About Us



Our goal is to make a difference in our patients' lives by partnering with them to improve their physical and mental well-being. Our goal is to provide complete and compassionate care to our patients, and we look forward to working with them as they grow and mature.

We strive to become a partner with our patients on their road to health and wellness. We care passionately about our patients and strive to provide complete medical care to fulfill and meet their health needs.


Originally founded by Dr. Robert Reeder 37 years ago in West Chicago, the practice was moved 20 years ago to its present location in St. Charles.  Dr. Catherine Thomas purchased the practice from Dr. Robert Reeder in 2010, and he retired from the practice in June of 2011.  Since then, Fifth Ave Primary Care Physicians has continued to provide quality care to its patients and the local community.

High Standards

A standard of excellence in personalized care enables us to provide the quality medical services our patients deserve. 

Education & Prevention

As a practice, we truly believe that preventative care and education are the keys to optimal health.  We focus on thorough exams – inquiring about your overall health at each visit. We also know that routine exams are helpful in preventing more advanced conditions or disease.  A review of your medical history can help us stay informed of your overall health, any new medications, and any illnesses that may impact your health.

Uncompromising Safety

Infection control in our office is also very important to us.  To protect our patients and ourselves, we strictly maintain sterilization and cross contamination processes using standards recommended by the American Medical Association (AMA), the Occupational Safety and Health Administration (OSHA), and the Center for Disease Control (CDC).

Training & Expertise

As your healthcare professionals, we want you to be confident knowing that we are a team of highly trained and skilled clinicians.  We pride ourselves in providing the care you need to keep you healthy. To give you the best possible service and results, we are committed to continual education and learning.  Also, being members of various professional associations helps us to stay abreast of the changes and recommendations for our profession.

A Positive Experience

Building a foundation of trust by treating our patients as special individuals is vital to our success.  We understand how uneasy some patients can feel about seeing the doctor, and we know that we can make a difference by providing a positive experience. 
Our entire staff is dedicated to providing you with excellent care.

We thank you for allowing us to take care of your medical needs and look forward to serving you.

Two Convenient Office Locations 

St. Charles Office
2570 Foxfield Rd, Suite 100
St. Charles, IL 60174
Phone: (630) 584-1950
Fax: (630) 584-8994


South Elgin Office
472 Briargate Drive
South Elgin, IL 60177
Phone: (630) 584-1950