About Us

Dr. Stephen Endres opened Pain Clinic of Northwestern Wisconsin in Eau Claire, WI in 1999. He was the first interventional pain physician in western Wisconsin. Our physicians are board-certified in Anesthesiology. We offer diagnostic assessments of pain problems and provide therapeutic modalities. Our friendly, understanding staff works with other healthcare professionals to provide continuity in pain management. As a patient, our highly skilled pain management specialists will work closely with you and your primary physician, taking a multidisciplinary approach through services such as:

  • Physical Therapy
  • Injection Therapy
  • Behavioral Health Counseling
  • State-of-the-art technology
  • COOLIEF* Cooled RF Treatment for Knee Pain

Our Doctors

Learn more about our friendly, highly experienced doctors below!

Dr. Stephen Endres, MD, DABPM - Pain Clinic of Northwestern Wisconsin - Eau Claire, WI

Stephen Endres, MD, DABPM


Interventional Pain Management


University of Minnesota School of Medicine – Minneapolis, MN

Academic Appointments

  • Assistant Clinical Professor – Department of Anesthesiology – University of Wisconsin – Madison, WI
  • Assistant Clinical Professor – School of Nursing – University of Wisconsin – Eau Claire, WI

Board Certification(s)

  • American Board of Anesthesiology – 1987
  • Diplomate of American Academy of Pain Management – 1992
  • Diplomate of American Board of Pain Medicine – 1994
  • American Board of Anesthesiology, Subspecialty Board in Pain Management – 1994
  • Recertification in Subspecialty Board in Pain Management – 2005


Pain Management

Dr. Endres has been working in the subspecialty area of pain management for over 20 years. He was the first physician in western Wisconsin to use fluoroscopy when performing spinal injections and procedures.

Professional Societies

  • Past President, Spinal Intervention Society (SIS)
  • Past Chairman, Spinal Intervention Society Education Committee
  • American Academy of Pain Medicine
  • American Medical Society

Involvement in Medical Education

Master Instructor, Spine Intervention Society – Course instruction internationally for the last fifteen years in all aspects in diagnostic intraspinal and extraspinal diagnostic and therapeutic radiographic techniques.


  • July 2012 – presented Efficacy/Safety of Performing Fluoroscopically Guided Spinal Interventions in Conjunction with Anticoagulation Therapy at the Spine Injection Society 20th Annual Meeting, Las Vegas, NV.
  • Pain Medicine; “Efficacy/Safety of Performing Fluoroscopically Guided Spinal Interventions in Conjunction with Anticoagulation Therapy”. Volume 12, No. 9. 2011.
  • Clinical Anatomy of the Lumbar Spine and Sacrum 4e, Foreword by Stephen Endres. Elsevier: Sydney. 2005.
    Practice Guidelines: Spinal Diagnostic and Treatment Procedures; “Lumbar Disc Stimulation (Provocation Discography)”. Spine Intervention Society, 2004.
  • Spine Injection Society Standards and Protocols, “Lumbar Discography Standards”, February 2002.
  • Wisconsin Medical Journal, “Effectiveness of Intradiscal Electrothermal Therapy in Increasing Function and Reducing Chro nic Low Back Pain in Selected Patients”, volume 101, No. 1. 2002.

Post Graduate Education

  • Mayo Graduate School of Medicine, Anesthesiology – Rochester, MN
  • Medical Director, Pain Clinic of Northwestern Wisconsin 1989 – Present
  • Expertise in intraspinal and extraspinal diagnostic and therapeutic radiographic guided techniques.

Dr. Mark Schlimgen, MD, DABPM - Pain Clinic of Northwestern Wisconsin - Eau Claire, WI

Mark Schlimgen, MD, DABPM


  • Pain management
  • Spinal injections
  • Radiofrequency lesioning
  • Spinal cord stimulator and pump placement
  • Use of fluoroscopy


Dr. Mark Schlimgen received his medical degree from the University of Nebraska Medical Center in 1992. He completed his internship and residency at the University of Wisconsin-Madison and is Board Certified in Anesthesiology and Pain Medicine. He is an instructor for the Spine Intervention Society (SIS). Dr. Schlimgen’s goal is to reduce pain and increase function for patients by providing diagnostic and therapeutic spinal injections.

Kevin Moore, RN


  • B.A. Psychology – State University of New York, Plattsburgh
  • BSN – University of Wisconsin, Eau Claire


  • 7 years Acute Care Neuroscience and Trauma
  • 4 years Neurosurgery First Assistant
  • 10 years in Pain Management specializing in Neuromodulation for pain relief and spasticity

Kevin Moore provides skilled nursing support, coordination for neuromodulation screening trials and surgical procedures, and technical assistance with implanted devices.

Deb Callow, RN

Deb Callow is certified as an adult/gerontology Nurse Practitioner through the American Association of Nurse Practitioners. She completed her Doctor of Nursing Practice Degree (DNP) at the University of Wisconsin – Eau Claire in 2019 with a focus on primary care for the adult population. Deb completed her associated degree Nursing in 1994 at Gateway Technical College in Kenosha, WI, and her bachelor’s degree in Nursing at UW- Eau Claire in 2015. Deb is married and enjoys gardening and crafts in her spare time.

For more information about our practice, or to schedule an appointment, contact us today at 715-552-5346. We look forward to working with you!