Podiatry Staff

Meet Our Doctors

John M. Sigle, DPM

John Sigle, DPM, FACAS

Podiatrist in Springfield, Decatur & Taylorville, IL

Foot and Ankle Center of Illinois

A passionate practitioner of podiatric medicine and highly skilled surgeon, Dr. Sigle has worked and trained in hospitals and specialized medical centers around the United States and abroad. Since graduating with his Doctorate in Podiatric Medicine, Dr. Sigle has trained with some of the world’s most renowned foot and ankle surgeons.

Upon earning his doctorate from Dr. William Scholl’s College of Podiatric Medicine in 2000, Dr. Sigle completed a three-year residency at Botsford General Hospital, a nationally recognized teaching facility serving Detroit’s northwest suburbs. Dr. Sigle obtained comprehensive training in podiatric medicine, orthopedics, and forefoot/rearfoot/ankle reconstructive surgery. He played an active role in developing and executing clinical research projects and received the Alvin Yarrow Award for outstanding research. He participated in the Baja Project, providing surgical treatment for children with disabilities at the Mexicali Red Cross Hospital. He participated in Pediatric Surgical Missions to Tegucigalpa, Honduras, Central America, and the San Felipe Hospital to evaluate and treat pediatric and club foot patients. He also did a Pediatric Orthopedic Surgery rotation at Children’s National Medical Center in Washington, D.C.

Following his residency program, Dr. Sigle obtained an additional year of advanced residency at Kaiser Permanente Medical Center based in San Francisco, Oakland, and Walnut Creek, California. He trained under Dr. Jack Schuberth, a nationally distinguished podiatric surgeon. Dr. Sigle's tenure included surgical experience in reconstructive rearfoot surgery, open fractures, foot/ankle fractures and dislocations, and training in infection management, limb salvage, and advanced wound care.

Originally from Springfield, Illinois, and a graduate of Sacred Heart-Griffin High School and the University of Illinois, Urbana-Champaign, Dr. Sigle returned to during 2004 to work as a foot and ankle surgeon at the Orthopaedic Center of Illinois; and to join the physician's panel for Memorial Medical Center's Wound Healing Center. Continuing to advance his training and expertise, Dr. Sigle received certifications from Wright Medical for INBONE Total Ankle Replacement and STAR Ankle Replacement for Small-Bone Invasion. Dr. Sigle also completed advanced training in external fixation techniques for trauma and limb lengthening techniques for deformity correction at the Gavriil Ilizarov Hospital in Kurgan, Russia, under the tutelage of physicians who were trained by Dr. Ilizarov, the original inventor of the Ilizarov techniques. Dr. Sigle was interviewed on Russian Television during his visit to Kurgan.

Dr. Sigle served as a Clinical Assistant Professor at Southern Illinois University (SIU) HealthCare, Division of Orthopaedics from 2011 -2015. 

Key Professional Memberships
Diplomat, American Board of Podiatric Surgery in Foot Surgery
Diplomat, American Board of Podiatric Surgery in Reconstructive / Ankle Surgery
Faculty, American College of Foot and Ankle Surgeons
Member, American Board of Foot and Ankle Surgery
Member and Spokesperson, Illinois Podiatric Association
Member, American Association Podiatric Practice Management 
Member, Foot & Ankle Business Innovations (FABI) Mastermind Group
Member, Illinois Fall Prevention Coalition 

In July 2011, Dr. Sigle founded the Foot & Ankle Center Of Illinois to serve Springfield and the surrounding areas in central Illinois. Dr. Sigle went on to found the Illinois Laser Center in 2012 and, over the next five years, opened up six satellite outreach clinics across Central Illinois. He enjoys mountain biking, water skiing, snow skiing, travel, fitness, and reading.Dr. Sigle and his wife have three young children, and a dog named Zephyr.


Grant Gonzalez, DPM

Podiatrist in Springfield, Decatur, Carlinville, Shelbyville & Sullivan, IL

Foot and Ankle Center of Illinois

Grant Gonzalez, DPM, recently joined the Foot & Ankle Center of Illinois as a foot and ankle surgeon and podiatrist. He received his medical education at Des Moines University College of Podiatric Medicine and Surgery in Des Moines, Iowa. During his time at DMU, he also served as President of the American College of Foot and Ankle Orthopedics and Medicine Student Club. He completed a three-year podiatric and surgical residency at DeKalb Medical Center in Decatur, Georgia, where he served as chief resident. He is board eligible by the American Board of Foot and Ankle Surgery in Foot and Reconstructive Rearfoot and Ankle. He is a faculty member of the Podiatry Institute and member of the American Podiatric Medical Association (APMA), American College of Foot and Ankle Orthopedics and Medicine (ACFAOM), and American College of Foot and Ankle Surgeons (ACFAS). Dr. Gonzalez is also a lecturer for the Podiatry Institute.

Dr. Gonzalez received additional training in Advanced Techniques in Skeletal Fixation of the Foot and Ankle. During his residency he participated in a surgical mission trip to the Dominican Republic. He also had additional training in basic podiatric surgical fixations.

Dr. Gonzalez was a recipient of several awards during medical school and residency program. He is a member of the Phi Delta National Honor Society. He is a recipient of the ACFAOM Timothy Holbrook Memorial Award of Excellence. He received an American Podiatric Medical Association Foundation Scholarship and Des Moines University Merit Scholarship

Dr. Gonzalez specializes in all areas of foot and ankle care including bunions, hammertoes, neuromas, ankle sprains, heel pain/Plantar Fasciitis, ingrown toenails, toenail fungus, diabetic exams and ulcers, flatfeet, high-arched feet, Charcot joint disease, diabetic ulcers, complex reconstructive surgery, ankle arthritis/deformity, and lower extremity trauma.

Originally from Springfield, Illinois, Dr. Gonzalez attended Sacred Heart-Griffin High School and did his undergraduate work at Southern Illinois University at Edwardsville. After attending medical school, Dr. Gonzalez returned to Springfield to practice.

Dr. Gonzalez enjoys playing tennis, and fishing as well as planting and maintaining apple and nut trees. He and his wife Erin have two children, and a cat named Scarlett.


Dr. Jared Kennedy

Chiropractor in Springfield, IL

Foot and Ankle Center of Illinois

Dr. Jared Kennedy joined the Illinois Laser Center team in 2012 to provide consultation and treatment on the Cutting Edge MLS Laser and Cutera Laser Genesis. Dr. Kennedy is a Springfield native. He received a Bachelor of Science in Biological Sciences from Southern Illinois University, Carbondale, Illinois. He also received a Doctor of Chiropractic from Logan College of Chiropractic, Chesterfield, Missouri.

During medical school, he completed his student clinical experience at Montgomery Health Center in Chesterfield, Missouri. He also completed an out-patient clinical experience at Yorkshire health Center in Webster Groves, Missouri.

After graduating from Logan College of Chiropractic in 2011, Dr. Kennedy returned to Springfield to treat patients at the Springfield Accident & Pain Center. Dr. Kennedy has completed numerous continuing education courses since graduation and is working toward a Master of Science in Sports Science and Rehabilitation at Logan College. Dr. Kennedy is a member of the Illinois Chiropractic Society and American Chiropractic Association. He is also a certified laser technician for the Cutting Edge MLS Lasers and Cutera GenesisPlus Lasers.

According to Dr. Kennedy, “I was able to use a pain therapy laser in chiropractic school and I am excited to be able to offer this new and dramatic treatment option to our patients. Many patients, who haven’t had physical therapy for years, are able to get instant relief of pain. If you want an alternative therapy that is fast, effective, and affordable, the MLS Laser is a wonderful opportunity. Now I can use the laser in conjunction with other chiropractic protocols. We have seen a reduction of problems associated with injuries such as tendonitis, joint swelling, bulging discs, rotator cuff tears, carpal tunnel, and other shoulder and elbow indications. The results are pretty phenomenal and eight out of ten patients have dramatic results. We have successfully treated premiere high school and college athletes with acute ankle sprains, finger sprains, shin splints, neck and shoulder strains, tennis elbow, Achilles tendonitis, metatarsalgia, and muscle and bone contusions. These athletes, as well as their trainers and coaches are always eager to speed their recovery to get back into the game. The laser does an outstanding job of kick starting the healing process, reducing pain, and allowing them to compete at a high level. Our experience has been very rewarding.