An Oshkosh native, Dr. Jack (John) Leschke is a dual board-certified spine surgeon having completed training in both Neurosurgery and Neurology. He received his medical degree and completed his residency in Neurology at the Medical College of Wisconsin followed by a residency in Neurosurgery at the University of Minnesota.Jack (John) Leschke MD is currently seeing patients in Fox Valley and Oshkosh.
An Oshkosh native, Dr. Jack (John) Leschke is a dual board-certified spine surgeon having completed training in both Neurosurgery and Neurology. He received his medical degree and completed his residency in Neurology at the Medical College of Wisconsin followed by a residency in Neurosurgery at the University of Minnesota.Jack (John) Leschke MD is currently seeing patients in Fox Valley and Oshkosh.
Jack (John) Leschke MD is currently seeing patients in
Fox Valley and Oshkosh.
An Oshkosh native, Dr. Jack (John) Leschke is a dual board-certified spine surgeon having completed training in both Neurosurgery and Neurology. He received his medical degree and completed his residency in Neurology at the Medical College of Wisconsin followed by a residency in Neurosurgery at the University of Minnesota.
Dr. Leschke has a specialized interest in minimally invasive spine surgery and treats a wide variety of neurological conditions of the spine including neck and back pain, spinal fractures, spinal tumors, spinal stenosis, spondylolisthesis, degenerative spine disease, spinal arthritis, pinched nerves, sciatica, and more. Some of the treatments and procedures he performs for these conditions include cervical, thoracic and lumbar diskectomy, laminectomy, spinal decompression, posterior fusion, interbody fusion, artificial disk replacement, and more.
Dr. Leschke says that the best part of his job is not only taking care of his patients and restoring their quality of life, but also being able to continuously learn the landscape of spine surgery as it evolves, improving himself for his patients.
In his free time, Dr. Leschke enjoys spending time with his wife and children. He also enjoys music in all forms, playing the piano and guitar, spending time outside or playing sports like tennis and golf.

No pre look at mri makes me trust a doctor less . I was happy with his information he gave me but when I go in and have to repeat information to front desk, two nurses and him, it is very frustrating. Communication between you all happens or not? My biggest issue, that visit could and should have been done via zoom call. I was there for two hours in pain, the information I got took 5 minutes. This should be something your workplace does often. Overall I felt it was a waste of time. Why didnt the doctor have the mris sent over before today? Mri was taken over 6 weeks ago. This is supposed to be one the best places in the state/ country? Not impressed at all
Love Dr Leschke. He listens and offers help. He cares about his patients. No one else I would want to go to for my care.
I trust Dr. Leschke. He did an excellent job with my back surgery with a quick recovery. He has a positive, warm and likable personality. I definitely recommend him to others without any hesitation.
Good and trustworthy
I went from "Hopeless to Options"
On September 22nd 2025 I had a Spine Surgery at ST ELIZABETH HOSPITAL in Appleton by Dr Leschke the surgery my understanding took 3/12 hours and 6 hours recovery in the recovery room I was in the hospital 3 days upon going home which we live in GreenBay Wi I was in severe pain and discomfort pain my medication giving some relief while at home I developed an infection in the spine area where my surgery was I feel it was caused from the saturated gauze on my incision from surgery which wasn’t changed for 3 days At home I was prescribed an antibiotic for infection from Dr Letchke immediately In all respect this was wearing a neck brace from September 22 which did heal I wore the neck brace 24/7 for 6 weeks and 4 days Looking back the procedure was the most painful I have ever experienced but in the long run will have a full recovery down the road I’m able to go without out my neck brace with common sense All in all t would recommend Dr Leschke for Spine surgery he was outstanding Thankyou
Nice guy!
Very professional, explained everything he was going to do. I was treated with respect and taken seriously. My pain was terrible. After surgery I felt so much better right away. I’m very thankful.
Every thing was great always room for improvement never perfect
Dr. Leschke took the time to listen to my concerns and explained all of my options. I feel very comfortable going into my upcoming surgery.