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Meet our Leadership

Mark Silberman, MD, FCAP, FASCP
President

Dr. Mark Silberman is the new president of Clinical Pathology Laboratories. Prior to assuming the role of president of the company, he served as the CPL laboratory director for 15 years. Dr. Silberman previously served as vice president at Clinical Pathology Associates in Austin and has been a member of the local medical community since 1999

Board certified in anatomic and clinical pathology with a subspecialty certification in hematopathology.

  • Fellowship in Hematopathology, The Johns Hopkins University School of Medicine
  • Fellowship in Surgical Pathology, The Johns Hopkins University School of Medicine
  • Anatomic and Clinical Pathology Residency, The Johns Hopkins University School of Medicine
  • Internship in Internal Medicine at Pennsylvania Hospital

Christine Burgess, MD, MPH, FCAP, FASCP
Medical Director, Chemistry, Hematopathology, Microbiology, and Molecular

Dr. Christine Burgess will continue as the medical director for our chemistry, hematopathology, microbiology, and molecular pathology departments. She is a native of Austin and has served the medical community locally since 2007. She previously served as the medical director to Austin Regional Clinic laboratories and as a partner at Clinical Pathology Associates in Austin.

Board certified in clinical pathology with a subspecialty certification in hematopathology.

  • Fellowship in Hematopathology, Emory University School of Medicine
  • Fellowship in Clinical Microbiology, Emory University School of Medicine
  • Chief Resident, Clinical Pathology Residency, Emory University School of Medicine

Eric P. Fillman, MD, FCAP, FASCP
Medical Director, Dermatopathology

Dr. Eric Fillman is the medical director of our Dermatopathology team and leads this department for the laboratory. He earned his medical degree from the Uniformed Services University of the Health Sciences in Bethesda, Maryland. He previously served as an employee of Clinical Pathology Associates in San Antonio, while also serving as the laboratory medical director for Guadalupe Regional Medical Center.

Dr. Fillman is a retired US Army Lieutenant Colonel who spent over 23 years on active duty as a dermatopathologist in the US Army Medical Corps. Notably, he served as the chief of dermatopathology, at San Antonio Military Medical Center and as the lead pathologist for the entire Iraqi Theater of Operations while deployed to Iraq in 2005. He was twice awarded the Meritorious Service Medal and the Iraqi Campaign Medal. 

Board certified in dermatopathology, anatomic and clinical pathology.

  • He completed his dermatopathology fellowship at the University of Colorado Health Sciences Center in Aurora, Colorado.
  • He completed his residency in pathology from the Brooke Army Medical Center in San Antonio, Texas.

Kimberly Monnin, MD, MS, FCAP, FASCP
Medical Director, Hematology and Flow Cytometry

Dr. Kimberly Monnin will continue as the medical director for our hematology and flow cytometry pathology departments. She is a native of Austin and has served the local medical community since 2012. She previously was a partner at Clinical Pathology Associates in Austin. Prior to that, she served as the laboratory medical director for Sutter Memorial Hospital in California.

Board certified in anatomic and clinical pathology with a subspecialty certification in hematopathology.

  • Fellowship in Hematopathology, University of New Mexico Health Sciences Center
  • Fellowship in Surgical Pathology, University of Iowa Hospitals and Clinics
  • Residency in Anatomic and Clinical Pathology, University of Utah Health Science Center

Shannon Kratzer, MD, FCAP, FASCP
Medical Director, Women’s Health and Cytology

Dr. Shannon Kratzer will continue as the medical director for our women’s health and cytology departments, leading initiatives with a strong focus on breast pathology and gynecologic cytopathology with expertise in gynecological disorders. He was a partner and previously served as vice president of Clinical Pathology Associates in Austin. He has been a member of the Austin medical community since 1998.

Board certified in anatomic and clinical pathology with a subspecialty certification in cytopathology.

  • Fellowship in Cytopathology, Indiana University School of Medicine
  • Residency in Anatomic and Clinical Pathology, Indiana University School of Medicine Medical Center

Pathology Team

Joseph Willman, MD, MPH, FCAP, FASCP
Pathologist

Dr. Joseph Willman specializes in dermatopathology and has over 19 years of experience at Clinical Pathology Laboratories. He has been a member of the Austin medical community since 2003. He previously served as the laboratory director of Sonic Reference Laboratories in Austin and is a former partner at Clinical Pathology Associates.

Board certified in anatomic and clinical pathology with a subspecialty certification in dermatopathology.

  • Fellowship in Molecular Genetic Pathology, University of Michigan Medical School
  • Fellowship in Dermatopathology, University of Colorado School of Medicine        
  • Residency in Anatomic and Clinical Pathology, University of Utah Health Science Center

Vivian Hathuc, DO, FCAP, FASCP
Pathologist

Dr. Vivian Hathuc will focus in hematopathology and anatomic and clinical pathology. She previously served as an assistant professor of pathology and associate residency program director at St. Louis University School of Medicine in Missouri. She has experience with, and is published in, cutaneous lymphoproliferative disorders.

Board certified in anatomic and clinical pathology with a subspecialty certification in hematopathology.

  • Fellowship in Surgical Pathology, University of Michigan Medical School

  • Fellowship in Hematopathology, University of Michigan Medical School      

  • Co-Chief, Residency in Anatomic and Clinical Pathology, Wake Forest University School of Medicine

Zhenjian Cai, MD, PhD, FCAP, FASCP
Pathologist

Dr. Zhenjian Cai will specialize in anatomic and clinical pathology with a focus in gastrointestinal and liver pathology. He previously served as medical director of anatomic pathology and rotation director of surgical pathology at the McGovern Medical School at UT Health Houston.

Board certified in anatomic and clinical pathology.

  • Fellowship in Gastrointestinal Pathology, Mt. Sinai Hospital, Icahn School of Medicine

  • Residency in Anatomic and Clinical Pathology, School of Medicine Case Western Reserve University   

  • PhD in Biochemistry, Cellular and Molecular Biology, Weill Medical College of Cornell University

  • Post-Doctoral Research Fellow, NYU Langone Medical Center

Hong Jiang, MD, MS, FCAP, FASCP
Pathologist

Dr. Hong Jiang will specialize in dermatopathology and surgical pathology. She previously served as a pathologist and dermatopathologist at the Dahl-Chase Cancer Center in Maine.

Board certified in anatomic pathology and dermatopathology.

  • Fellowship in Surgical Pathology, Mayo Clinic Rochester

  • Fellowship in Dermatopathology, University of Virginia School of Medicine

  • Residency in Anatomic Pathology, Children’s National Institutes of Health, Bethesda

Jeanette Ruiz, MD, FCAP, FASCP
Pathologist

Dr. Jeanette Ruiz has recently joined Clinical Pathology Laboratories and will focus in Women’s Health, anatomic and clinical pathology, and cytopathology.  Prior to joining CPL, she was a Pathologist at Clinical Pathology Associates and Medical Director of AdventHealth Central Texas.  She previously served as a Pathologist and Clinical Instructor at Zuckerberg San Francisco General Hospital, UCSF Department of Pathology.

Board certified in cytopathology and anatomic and clinical pathology. 

  • Fellowship in Cytopathology , University of California San Francisco
  • Fellowship in Surgical Pathology, University of California San Francisco
  • Residency in Pathology, University of California San Francisco

Hui Zhu, MD, PhD, FCAP
Pathologist

Dr. Hui Zhu will focus on cytopathology as well as anatomic and clinical pathology.  She will provide leadership to CPL’s Women’s Health initiatives. She previously served as a staff pathologist at HCA North Cypress Medical Center in the Houston area. Prior to that role, she served as associate professor of pathology at University of Texas Medical School at Houston and assistant professor at University at Buffalo School of Medicine.

Board certified in cytopathology and anatomic and clinical pathology.

  • Fellowship in Cytopathology, Cleveland Clinic

  • Residency in Anatomic and Clinical Pathology, Cleveland Clinic

  • PhD in Biochemistry and Molecular Biology, Weill Medical College of Cornell University

Stell Patadji Santiago, MD, FCAP, FASCP
Pathologist

Dr. Santiago will focus in cytopathology, anatomic pathology, and surgical pathology. Prior to joining CPL, she was an Assistant Professor of Pathology and Cytopathology Fellowship Director at the Department of Pathology, Anatomy and Laboratory Medicine (PALM) at the West Virginia University School of Medicine.

Board certified in cytopathology and anatomic and clinical pathology.

  • Fellowship in Cytopathology, University of Pittsburgh Medical Center

  • Fellowship in Surgical Pathology, University of Pittsburgh Medical Center

  • Residency in Pathology, University of Pittsburgh Medical Center

Dana Claire Gingell, MD, FCAP
Pathologist

Clinical Pathology Laboratories, Inc., a Sonic Healthcare laboratory, is proud to announce that Dana Claire Gingell, M.D., has joined our medical team as a board-certified pathologist in anatomic and clinical pathology with fellowship training in cytology, breast, and gynecologic pathology. Dr. Gingell has been serving the medical community since 2010, starting her medical journey at Pan Pacific Pathologists, LLC, Honolulu, HI as an anatomic and clinical pathologist and cytopathologist. Dr. Gingell’s most recent experience serving the medical community was during her role as an anatomic and clinical pathologist and cytopathologist at Diagnostic Pathology Services, Inc., Nampa, ID.

Board certified in anatomic and clinical pathology with a subspecialty certification in cytopathology.

  • Fellowship in Breast and Gynecologic Pathology, University of Pittsburgh Medical Center

  • Fellowship in Cytopathology, Stanford University School of Medicine

  • Residency in Anatomic and Clinical Pathology, Rush University Medical Center