J. Chadwick King, MD


Medical school: University of Virginia, Charlottesville, VA
Residency: Anatomic and Clinical Pathology, University of Arkansas, Little Rock, AR
Certifications: Anatomic Pathology and Clinical Pathology
Clinical focus: Hematopathology, Flow Cytometry and Coagulation


Thomas M. Soike, MD

Medical School: East Tennessee State University, Johnson City, TN

Residency: Anatomic and Clinical Pathology, Medical University of South Carolina, Charleston, SC

Fellowship: Dermatopathology, Medical University of South Carolina, Charleston, SC

Certifications: Anatomic Pathology, Clinical Pathology, Dermatopathology
Clinical Focus: Melanocytic Lesions, Inflammatory Dermatoses, Laboratory Automation

Thomas A. Barklow, MD


Medical school: Ross University School of Medicine, Portsmouth, Dominica
Residency: Anatomic and Clinical Pathology, East Tennessee State University, Johnson City, TN
Fellowship: Surgical Pathology, East Tennessee State University, Johnson City, TN
Certifications:  Anatomic Pathology and Clinical Pathology
Clinical focus: Surgical Pathology, Breast Pathology

David A. Sibley, MD

Medical school: University of Virginia, Charlottesville, VA
Residency: Anatomic and Clinical Pathology, University of Virginia Hospital, Charlottesville, VA
Fellowship: Blood Banking and Transfusion Medicine, University of Virginia Hospital, Charlottesville, VA
Certifications: Anatomic Pathology and Clinical Pathology
Clinical focus: Blood Banking and Transfusion Medicine, Hematopathology

Yurong Wheeler, MD, PhD

Medical School: Tianjin Medical University, Tianjin, China

Graduate School: Wake Forest University School of Medicine, Winston-Salem, NC 

Residency: Anatomic and Clinical Pathology, University of Missouri, Columbia, MO

Fellowship: Cytopathology, The Johns Hopkins Hospital, Baltimore, MD

Certifications: Anatomic Pathology, Clinical Pathology, Cytopathology
Clinical Focus: Fine Needle Aspirations, Skin Tumors, Molecular Pathology, Transfusion Medicine

Emily R. Patterson, MD

Medical school: University of Pennsylvania, Philadelphia, PA
Residency: Anatomic and Clinical Pathology, Mayo Clinic, Rochester, MN
Fellowship: Surgical Pathology, Mayo Clinic, Rochester, MN
Certifications: Anatomic Pathology and Clinical Pathology
Clinical focus: Surgical Pathology, Hematopathology, Transfusion Medicine

​Meet our Pathologists

Patrick N. Costello, MD

Medical school: University College of Dublin, Ireland
Residency: Anatomic and Clinical Pathology, Montefiore Medical Center, Bronx, NY
Fellowship: Surgical Pathology, Mayo Clinic, Rochester, MN
Certifications: Anatomic Pathology and Clinical Pathology
Clinical focus: Gastrointestinal and Liver Pathology, Hematopathology

Robert L. Schmadeka, MD

Medical school: American University of Caribbean, Sint Maarten
Residency: Anatomic and Clinical Pathology, University of Tennessee Health Science Center, Memphis, TN
Fellowship: Surgical and Breast Pathology, Stony Brook University, NY
Certifications: Anatomic Pathology and Clinical Pathology
Clinical focus: Surgical Pathology,  Breast Pathology

Watauga Pathology Associates
​1725 W. Market Street

Johnson City, TN  37604

​(423) 431-1386

Elizabeth M. Arze, MD

Medical school: American University of Antiqua, Antigua
Residency: Anatomic and Clinical Pathology, East Tennessee State University, Johnson City, TN
Fellowships: Surgical Pathology and Cytopathology, University of Arkansas, Little Rock, AR
Certifications:  Anatomic Pathology, Clinical Pathology, Cytopathology
Clinical focus: Cytopathology, Surgical Pathology

Elena Gertsen, MD, PhD


Medical school: Universitaetsklinikum Essen, Germany 
Residency: Anatomical and Clinical Pathology, East Tennessee State University, Johnson City, TN
Fellowship: Surgical Pathology, Mayo Clinic, Rochester, MN
Certifications: Anatomic Pathology and Clinical Pathology
Clinical focus: Surgical Pathology, Gynecologic Pathology, Resident Education 

Julie Smith Robertson, MD

Medical school: University of Louisville, Louisville, KY
Residency: Anatomic Pathology, East Tennessee State University, Johnson City, TN
Certifications: Anatomic Pathology
Clinical focus: Surgical Pathology, Breast Pathology, Resident Education