Neuropathology Expert Witnesses

Phoenix, Arizona

Toxicology, Neuropathology - neurotoxicology, Parkinson's, pesticides, heavy metals, environmental toxicology, neurological disease, neuropathology, drugs of abuse, neurodegeneration, neuroinflammation, toxicology

Dr. Ronald Tjalkens, Ph.D., is a Professor of Neurology and Translational Neuroscience with over 25 years of NIH-funded research experience in Neurotoxicology investigating the molecular and cellular mechanisms of neuroinflammation and its role in the progression of neurodegenerative disorders, including Parkinson’s disease and Alzheimer’s disease. His expertise spans neurotoxicology, neuropharmacology, and the effects of environmental exposures—such as heavy metals, pesticides, neurotropic viruses, and pharmacologic agents—on the nervous system. He has extensive experience using translational models of neurodegeneration, advanced imaging techniques, and AI-based image analysis to evaluate neuroinflammatory injury and identify therapeutic targets in glial cells. Dr. Tjalkens has served as an expert witness in both civil and criminal cases involving neurotoxic injury, providing testimony on causation and mechanisms of neurological damage, and brings an internationally recognized reco...

Jackson, Tennessee

Pathology, Anatomic Pathology - surgical pathology, clinical pathology, gastrointestinal pathology, head and neck pathology, hematopathology, fine needle aspiration, thyroid cytology, pap smear, gynecologic pathology, thoracic pathology, neuropathology, fluid cytology, breast pathology, frozen section

Daniel Peterson, MD, is a board certified anatomic and clinical pathologist with subspecialty board certification in cytopathology and has been in practice for >7 years. He practices full time in the community hospital setting and routinely performs microscopic evaluation of a wide range of surgical pathology and cytopathology specimens including but not limited to: gastrointestinal pathology, thoracic pathology, head and neck pathology, gynecologic pathology, genitourinary pathology, dermatopathology, neuropathology, breast pathology, liver pathology, hematopathology and bone marrow pathology, frozen section pathology, thyroid fine needle aspiration, pap smears, fluid cytology, urine cytology, endobronchial fine needle aspiration, salivary gland fine needle aspiration, pancreatic fine needle aspiration, histochemical stain interpretation, and immunohistochemical stain interpretation. He is also responsible for medical directorship duties related to laboratory certification...