Consultants

Sylvia Asa, MD, PhD

Sylvia Asa, MD, PhD

Consultant Pathologist

Dr. Asa is the Professor of Pathology at Case Western Reserve University and a former Endocrine Pathologist and Professor in the Department of Laboratory Medicine and Pathobiology at the University of Toronto. A Clinician-Scientist with a focus on Endocrine Pathology, her research aims to identify the basis for development of endocrine tumors, to improve diagnostic tests and to identify targets for therapy of those diseases. Dr. Asa has published over 450 scientific articles, written five books, co-edited five books and contributed more than 100 book chapters on endocrine pathology. She serves on numerous editorial boards of scientific journals and has given over 275 invited lectures.

NextGen Consultants
Jason Hornick, MD, PhD

Jason Hornick, MD, PhD

Consultant

Dr. Hornick received a BA from Amherst College and an MD/PhD from the University of Southern California. He trained as a resident in Anatomic Pathology and pursued subspecialty fellowships in soft tissue pathology and gastrointestinal pathology at Brigham and Women’s Hospital, where he is the Director of Surgical Pathology and Immunohistochemistry and Chief of Soft Tissue and Bone Pathology. Dr. Hornick is a Professor of Pathology at Harvard Medical School and a consultant at the Dana-Farber Cancer Institute.

Dr. Hornick is currently the Vice President of the USCAP; he previously chaired the USCAP Education Committee and the USCAP Abstract Review Board and Assignment Committee. Dr. Hornick is also President of the Arthur Purdy Stout Society of Surgical Pathologists. He previously chaired the CAP Immunohistochemistry Committee and served on the Anatomic Pathology Test Development and Advisory Committee for the American Board of Pathology.

Dr. Hornick is the Editor-in-Chief of the 5th series of the AFIP Atlases of Tumor and Non-tumor Pathology. He serves on 14 editorial boards, including the American Journal of Surgical Pathology and Modern Pathology. He is an Associate Editor for Sternberg’s Diagnostic Surgical Pathology, a Regional Editor for Histopathology, an Associate Editor for Advances in Anatomic Pathology and Virchows Archives, and the Consulting Editor for Surgical Pathology Clinics.

Dr. Hornick was a member of the expert editorial boards for the 4th and 5th editions of the WHO Classification of Tumors of Soft Tissue and Bone. He was Chair of the International Collaboration on Cancer Reporting (ICCR) Dataset for Gastrointestinal Stromal Tumors and a member of the Soft Tissue Sarcoma Expert Panel for the AJCC and the Sarcoma Analysis Working Group for The Cancer Genome Atlas (TCGA).

Dr. Hornick has published over 500 original papers, review articles, and book chapters and edits the textbook Practical Soft Tissue Pathology: A Diagnostic Approach, which is in its 2nd edition. He received the 2012 Arthur Purdy Stout Society of Surgical Pathologists Annual Prize, the 2014 Jack Yardley Investigator Award from the Gastrointestinal Pathology Society, and the 2023 Mostofi Distinguished Service Award from the USCAP. Dr. Hornick sings and plays keyboards for a rock band.

NextGen Consultants
Peter Sadow, MD, PhD

Peter Sadow, MD, PhD

Consultant

Dr. Sadow, Director of Head and Neck Pathology, is also a subspecialist in Genitourinary Pathology and a consultant in Endocrine Pathology, a subspecialty with many homes by organ system. He returned to MGH almost two decades after getting his first taste of research at MGH as a summer student while an undergraduate at Johns Hopkins University. Dr. Sadow's first project (and publication) involved the effects of thyroid hormone on tissue remodeling and wound repair. It was a desire to advance our knowledge of human disease that drove Dr. Sadow to pursue a combined MD/PhD program at the University of Chicago rather than pursuing his other academic passion of Egyptian art and archaeology, having studied Egyptology along with biology as an undergraduate. He has maintained his archaeological interests, even as a pathologist at MGH, and he was in Egypt with a Johns Hopkins excavation team during the Arab Spring in January of 2011.

Dr. Sadow's doctoral thesis at the University of Chicago utilized transgenic mouse models with altered thyroid hormone response genes in order to understand and advance our knowledge of the effects of thyroid hormone on human physiology.

This desire to understand the pathophysiology of endocrine dysfunction led Dr. Sadow to pursue clinical training in Anatomic Pathology at Brigham and Women's Hospital, where he was born, followed by subspecialty training in Endocrine, Genitourinary, and Head & Neck Pathology.

His clinical and research interests have continued in endocrine pathology, studying the mechanisms of endocrine carcinogenesis through translational studies involving the proteomics and genomics of endocrine neoplasia, primarily of the thyroid & adrenal glands.

In addition to his clinical & research interests, Dr. Sadow has a prominent teaching role in the hospital, medical school, and in continuing medical education courses.

NextGen Consultants
Knarik Arkun, M.D. FCAP

Knarik Arkun, M.D. FCAP

Consultant Pathologist

Dr. Knarik Arkun is board certified pathologist (Anatomic Pathology/Clinical Pathology and Neuropathology) with a focus on neuropathology, muscle and nerve pathology, cardiac pathology, and autopsy. She is currently associate professor at Tufts University School of Medicine and Medical Director of Autopsy service and Neuropathology at Tufts Medical Center. Dr. Arkun has numerous publications and book chapters.

NextGen Consultants
Andrew Bellizzi, MD

Andrew Bellizzi, MD

Consultant

Andrew M Bellizzi, M.D. is a Clinical Professor in the Department of Pathology at the University of Iowa. Dr. Bellizzi completed undergraduate work in Anthropology and Science Preprofessional Studies at the University of Notre Dame (‘00) and received his medical degree from Northwestern University (‘04).  Following combined training in Anatomic and Clinical Pathology at the University of Virginia (‘08), he completed a fellowship in Gastrointestinal and Liver Pathology at The Ohio State University (‘09). After 2 years as a junior faculty at Brigham and Women’s Hospital, he moved to Iowa in the Fall of 2011.  

Dr. Bellizzi is Director of Immunohistochemistry, GI Pathology, and the GI Pathology Fellowship at the University of Iowa. He is an active member of the United States and Canadian Academy of Pathology, the American Society of Clinical Pathology, and the College of American Pathologists, including serving as immediate past Chair of the USCAP Stowell-Orbison Award and the CAP Immunohistochemistry Committees. He is Secretary-Treasurer of the International Society for Immunohistochemistry and Molecular Morphology and is an Associate (Reviews), Section (Immunohistochemistry), and Assistant Editor (GI pathology) of Applied Immunohistochemistry and Molecular Morphology, Archives of Pathology and Laboratory Medicine, and the American Journal of Clinical Pathology, respectively. Dr. Bellizzi’s research interests include the diagnosis, classification, and etiopathogenesis of human disease, with an emphasis on gastrointestinal, pancreatic, neuroendocrine, and hereditary tumors. His research program focuses on applications of diagnostic immunohistochemistry.

Outside of the office, Andrew enjoys “getting into trouble” with his 14 and 16-year-old boys, Aidan and Darby. In addition to “very special stains,” he also loves hiking, cooking, craft beer, Notre Dame football, the Boston Red Sox, and the Oxford comma. 

NextGen Consultants
Carlos Ricotti, M.D.

Carlos Ricotti, M.D.

Consultant Dermatopathologist

Dr. Carlos A. Ricotti, MD, is board-certified both in dermatology and dermatopathology by the American Boards of Dermatology and Pathology. He completed his residency in dermatology at the University of Miami, followed by a dermatopathology fellowship at University of Texas, Southwestern (UTSW) in Dallas.

NextGen Consultants
Anja C. Roden, M.D.

Anja C. Roden, M.D.

Consultant Pathologist

Dr. Anja C. Roden is Professor of Laboratory Medicine and Pathology and is a board certified Anatomic and Clinical Pathologist with special interest in thoracic and surgical pathology.

Dr. Roden did her medical training at the Humboldt University in Berlin and Technical University in Dresden, Germany. After training in general surgery and working in basic immunology science she completed her anatomic and clinical pathology residency, surgical pathology fellowship, and pulmonary Mayo Clinic scholarship at Mayo Clinic Rochester, US. Subsequently, she joined the staff of the Department of Laboratory Medicine and Pathology at Mayo Clinic Rochester, MN, USA contributing to thoracic pathology, surgical pathology, and autopsy. Dr. Roden also serves as the Medical Director of the Immunostains Laboratory and as the Pulmonary Pathology Fellowship Director of Mayo Clinic Rochester.

​Dr. Roden focuses her research on mediastinal neoplasms, malignant mesotheliomas, biomarkers, interstitial lung diseases, and pulmonary transplant pathology. She published her work in over 140 peer-reviewed manuscript, wrote more than 30 book chapters on mediastinal, pulmonary and mesothelial neoplasms and non-neoplastic lung disease, was involved in the 2021 WHO of thoracic tumors, and was the co-editor of the books “Mediastinal Lesions. Diagnostic Pearls for Interpretation of Small Biopsies and Cytology” and “Pulmonary Pathology. An Atlas and Text”. She also has been an invited speaker on these topics in national and international meetings and congresses. Following her interests she chairs the thymic carcinoma and mediastinal working groups of the International Thymic Malignancy Interest Group, is active in the International Society of the Study of Lung Cancer and Pulmonary Pathology Society and is a member of an International Mesothelioma Panel and an International Virtual Thymoma Panel, and the Immunohistochemistry Committee of the College of American Pathologists. For her work she was the recipient of the President’s Pulmonary Pathology Society Innovation Award in 2017 and the Best Author Award 2020 of Pathology Outlines.

NextGen Consultants
Allen Gown, MD

Allen Gown, MD

Consultant

Dr. Gown has recently retired from a distinguished 40-year pathology career as a pathologist-scientist recognized as one of the world’s leading experts in the diagnostic and research applications of immunohistochemistry. He received his M.D. from the Albert Einstein College of Medicine of Yeshiva University, Bronx, NY in 1975, and then completed his Pathology Residency as well as Pathology Fellowship training at the University of Washington, Seattle, the latter under the aegis of Dr. Earl Benditt. Dr. Gown rose through the ranks to full Professor of Pathology, building an NIH-funded research laboratory, while also serving as an attending pathologist at the University of Washington Medical Center. In the latter context, he developed a diagnostic immunohistochemistry laboratory that also served as a resource for area pathologists. In 1997, he left the University of Washington to found PhenoPath Laboratories, which over 20 years grew to become an internationally renowned diagnostic reference laboratory. Over his career, he has developed numerous clinically important monoclonal antibodies (e.g., HMB-45, 34βE12), and has contributed extensively to the expanding horizons of immunohistochemistry with over 300 peer-reviewed publications. He is currently a member of the editorial boards of several major pathology journals and is involved in several teaching endeavors, including a role as Clinical Professor of Pathology at the University of British
Columbia, Vancouver, BC. Dr. Gown has been married to his wife Carol for over 50 years, having raised 2 sons and now with 3 grandsons. He is also an ardent bicyclist and a student of classical guitar.

NextGen Consultants
David Dabbs, MD

David Dabbs, MD

Consultant

Dr. Dabbs is an academic pathologist and currently a consultant for breast and gynecologic pathology and immunohistology in addition to consulting for Pharma and medical-legal issues in breast pathology.  From 2001-2019, Dr. Dabbs served as Professor and Chief at UPMC Magee-Women's Hospital in Pittsburgh, PA.

Dr. Dabbs has published more than 250 peer reviewed papers and 9 textbooks.

NextGen Consultants
Mark Jammel, MT

Mark Jammel, MT

Technical Consultant - Clinical Pathology

Mark Jammel is a professional Laboratory Manager with over 30 years' experience in a clinical laboratrory setting, 28 of which were spent at Baptist Hospital System in South FL. Mark has extensive knowledge of Laboraroy operations, complex testing and CPA/CLIA regulations. Mark has a BS in Microbiology from the University of Florida and currently holds a MT license in the state of FL.

NextGen Consultants
Murat Gokden, M.D.

Murat Gokden, M.D.

Consultant Pathologist

Dr. Murat Gokden is a neuropathologist and a Professor in the Department of Pathology at UAMS. He has been a member of the Department since 2000. He is a graduate of Dokuz Eylul Medical School, Izmir, Turkey and received his pathology residency and neuropathology fellowship training at Washington University in St. Louis, surgical pathology fellowship at University of Texas MD Anderson Cancer Center, Houston, TX and cytopathology fellowship training at UAMS.

Although he is board certified in anatomic pathology, neuropathology and cytopathology, he currently focuses essentially exclusively on neuropathology. He serves UAMS and Arkansas Children’s Hospital, covering all aspects of neuropathology service, including brain tumors, autopsy neuropathology and neurodegenerative diseases and, muscle and nerve biopsies. He also serves as a consultant to the Arkansas State Crime Laboratory and the John L. McClellan Memorial Veterans Hospital, as well as pathologists throughout the state.

Dr. Gokden is a member of a number of professional societies and is actively involved in the activities of the American Association of Neuropathologists (AANP) and United States and Canadian Academy of Pathology (USCAP). His academic interests span all aspects of neuropathology, but focuses mostly on brain tumors/surgical neuropathology. He has authored and co-authored a number of books, book chapters and peer-reviewed and review articles, and is heavily involved in the education of trainees in the Medical Center, including medical students, as well as residents/fellows of several Departments.

NextGen Consultants
Jim Zhai, MD

Jim Zhai, MD

Consultant Pathologist

Dr. Jim Zhai is not only an excellent diagnostician pathologist; he is also a dedicated educator and innovative investigator. He has been passionate about the pathology profession and community. He is a national leader in pathology advocacy, lab quality solutions, education, emerging technologies, and profession pipeline.

Dr. Zhai did his pathology residency at Mayo Clinic Rochester and an oncologic pathology fellowship at MD Anderson Cancer Center. He is extremely prolific; he published more than 300 peer-reviewed manuscripts and research abstracts; he authored and edited ten major pathology textbooks, covering a broad spectrum of topics in diagnostic pathology “Frozen Section Library: Head and Neck” “Frozen Section Library: Endocrine Organs” as well as quality management. He authored and edited “Grossing, Staging, and Reporting: An Integrated Manual of Modern Surgical Pathology” and “Quality Management in Anatomic Pathology: Strategies for Assessment, Improvement, and Assurance,” two of CAP's major publications. He serves as a section and leading editor in some most cited pathology journals.

Jim is a well-sought-after national and international speaker in Head & Neck and Thyroid Pathology. Jim's research has been focused on translating emerging molecular advances into diagnostic and therapeutic guidance in daily practice by integrating morphology, immunohistochemistry, and liquid biopsy with clinical relevance.

Jim has extensive contributions and leadership records in various pathologists’ societies, including USCAP, CAP, CAPA, ASCP, TDAC ABP, FSP, and HSCP. His leading efforts make a significant positive impact on our profession and fellow pathologists.

NextGen Consultants