Meet Our Physicians
Stephen Bell, M.D.

Medical School:
Creighton University School of Medicine
Residency:
Stanford University Medical Center
Fellowship:
Stanford University Medical Center / Surgical Pathology
Board Certification:
Anatomic Pathology
Patrick R. Hemmer, M.D.

Medical School:
University of South Dakota School of Medicine
Residency:
Mayo Clinic Medical School
Fellowship:
Mayo Clinic / Surgical Pathology, Gastrointestinal Pathology
Board Certification:
Anatomic & Clinical Pathology
Onsi W. Kamel, M.D.

Medical School:
University of Chicago, Pritzker School of Medicine
Residency:
Stanford University Medical Center
Fellowship:
Stanford University Medical Center / Surgical Pathology, Immunohistochemistry
Board Certification:
Anatomic Pathology
Paul A. Kay, M.D., Ph.D

Medical School:
Mayo Medical School/Graduate School
Residency:
Mayo Clinic Medical School
Fellowship:
Mayo Clinic / Surgical Pathology
Board Certification:
Anatomic & Clinical Pathology
Bruce A. Marshall, M.D.

Medical School:
University of Missouri
Residency:
Ohio State University
Fellowship:
Ohio State University
Board Certification:
Clinical Pathology, Transfusion Medicine; International Board of Clinical & Applied Thrombosis, Hemostasis & Vascular Medicine Diplomate; Certified Tissue Bank Specialist, American Association of Tissue Banks
Lena Scherba, M.D.

Medical School:
Riga Medical School - Latvia
Residency:
University of California San Francisco
Fellowship:
Stanford University Medical Center, University of Southern California / Surgical Pathology & Hematology
Board Certification:
Anatomic & Clinical Pathology, Hematology
Chad J. DeFrain, M.D.

Medical School:
Wayne State University
Residency:
University of California, Irvine
Fellowship:
Memorial Sloan-Kettering Cancer Center
Board Certification:
Anatomic & Clinical Pathology, Cytopathology
Sandra K. Potter, P.A.

Education/Training:
Abion College Duke University Master of Health Sciences Pathologists' Assistant Program
Board Certification:
American Society for Clinical Pathology American Association of Pathologists' Assistant