Our Physicians & Advanced Practice Clinicians
The physicians of Columbus Arthritis Center understand and are devoted to providing the highest quality care to patients with rheumatic diseases.
Learn more about our individual physicians and physician assistants:
Sterling W. Hedrick, M.D., FACR
Catherine Lee, M.D., FACR
Kevin D. Schlessel, M.D., FACR
Jennifer M. Richardson, M.D., FACR
Anupama Chauhan, M.D., FACR
Marc A. Antonchak, M.D., FACR
Joseph Flood, M.D., MACR, FACP
Matthew L. Mundwiler, M.D., FACR
Namrata Dhillon, M.D., FACR
Navya Parsa, M.D., FACR
Jacob Seymour, D.O., FACR
Meriah Moore, M.D., FACR
Our Advanced Practice Clinicians
Shannon Ghizzoni, PA-C
Candice Devol, PA-C
Shannon Mallory Fatseas, PA-C
Chelsea Austen, PA-C
Sarah Riley, PA-C
Riddhi Patel, PA-C
Michelle Devilbiss, PA-C
Chrissy Halligan, FNP-BC
Meredith White, PA-C
Through the examples of great teachers and role models, as well as an interest in the study of immunology and anatomy, Dr. Hedrick decided to become a Rheumatologist. He believes that it is a specialty that can allow his patients to see a difference in their quality of life and one that can produce positive outcomes quickly.
Dr. Hedrick is very active on the Board of Directors at Ohio Dominican University where he leads the task force on medical education and curriculum development.
“I became a rheumatologist because in medical school, the Rheumatology rotation had the most interesting patients. Not only were there physical findings but the entire body had to be considered. The field encompasses all of medicine.”
In her free time, she enjoys traveling, reading, indoor gardening, hiking, and race walking.
As president of the Columbus Arthritis Center, Dr. Schlessel is grateful for the opportunity to care for patients in one of the largest, and what he considers to be the best, single specialty rheumatology group in the country. He is privileged to be able to utilize his years of education, knowledge and experience to improve the lives of his patients.
She decided to become a Rheumatologist after seeing how much physicians could help those living with autoimmune conditions. She believes with early diagnosis and treatment, patients can see a vast improvement in their quality of life.
Dr. Richardson has been recognized as a Medical Honoree through the Arthritis Foundation, is an active volunteer for Walk With a Doc 50 Mile Challenge and the Thanks for Giving 4 miler.
Dr. Richardson and her family enjoy spending time together outdoors traveling, hiking, and skiing. She has completed multiple marathons, triathlons, and an Ironman.
She became a rheumatologist for several different reasons. She feels that if she can help her patients decrease their pain, by even just 10 percent, than she knows she is helping them. She is continually inspired by the strength she sees in her patients. The newer therapies for arthritis have changed Rheumatology forever. She has seen how these new medications, especially in patients with many years of rheumatoid, quickly allow them to feel better. This effect on their lives, continues to amaze her.
Dr. Chauhan and her husband are active in the community by supporting a variety of non-profits throughout Ohio and around the world. Their focus includes institutions that promote the arts, education, and healthcare to underserved populations.
He is on the Board of Directors for the Ohio Association of Rheumatology and has been honored as the Arthritis Foundation’s Medical Honoree for the “Walk to Cure Arthritis”.
He enjoys running, gardening, spending time with his wife and kids.
He became a Rheumatologist because of his interest in rheumatic diseases, a true compassion for his patients who live with these conditions, and his desire to have long-term relationships with the patients he treats. He enjoys continuously learning about the science of rheumatology and immunology.
Dr. Flood has been recognized as a Master of the American College of Rheumatology (ACR) and has served as its president. Along with being an active volunteer with ACR, Dr. Flood has served on the Board of Directors of the Rheumatology Research Foundation and the local Arthritis Foundation.
He and his wife Jeanne Likins have two male Ocicats who are as rambunctious as they are sweet. Both Dr. Flood and Jeanne enjoy traveling, cooking, and being a part of the German Village Society.
Early in his medical education, Dr. Mundwiler knew that his goal was to help his patients live their best lives. He found that the specialty of Rheumatology provided the unique opportunity to practice medicine in a truly holistic way. For him, it’s been exciting to utilize the ever evolving tools available to help people reduce their pain, move more freely, and regain function.
To help advance the field of rheumatology and continually be an advocate for patients, Dr. Mundwiler has served on the Government Affairs Committee and Political Action Committee of the American College of Rheumatology.
Dr. Mundwiler enjoys spending time with his two children, dabbling in music, and playing golf and tennis.
“I became a Rheumatologist because the specialty offers a taste of challenging medicine, but at the same time provides unmatched work/life balance. Additionally, with the amount of ground-breaking research and medication discovery in this field in recent years, it is a very rewarding time to be a Rheumatologist- I believe I can actually make a palpable difference in patients’ lives, and nothing is more fulfilling than that.”
Dr. Dhillon enjoys her family and traveling to new and exciting destinations. She is active in giving back to the community by volunteering for organizations that serve the under and uninsured and has traveled to India to treat those with rheumatological conditions, as well as volunteering at an HIV clinic of orphaned children.
Dr. Seymour was drawn to the field of Rheumatology because it combined his two favorite subjects in medical school: the muskuloskeletal system and immunology. Through innovative treatments, he feels the impact a rheumatologist can have is unique – improving quality of life and restoring function in those with arthritis and autoimmune conditions. He enjoys establishing long-term relationships with his patients and passing along his passion for preventative medicine.
Dr. Seymour is an avid reader, NBA basketball fan, and an aspiring green thumb. He enjoys all things active including running, golfing, and sailing with his wife. He remains an active mentor within the Crohn’s and Colitis Foundation of America.
She chose to become a Rheumatologist to help her patients make progress towards their functional goals. She is continuously inspired by her patient’s resiliency and is committed to providing them with expert medical care.
Dr. Moore enjoys spending time with her family, acrylic painting, hiking and running.
She decided to practice in the field of Rheumatology because she enjoys being able to practice autonomously while having guidance from physicians, when needed. She also has several family members with autoimmune diseases and finds that being able to treat the diseases effectively is rewarding for her and her patients.
Shannon enjoys spending time with her family and friends, especially her young daughter. She is an avid soccer fan and player, she enjoys rock climbing and hiking, as well. Shannon also teaches future Physician Assistants at Ohio Dominican University.
Candy knew from an early high school age that she wanted to become a Physician Assistant because she wanted to work in the medical field and provide direct patient care. She decided to pursue Rheumatology because of her interest in autoimmune diseases and having the opportunity for long-term follow-up with patients.
Candy enjoys staying active with her family, including her two young sons. She is an avid reader, enjoys hiking, biking, and traveling.
Mallory greatly enjoys the team approach to medicine at CAC. The best part of working at CAC to her, is getting to know her patients over the years, and finding the right treatment strategies which improve their lives. She enjoys continually learning about autoimmune disease. Mallory is continually humbled by the strength and perseverance of the patients.
In addition to spending time with her husband, young son and two dogs, Mallory enjoys yoga. She also enjoys cooking and testing new healthy recipes (she was previously a dietitian), and has a passion for nutrition. Lastly, Mallory is an avid football fan, her favorite teams include the Cleveland Browns and the Ohio State Buckeyes.
Chelsea has always had a desire to pursue medicine and that was confirmed during a medical mission trip to Costa Rica. Making a difference in people’s lives by performing as simple a task as prescribing vitamins or diagnosing an ear infection solidified that decision.
Rheumatology first caught her interest during her time at ODU while listening to the lecture on rheumatology by Shannon Ghizzoni, PA-C. After completing a rotation at Columbus Arthritis Center, she felt her mind and heart were captured by the field of rheumatology. She enjoys solving the puzzle of autoimmunity and finds it rewarding when the right treatment plan is in place and the patient begins to feel better.
Chelsea loves Columbus! She enjoys cheering on the Blue Jackets and exploring the city’s Metroparks. When the weather cooperates she enjoys spending time outdoors with her dog, Scout, and husband, Matt. When the weather is not cooperative, you will often find Chelsea watching a game of Jeopardy.
Sarah decided to become a Physician Assistant because she values spending time with patients and working as a part of a team to provide greater access to healthcare. She finds rheumatology to be a rewarding field because she can help to maintain joint function so that patients can continue to do what they love to do every day!
She enjoys all things Disney, camping, and spending time with her husband and family.
She decided to become a Physician Assistant in order to help patients improve and understand their health. She enjoys spending time with her patients as she helps them understand the complexities of diseases and the risks/benefits of treatment plans.
Her decision to practice in the rheumatology is because she finds the diseases are often unique, can be complicated, and the treatment and understanding of these diseases is constantly evolving. She hopes to help her patients understand their arthritic or autoimmune condition, help them be comfortable with a treatment plan, and help them relieve their pain and improve their quality of life.
Riddhi enjoys traveling to fun and exciting places, but you will also find her spending time with a good book while enjoying the outdoors.
Prior to her career as a Physician Assistant, she earned her Master of Public Health in Nutrition from the University of North Carolina at Chapel Hill and worked as a Registered Dietitian-Nutritionist. As a PA, she is able to expand the tools she gained from her nutrition background to focus on holistic wellness and improved quality of life for patients.
Committed to lifelong learning and academics, she enjoys applying the most current research and evidence-based treatments in order to help patients live and thrive with arthritis and other chronic autoimmune conditions managed at CAC.
She enjoys spending her free time with her husband and cats, cooking, reading novels, and exploring Columbus’s metro parks.
Michelle has always had an interest in pursuing a career in the medical field and decided to become a Physician Assistant so that she can provide high quality medical care to patients while working closely with a healthcare team.
She is passionate about helping patients improve their quality of life in order to remain active and continue the activities they enjoy on a daily basis; this is why she decided to pursue rheumatology.
She loves living in Columbus and exploring all that the city has to offer. She enjoys reading, traveling, and running.
Chrissy started her career at Columbus Arthritis Center in 2012 as an RN in the infusion center and worked her way to leading the nursing team as the Clinical Manager. Her love of learning, passion for providing care to others, and the relationships she made with her infusion patients is what lead her back to school to further help them in their life-long journey with their autoimmune diseases.
Prior to her life in Columbus, Chrissy was born and raised in Southeastern Kentucky and is proud of her country roots. She is an avid do-it-yourselfer and enjoys any and all home projects. If she isn’t renovating a kitchen or building a deck, you can find her painting a friend’s house for fun. She is a performer at heart and loves to have a guitar in her hands. She adores time with her spouse, family, friends, and her two Shih-Tzu’s.
Meredith worked at the Columbus Arthritis Center from 2017-2018. In 2019 she relocated to Portland, OR where she worked at Oregon Health and Science University. In 2022 she had the opportunity to return to Columbus and is thrilled to be back with her colleagues and mentors at CAC.
Meredith is passionate about rheumatology and education. She enjoys working closely with patients to achieve their goals and improve their quality of life. She is also an active member of the American College of Rheumatology. In her spare time she can be found chasing her toddler or visiting friends and family.