where she continues to PRN once a month.

Meet Our Team


Michael Wenner
Owner

Brenda Kennedy
Practice Manager

Brenda joined our team in February 2014. Previously, Brenda was employed with JPMorgan Chase and Company, and she offers 25 years of management experience and customer service. Her goals are to not only ensure we operate at the highest level of efficiency but also strive to provide excellent care to all patients. Brenda is an extremely professional, positive, and energetic person who loves meeting new people. Her favorite pastime is spending time at the beach with family and friends.

Celista McKenzie
APRN, Family Nurse Practitioner

Celista McKenzie is the Medical Director and Nurse Practitioner for our clinic. She began her career with us in October 2015. She is responsible for overseeing all aspects of medical care for our patients and provides services that include burn treatment, suture removal, corticosteroid injections in knees, elbows, and shoulders; and physicals, just to name a few. She also coordinates other treatments we offer to our patients such as active and passive therapies, chiropractic care and massage therapy. She is a native of Olanta, S.C. and received her RN Degree from Florence Darlington Technical College in 2004, then proceeded to get her BSN Degree from the University of Phoenix in April 2013 and a Master’s Degree from Walden University in August 2015. She brings with her 16 years of experience, including 3 years in the emergency room where she continues to work PRN.

Dr. Brandon Morris, D.C.
Florence Location

As a teenager, Dr. Brandon Morris was involved in a motor vehicle accident when he was struck by a drunk driver who ran a red light. Dr. Morris was left with severe torticollis and decreased range of motion in his cervical spine, for which he sought care from numerous specialists throughout his freshman year of college, none of which helped. Month after month would pass before someone would recommend chiropractic care. After a week of care, he was completely free of pain and full range of motion was restored. This experience left a lasting impression that would forever shape his life. After obtaining a Bachelors of Science Degree collaboratively in biology and chemistry from Francis Marion University and the University of South Carolina, Dr. Morris continued to pursue a career as a servant of the people. After two years into a pharmacy career, he felt unfulfilled in his ambitions to help people realize that chemicals merely attempt to mask symptoms of problems, while side effects cause other, often more serious problems. Remembering his own personal life changing experience with chiropractic care, He decided he wanted to become a doctor of chiropractic because only then could he truly help patients heal their problems at the source. Once obtaining his doctorate degree in chiropractic from Shurman College of Chiropractic, Dr. Morris began his career as a chiropractor. Since graduating, Dr. Morris has practiced in Columbia, SC, and is now practicing in Florence, SC. He enjoys helping others in the community by offering a drug and surgery free alternative approach to living healthy and boundless lives.

Dr. Matthew Ashkettle, D.C.
Florence and Bennettsville Locations

Dr. Ashkettle was born and raised in Tuscarawas, OH, and was a three-sport athlete during his high school years. Throughout his high school career, he suffered many injuries, which is where he was first introduced to chiropractic care. The Town Chiropractor was the first choice of the community for health and wellness related issues, which at the time was not the norm. That is when the thought of becoming a chiropractor first entered his mind. Dr. Ashkettle went on to play baseball in college at Shawnee State University and in 1997 received his Business Degree. He was a four- year starter and was elected into the Athletic Hall of Fame for his success on the diamond. He attended Life University in Marietta, GA, and received his Doctorate of Chiropractic in 2001. Dr. Ashkettle brings with him 17 years of chiropractic experience. He has practiced in Columbus, OH and is now practicing in Florence, SC.

Dr. Michael Smyth, D.C.
Conway Location

Wynelle Miller
Front Desk Receptionist

Wynelle Miller began working with our team in December 2012 serving as a receptionist. She is responsible for scheduling appointments, patient check-in, answering phones, and many other clerical duties. Her main goal is to ensure patients feel welcome and have a pleasurable experience. Her top priority is to always have a smile on her face and to possess a cheerful demeanor. Wynelle believes it is important for every patient to be treated with dignity and respect. She enjoys working in the yard and spending time with her family.

Amanda Bartley
Billing

Amanda Bartley joined our team in April 2015, as a Billing Specialist. Prior to joining our team, she was employed by Pathology Service Associates and Carolina Medcare. Her main responsibility is to ensure timely and accurate billing for all of our services and she also assists with other front desk responsibilities as needed. Amanda’s goal is to ensure she is providing efficient and professional service to all of our patients.

April Nesmith
Front Desk/Chiropractic Assistant

April began working with our team in October 2016 as a Chiropractic Assistant. Her main focus is coordinating the treatment and care of personal injury patients. She also helps with front desk duties and assists the chiropractors as needed. She strives to provide excellent care to her patients. Prior to coming to our team, April worked as a Certified Surgical Technologist in the Cardiovascular Department of McLeod Regional Medical Center. April enjoys spending time with her family and friends.

Denise Rose
Chiropractic Assistant

Denise began working with our team in February 2017 as a Front Desk Associate. She quickly moved into a Chiropractic Assistant position because of her love and compassion for her patients. Prior to joining our clinic, she worked in the mortgage industry for 24 years and worked with JPMorgan Chase as a supervisor. Denise is dedicated to providing excellent care and treatment to each individual’s needs. In her free time, she loves spending time with family and creating a fun environment for children.

Lakeshia Mumford
Chiropractic Assistant

Lakeshia began working with our team in May 2019 as a Medical/Chiropractic Assistant. Her main focus is to assist the Nurse Practitioner in gathering critical information on each patient prior to their exam. She also assists with providing therapies to our personal injury patients. Prior to coming to our clinic Lakeshia worked at Florence County Disabilities Special Needs Board as a Vocational Specialist for 16-1/2 years. In her free time, she enjoys volunteering in the community helping the elderly and others who may be in need. She enjoys singing, shopping, readings and listening to music.

Stephanie Brett,
Front Desk Conway Location

Stephanie began working at Keystone Healthcare and Wellness of Conway in January of 2019 as Front Desk Associate. Prior to joining the Keystone Team, she worked in the health industry as the center manager for a home respiratory company for over 13 years. Stephanie enjoys assisting with the treatment of our personal injury patients as well as getting to know each patient on a personal level. In her free time, she enjoys reading, traveling and spending long days on the beach.

Deavin Jackson,
Chiropractic Assistant Bennettsville Location

Deavin began working at our Bennettsville office when it opened in April 2018, as a Chiropractic Assistant. He is responsible for providing active and passive therapies to our patients and ensuring they are comfortable and well taken care of throughout their treatment with our clinic. He is a native of Hartsville, SC and the owner of Glad Rags Apparel, which he launched in 2017. He is an all-around guy, who loves God and helping others. In his spare time, he enjoys hanging with family and friends, and great food. His motto is “If you put your mind (and some work) to it, there’s nothing that you can’t accomplish”.