Hello, my name is Christa Springston. As a board-certified Internal Medicine medical doctor (M.D.), I have a desire to offer improved care for people and their health outside of the conventional healthcare system. HealthSprings Direct was established in 2020 with aims to provide enhanced primary medical care without the limitations imposed by most insurance-based care. 

As an advocate for whole-body health, I will help guide you in behavioral, dietary, and habitual improvements to maximize your energy and functionality and prevent life-altering disease processes. I practice medicine based on continually evolving scientific evidence, safety, and efficacy while always considering the entire individual.

I graduated Magna Cum Laude from Texas Christian University with a bachelor of science in biology, and received a medical degree from the University of Texas Health Science Center at San Antonio in 2006. I was residency trained at Christiana Care Health System in Newark, Delaware and SSM St. Mary’s Health System in St. Louis, Missouri.

As a military spouse who has moved frequently across the country, I have had the opportunity to experience and hone many different types of medical care. I have worked as a hospital medicine doctor (hospitalist), intensive care unit physician (intensivist), occupational medicine provider, acute and urgent care physician, and primary outpatient Internal Medicine provider.

I am certified to perform Class 1, 2 and 3 Federal Aviation Administration (FAA) Exams. Continuing education is important to me as a participant in the Maintenance of Certification program through the American Board of Internal Medicine.

Within the community, I volunteer as the medical director, board member and provider for The Healing Bridge Clinic, a non-profit medical clinic caring for the underserved locally. As the medical director for Peachtree City Fire and EMS and Fayette County Fire and EMS, I enjoy working with firefighters, EMTs and paramedics with their medical protocols and procedures through education and training.

Originally from Fort Worth, Texas, I have called Georgia home since 2015. I enjoy spending time with my family, watching Horned Frog football, and especially living and working through Him.

We are excited to welcome Robert Theriault, D.O. to our practice! Dr. Theriault comes to us from New Hampshire, where he cared for families and individuals of all ages for nearly three decades. With 29 years of experience in family medicine, he brings a wealth of knowledge, deep compassion, and a patient-centered philosophy to our team.

Dr. Theriault earned his Bachelor of Arts in Zoology with a minor in Philosophy from the University of New Hampshire in 1987. He went on to complete his medical training at the Philadelphia College of Osteopathic Medicine in 1991, and then completed his Family Practice Residency at Peninsula Hospital Center in Queens, New York in 1994.

In 2024, Dr. Theriault and his wife made the move to Georgia with their three children in search of warmer weather, new adventures, and a fresh chapter both personally and professionally. He is passionate about forming lasting relationships with his patients and is thrilled to practice in a Direct Primary Care setting, where he can offer more time, attention, and truly individualized care.

Dr. Theriault enjoys spending time outdoors and exploring nature. He welcomes patients of all ages, starting at 2 years old, and looks forward to getting to know each of you and supporting your journey to better health.

Erin Raser, PA-C is a dedicated and compassionate physician assistant specializing in direct primary care and internal medicine. She earned her Bachelor of Science in Public Health (Pre-Professional Studies) from Clemson University in 2002, followed by a Master of Science in Physician Assistant Studies from the Medical University of South Carolina in 2006. Over the past 18 years, Erin has practiced in a variety of settings—including Family Practice, Women’s Health, Urgent Care, and Internal Medicine—managing both acute illnesses and chronic diseases.

Her career has taken her from Oklahoma to South Carolina, Colorado, and Georgia, accompanying her husband’s service in the military and later his career in the airline industry. In addition to her clinical work, Erin has enjoyed precepting future physician assistants and teaching Anatomy and Physiology at both the high school and college levels. She has also participated in medical mission trips to Guatemala and Haiti, and has volunteered weekly at The Dream Center Women’s Clinic in Colorado Springs.

Erin looks forward to forming trusting, long-term relationships with her patients, serving as their advocate and helping them achieve their health goals. She believes in practicing what she teaches—emphasizing nutritious whole foods, regular physical activity, and quality sleep. Outside of work, Erin loves traveling to both the mountains and the beach (and still hasn’t decided which she prefers!). She cherishes time spent raising her three active children, finding “me time” at the gym, and relaxing behind the canvas with a paintbrush in hand.

Erin is a proud member of the American Academy of Physician Associates and remains committed to ongoing professional growth and excellence in patient care.