Meet Our Staff

The IPC staff is a team of proficient doctors, nurses and physician assistants with nearly 40-years of experience in the field of pain management and control.


Learn a little more about us and what we can do for you.

Dr. Wynndel Buenger

IPC Founder

“When I meet with my patients, my ultimate goal is to explain what is causing their pain and then provide them with recommended treatment options. As a physician, I strive to remain up-to-date on the latest medical procedures and medications that can help my patients return to normal function. I look forward to playing an integral part in your overall health.”

Dr. Buenger practices at our O’Fallon location every Monday and our Alton location Tuesday through Thursday. He conducts surgeries on Fridays at Alton Memorial Hospital or Missouri Baptist Medical Center. Dr. Buenger is currently accepting new patients.

Katie Barnard


“My background has focused primarily on Urgent Care; however, I have grown to love pain management. I enjoy being able to follow my patients through their journey of feeling better. My goal as a provider is to listen to my patients, educate them regarding their diagnosis, and provide a plan of care that is safe and individualized.” 

Katie practices at our O’Fallon location every Monday and Thursday and our Alton location every Tuesday and Wednesday. Katie is currently accepting new patients.

Brandy Byrd


“I have worked in pain management under Dr. Buenger since 2015. Pain management is a specialty where most patients are seen on a regular basis. As a provider, I enjoy seeing my patients frequently and getting to know them and learning about their lives. It’s also a great feeling when patients come back after a procedure or medication change that has allowed them to do things they could not do before. It’s very rewarding to help them spend more time doing what they love.”

Brandy practices at our Alton location Monday through Thursday and is currently accepting new patients.

Candace Charles


“As a proud Army veteran, I have been practicing medicine for over 28 years with most of it achieved through the Army. Helping people has been my passion for as long as I can remember, so medicine was naturally a great fit for me. I have experience as a Respiratory Therapist in addition to my Physician Assistant proficiency.

I never thought I would gravitate towards the field of pain management until I started working with Dr. Buenger in 2015. I saw how passionate he is about pain control and how he makes a difference in so many of his patients’ lives. As I began to experience the same fulfillment with my own patients, I knew this was my calling and where I belonged.

It is my goal to give my patients back the part of their life they feel chronic pain has taken from them. Working cohesively with the IPC team allows me to do just that.”

Candace practices at our O’Fallon location Monday through Thursday and is currently accepting new patients.

Tricia Clayton


“I personally feel like the Lord has me right where he wants me. I love being able to get to know my patients and their families while working together to develop a treatment plan that best fits their needs.

My favorite part about this job is helping to improve the functionality and quality of life for my patients. I love to teach and explain the disease process and the many treatment options available, as well as the evidence-based practice/research surrounding these treatment plans.

There are times when my job isn’t just about treating a condition that already exists, instead it’s about prevention. I like to get to know my patients to the point where I know what motivates them so I can utilize this in setting goals and getting them on the path to wellness.”

Tricia practices at our Alton clinic Monday through Thursday and is currently accepting new patients.