The Medical Opinion Marketplace

Jacob Hagenbucher, D.P.M., is a foot and ankle surgeon and podiatrist who specializes in reconstructive foot and ankle surgery. He serves as an Assistant Professor in the Division of Vascular Surgery within the University of Wisconsin Department of Surgery. Dr. Hagenbucher earned his Doctor of Podiatric Medicine degree from Des Moines University and completed a Podiatric Medicine and Surgery residency with Reconstructive Rearfoot and Ankle Surgery training at Legacy Health / Kaiser Permanente Foundation in Portland, Oregon. He further advanced his expertise through a reconstructive foot and ankle fellowship at the Portland Foot & Ankle Institute. Board certified by the American Board of Foot and Ankle Surgery in both Foot Surgery and Reconstructive Rearfoot/Ankle Surgery, Dr. Hagenbucher treats a broad range of foot and ankle disorders with particular emphasis on complex reconstruction and limb salvage. His clinical interests include use of the Ilizarov external fixation technique for challenging deformity, trauma, and limb-threatening conditions. Dr. Hagenbucher’s research interests focus on diabetic limb salvage and improving outcomes for diabetic foot ulcers, and he is also engaged in resident medical education. He has contributed to peer-reviewed publications on topics such as insertional Achilles tendinopathy and assessment in podiatric medical education. He provides care in English.

Dan Olson, DC, is a chiropractor serving patients in Madison, Wisconsin. He provides chiropractic care focused on helping individuals improve function, mobility, and overall musculoskeletal health through evidence-informed, patient-centered treatment. Dr. Olson works with people experiencing common concerns such as back and neck discomfort, joint and soft-tissue strain, and movement limitations that can affect daily activities, work demands, and recreational goals. In clinical visits, Dr. Olson emphasizes careful evaluation and individualized care planning. Treatment may include chiropractic adjustments and other conservative, non-surgical approaches designed to support pain relief, restore range of motion, and promote long-term spine and joint health. He also encourages practical strategies patients can use between visits, such as posture awareness, activity modification, and therapeutic movement guidance when appropriate. Dr. Olson is affiliated with Group Health Cooperative of South Central Wisconsin (GHC-SCW) and is associated with the Capitol Clinic location. His approach prioritizes clear communication, collaboration, and helping patients understand their condition and treatment options so they can make informed decisions about their care.

Dr. Marilyn Kay, MD, is a physician specializing in ophthalmology. She provides evaluation and management of a wide range of eye conditions, combining clinical expertise with a focus on careful, patient-centered decision-making. Dr. Kay has a strong scholarly background, having contributed as an author to multiple peer-reviewed, PubMed-indexed publications. Her published work includes review and case-based writing on neuro-ophthalmology-adjacent topics such as optic neuropathy and ischemic optic neuropathy. This body of work reflects a sustained interest in conditions that involve the complex intersection of vision and the nervous system. In addition to clinical practice, Dr. Kay’s professional profile is consistent with an emphasis on neuro-ophthalmology, informed by her research themes and engagement within the neuro-ophthalmology community. Patients and colleagues value her thoughtful approach to complex visual symptoms, attention to diagnostic detail, and commitment to evidence-informed care. Dr. Kay is licensed to practice medicine in Wisconsin.

Michael D. Snyder, MD, is a neurologist with advanced expertise in neuromuscular medicine and clinical neurophysiology. He focuses on the evaluation and treatment of disorders affecting nerves and muscles, and he is experienced in diagnostic testing such as electromyography (EMG) and related neurophysiologic studies. Dr. Snyder also cares for patients with headache disorders, with a particular interest in migraine. Dr. Snyder earned his medical degree from the University of Iowa Roy J. and Lucille A. Carver College of Medicine. He completed residency training in neurology followed by fellowship training in neuromuscular medicine at Washington University and affiliated hospitals in St. Louis. He is board certified in Neurology by the American Board of Psychiatry and Neurology and holds subspecialty certification in Neuromuscular Medicine. In addition to clinical practice, Dr. Snyder has contributed to the peer-reviewed neurology literature. His approach emphasizes thoughtful assessment, careful interpretation of clinical and electrodiagnostic findings, and individualized treatment plans designed to improve function, relieve symptoms, and support long-term neurologic health.

Dr. Robert W. Graebner is a neurologist who provides comprehensive evaluation and care for patients with neurological conditions, with a clinical focus in neurophysiology and clinical neurophysiology. He practices at Dean Medical Center in Madison, Wisconsin, and is board certified in Neurology by the American Board of Psychiatry and Neurology. Dr. Graebner earned his medical degree from the University of Wisconsin Medical School in Madison. His postgraduate training includes a transitional internship followed by neurology residency training at leading academic medical centers, supporting a strong foundation in both inpatient and outpatient neurological care. In addition to his clinical work, Dr. Graebner has served as a Clinical Professor of Neurology at the University of Wisconsin–Madison, reflecting a longstanding commitment to medical education and the advancement of neurologic practice. He has also held leadership roles in military medicine as an officer in the U.S. Army Medical Corps, including service in a neurology department leadership position. Dr. Graebner’s professional contributions include scholarly authorship in the medical literature, underscoring his ongoing engagement with clinical questions and neurologic patient safety.

Gretchen A. Batterman, PsyD, is a Wisconsin-licensed clinical neuropsychologist with more than 25 years in the field of psychology, including over a decade focused specifically on neuropsychology. She specializes in comprehensive neuropsychological assessment for adult clinical and medical populations, with additional experience in aviation-related (FAA) and forensic evaluations. Dr. Batterman earned her doctoral degree in psychology from the Wisconsin School of Professional Psychology, an APA-accredited program, and completed her undergraduate and master’s training at Cardinal Stritch University. She completed a clinical internship with San Bernardino County in California and went on to postdoctoral neuropsychology training in Wisconsin under the supervision of Dr. Nathan Glassman and Dr. Patricia Stanik, with an emphasis on traumatic brain injury, dementia, and forensic and aviation-focused evaluations. Her professional background includes work in both inpatient and outpatient settings, VA and military environments, assisted living and memory care, forensics, and private practice. Dr. Batterman maintains active professional affiliations with the American Academy of Clinical Neuropsychology, International Neuropsychological Society, American Psychological Association, and Wisconsin Psychological Association.

Heidi S. Sigmund, PsyD, is a licensed psychologist in Wisconsin and a clinical health psychologist with extensive experience supporting adults and couples. Her clinical work focuses on trauma and PTSD, anxiety, and depression, with additional experience helping patients address coping skills, chronic illness, life transitions, relationship concerns, self-esteem, stress, anger management, and recovery after sexual abuse. Dr. Sigmund’s approach is collaborative and evidence-based, integrating cognitive behavioral therapy (CBT) and trauma-focused treatments such as Cognitive Processing Therapy (CPT) and Prolonged Exposure Therapy. She also incorporates mindfulness-based strategies, solution-focused brief therapy, and strength-based interventions tailored to each patient’s goals and preferences. In addition to clinical care, Dr. Sigmund is involved in education and training, serving as faculty within a psychology internship program and providing clinical supervision to developing clinicians. She has also contributed to veterans’ mental health efforts, including professional involvement with PTSD-focused clinical teams and community suicide prevention initiatives. Dr. Sigmund offers telehealth psychotherapy through a HIPAA-compliant, encrypted platform.

Brian M. Christie, MD, MPH, is a plastic surgeon with advanced expertise in hand surgery and plastic and reconstructive microsurgery. He provides comprehensive care for conditions affecting the hand and upper extremity, applying microsurgical techniques to support functional restoration and reconstruction. Dr. Christie earned his medical degree from Duke University School of Medicine and completed an integrated plastic surgery residency at University of Wisconsin Hospitals and Clinics. He then pursued fellowship training in hand surgery at Stanford Health Care–sponsored Stanford University. In addition to his clinical training, he holds a Master of Public Health from the Harvard School of Public Health, with a focus in Global Surgery. Dr. Christie is board certified by the American Board of Plastic Surgery in Plastic Surgery and in Surgery of the Hand. He also serves as an Assistant Professor of Hand and Plastic Surgery, reflecting a commitment to education and academic medicine. His scholarly work includes publications on topics such as nerve management in amputation care, perioperative practices in hand surgery, and global surgery paradigms and partnerships. He is licensed to practice medicine in Wisconsin, Indiana, and California.

Jason Sansone, MD, is an orthopaedic surgeon specializing in spine surgery and orthopedic traumatology, providing operative and non-operative care for complex fractures. He evaluates and treats a wide range of spine conditions, including neck and back pain, herniated discs, sciatica, spinal stenosis, degenerative disc disease, and spinal fractures. His procedural expertise includes minimally invasive spine surgery as well as cervical and lumbar fusion, microdiscectomy, laminoplasty, and cervical artificial disc replacement. Dr. Sansone earned his medical degree from the University of Wisconsin School of Medicine & Public Health and completed orthopaedic surgery residency training at University of Wisconsin Hospital and Clinics. He pursued advanced fellowship training in orthopedic trauma surgery through the Unite Orthopaedics Foundation. He is board certified by the American Board of Orthopaedic Surgery. In addition to his clinical practice, Dr. Sansone serves as President of Orthopedic & Spine Centers of Wisconsin, SC. He is a Fellow of the American Academy of Orthopaedic Surgeons and a member of the Wisconsin Medical Society. He is committed to evidence-based care, thoughtful surgical decision-making, and helping patients return to function safely.

Mary L. Stoffel, MD, is a gynecology physician providing comprehensive women’s health care in Madison, Wisconsin. She partners with patients across a wide range of gynecologic needs, emphasizing clear communication, education, and individualized care plans that align with each patient’s goals and values. Dr. Stoffel earned her medical degree from Southern Illinois University School of Medicine. She completed both her internship and residency training at Oklahoma Teaching Hospitals, building a strong foundation in the evaluation and management of common and complex gynecologic conditions. She is board certified by the American Board of Obstetrics and Gynecology. In practice, Dr. Stoffel is committed to evidence-based care and supports patients through preventive gynecologic services, routine screenings, and the diagnosis and treatment of gynecologic concerns across adulthood. She works with Madison Womens Health LLP and provides care in English. Patients value Dr. Stoffel’s thoughtful approach and focus on respectful, collaborative decision-making, helping women feel informed and supported throughout their care.