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 Marshfield Labs Staff


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​Sales and ​Marketing

Clinical and Anatomic Pathologists

Clinical​ PhD's​​​




Thomas R. Fritsche, MD, PhD

​​Director, Division of Laboratory Medicine

Pam Carter, MT (ASCP), BS, MBA​

​Administrative Director​

Joyce Flanagan, PhD​

​​​Director, Toxicology​




​​Sales and Marketing​

Shelley Van Proosdy, Strategic Sales Executive

Responsible for clinical diagnostic business development and sales

Joey Liebmann, Strategic Sales Executive

Responsible for clinical diagnostic sales


​Clinical and Anatomic Pathologists

Deepa Bassi, MD

​Special Interests:

  • Gynecologic
  • Breast
  • Renal pathology

Efstathio​s Beltaos, MD

Special Interests:

  • Lung
  • Kidney
  • Lymph nodes
  • Breast

Jonathan Cutlan, MD

Special Interests:

  • Melanoma
  • Melanocytic lesions
  • Cutaneous lymphoma

Thomas Fritsche, MD, PhD​

Special Interests:

  • Antimicrobial Resistance andSusceptibility Testing Methodologies
  • Laboratory Detection of Bacteremia and Fungemia
  • Laboratory Standards and Quality Control
  • Medical Microbiology
  • Molecular Diagnostics
  • Parasitology
  • Clinical Pathology
  • Infection Control
  • Tick-borne Diseases

Lei Hao, MD​

Special Interests:

David Seung Lae Kim MD, PhD​

Special Interests:

  • ​​Melanocytic lesions
  • Inflammatory disease
  • Skin neoplasms​

Rafael Medina-Flores MD​

Special Interests:

  • Neuro-oncology
  • HIV dementia
  • Neuromuscular pathology​

Thanhcuong Nguyen, MD​

Special Interests:

  • Surgical pathology
  • Cytopathology​

Kathy Puca, MD​

Special Interests:

  • ​​Transfusion Medicine
  • Coagulation

Jeffrey Resnick, MD

Special Interests:

  • Gastrointestinal/liver pathology
  • Cytopathology
  • Dermatopathology

Syed Sajjad, MD​

Special Interests​:

  • Tumor pathology
  • Electron Microscopy
  • Renal pathology including renal transplant pathology

Lindsay Schmidt MD​

​Special Interests:

  • Pulmonary pathology

Gene Shaw, MD​

Special Interests​:

  • Coagulation
  • Flow Cytometry
  • Hematology and Immunology

Kajal Sitwala, MD, PhD​

Special Interests​:

  • Leukemia/lymphoma
  • Flow cytometry
  • Molecular diagnostics​

Yeping Sun MD, PhD

Special Interests:

  • Diagnostic surgical pathology
  • Hepatic and gastrointestinal pathology
  • Immunohistochemistry

Chris Waldo, MD

​Special Interests:

  • ​Anatomic pathology
  • Outreach pathology​​

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Clinical ​​​PhDs

Sarah Bissonette, PhD

​Special Interests:

  • Maternal fetal medicine
  • Automated chemistry
  • Point of Care testing


Joyce Flanagan, PhD

Special Interests:

  • Toxicology
  • Therapeutic drug monitoring
  • Clinical applications by mass spectrometry
  • Protein electrophoresis
  • Endocrine and autoimmune diseases

​​Thomas Novicki, PhD

Special Interests:

  • Tick-borne diseases
  • Diagnosis of TB

Timothy Uphoff, PhD​

Special Interests:

  • Molecular Diagnostics
  • Infectious Diseases
  • Genetics
  • Oncology


 Contact Sales & Marketing

​​Call Us 715-221-6278