Frozen Section Expert Witnesses

Rochester, New York

Pathology - Gastrointestinal, GI, Liver, Pancreas, Biliary, Frozen section, colon, stomach, intestine, bowel, biopsy, IBD, inflammatory bowel disease, rectum, anus, dysplasia, hepatitis, pancreas, colitis

Associate Director of Surgical Pathology (2025-present) and Director of Gastrointestinal Pathology (2021-present) at the University of Rochester Medical Center. Fellowship trained and clinically active in Gastrointestinal, Liver, and Pancreas pathology, and also clinically practice frozen section diagnosis and cardiac pathology. I have published peer-reviewed articles on a variety of topics in gastrointestinal and liver pathology including pancreatic adenocarcinoma, liver biopsy diagnosis, esophagitis, and colitis. I also have presented and moderated educational and research sessions on GI, liver, and general surgical pathology at national conferences including the United States and Canadian Academy of Pathology (USCAP) Annual Meeting and American Society for Clinical Pathology (ASCP).

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...