Through our doctors’ extensive post graduate studies and clinical research, Pierce Clinic of Chiropractic of St. Petersburg has become recognized as one of the most advanced clinics in the nation utilizing the Advanced Orthogonal Adjusting Procedure.


Dr. G. Stanford Pierce Sr.

Founder & Clinic Director

Dr. Pierce, a third generation Chiropractor, has practiced in St. Petersburg, FL since 1968. He was the third recipient of the C.C.E. Sherman College Board Certification in Atlas Orthogonality and has attended over 50 symposiums in the analysis and treatment of neck conditions. In addition to being the founder and developer of the Advanced Orthogonal Techniques and Procedures program, Dr. Pierce was an instructor for the R.W. Sweat Foundation of Atlanta, Ga.


He is currently the Lead Instructor on the Advanced Orthogonal Technique and designed the Advanced Orthogonal Percussion Adjusting Instrument. Dr. Pierce has participated on the Extended Faculty of the Sherman College of Chiropractic, Life Chiropractic College West, and Palmer College of Florida. He also developed the first Post Graduate Intern Program for Advanced Upper Cervical Doctors. Dr. Pierce is a dedicated Christian, husband, father, grandfather, great grandfather and enjoys an occasional game of golf.

Dr. Jeremy Miller

Certified Advanced Orthogonist

Dr. Miller was born and raised in the heart of the Midwest, Des Moines, Iowa. He received his bachelor’s degree from Simpson College. Throughout his high school and undergraduate studies, Dr. Miller always loved science, and helping people, but he didn’t find a career that resonated with him until he discovered chiropractic.

Dr. Miller attended Life University in Marietta, GA where he duel-enrolled in the Doctorate of Chiropractic program and the Sports Health Science Master’s program. During his time at school, Dr. Miller was able to work with and provide pre and post event care to athletes from Life University as well as from Kennesaw State University. During the last half of his schooling, he was accepted into an honors research tract. He worked extensively with faculty doctors and specialized in upper cervical chiropractic research. Dr. Miller completed a study on Atlas adjustments and balance that is pending publication.

Dr. Miller graduated from Life University with a Doctorate in Chiropractic with Research Honors and a Master’s in Sports Health Science. He completed the Advanced Orthogonal Fundamentals series as well as an Advanced Orthogonal Internship where he dedicated himself to advancing his skills. In addition to being a treating doctor at the Pierce Clinic, Dr. Miller also serves as the Director of Research and Development for the Advanced Orthogonal Institute. Today, Dr. Miller is excited to be able to use his skills and training to help people live a better quality of life, by restoring health and function to his patients. He enjoys spending time with his wife, who is an animal chiropractor, playing golf, and reading.

Dr. Chris Slininger

Certified Advanced Orthogonist

Dr. Slininger, his amazing wife, Mary, and four children have lived in and served the St. Petersburg community since 2013. He joined the U.S. Army Reserves after high school serving in Kuwait during Operation Iraqi Freedom as an engineer. He served as a Training NCO in the Medical Corps for nine years. While serving, he completed his Bachelor of Science degree as an Athletic Trainer. He went on to complete his Doctorate of Chiropractic from Life Chiropractic College in Hayward, CA where he focused on Upper Cervical Chiropractic Care. Upon graduation in 2013, he moved to Florida to intern at Pierce Clinic and was subsequently promoted to a full associate treating doctor position.

Dr. Slininger is one of only 40 Diplomates in Chiropractic Craniocervical Junction Procedures through the International Chiropractic Association’s Council on Upper Cervical Care and is the only Certified Advanced Orthogonist with this degree. He is also Executive Director and an Instructor at the Advanced Orthogonal Institute and currently serves on the Chair of the Strategic Action Committee of the International Chiropractic Association’s Council on Upper Cervical Care. Dr. Slininger’s vision is to see the world have access to the incredible health benefits that come through upper cervical care and his passion is to see health restored to families in a way that will bless them for generations.

He enjoys surfing, videography and studying history, but most of all he loves the Lord, his wife and his family.

Dr. Theodore Berlingeri

Advanced Orthogonist

Dr. Theo is originally from Bergen County, NJ. At a young age, chiropractic made a long-lasting impression on him as he witnessed his mother regain her life back from a serious health condition after receiving chiropractic care.  Over a decade later, while working at an extended volunteer program, Dr. Theo began to grasp the significance of the healing art of chiropractic. 

In 2016, Dr. Theo enrolled at Palmer College of Chiropractic in Davenport, IA where he eventually earned both is Bachelor of Science and Doctor of Chiropractic degrees.  Early in his academic career, he became fascinated with Upper Cervical Chiropractic and began studying Advanced Orthogonal in 2018 through seminars taught at Pierce Clinic of Chiropractic.  He moved to St. Petersburg in March 2020 where he took full advantage a long-anticipated Pierce Clinic internship.  Following his graduation from Palmer College, Dr. Theo joined our team to serve the people of our community.


Aside from Upper Cervical Chiropractic, Dr. Theo is passionate about spending time with family, teaching yoga and community building.


Dr. Josh Smith

Advanced Orthogonist

Dr. Josh was born in the midwestern state of Kansas.  After his father was offered a pastoral job in Fairbanks, he and his family moved to Alaska in 1992. Following his father’s footsteps, Dr. Josh initially pursued a life in ministry, receiving his bachelor’s degree from Wayland Baptist University in Religious Education and Music.

Shortly after finishing college, Dr. Josh suffered a significant back injury. This injury greatly affected his daily life and ultimately led him to discover the incredible affects of Chiropractic care. In 2016, Dr. Josh decided to enroll at Life University in Marietta, Georgia. The time he spent there learning from his Chiropractic professors and professionals was invaluable. Mid-way through his program he was introduced to Upper Cervical Care. Through attending the Advanced Orthogonal Seminars in St. Petersburg, and personal conversations with Dr. Pierce Sr.’s grandson, Dr. Josh decided to pursue an internship with Pierce Clinic after his graduation. Due to his excellent accomplishments throughout his internship, along with his compassion for patients and staff, Dr. Josh was offered an associate doctor position.

Outside of Chiropractic, Dr. Josh spends time with his wife Whiley, and son Elijah. They are enjoying exploring their new life in St. Petersburg together. In his spare time, Dr. Josh can be found in the garage working on his motorcycle or reading about new and interesting hobbies to pursue.


Our expert Doctors are just the beginning.