University of Colorado Dermatopathology Consultants


Whitney A. High, M.D., J.D., MEng

Professor of Dermatology and Pathology, Laboratory Director

Whitney A. High, MD, JD, MEng, a native of Colorado, is the director of the laboratory and is board-certified in Dermatology and Dermatopathology. He also has certification in Tropical Medicine & Hygiene. After practicing as a chemical engineer in industry, Dr. High returned to medical school to receive his medical degree from the Mayo Clinic School of Medicine in 2000. Dr. High completed his dermatology residency training at University of Texas Southwestern Medical Center in 2004, serving as Chief Resident, and his dermatopathology fellowship at the University of Colorado in Denver in 2005. He has also studied tropical medicine in Central and South America.

Dr. High is appointed to the Departments of Dermatology & Pathology at the University of Colorado. He is also the Vice Chairman of Clinical Affairs in the Department of Dermatology. Dr. High also holds a law degree from the University of Denver.

Dr. High's current research interests include:

  • Pigmented lesions and various forms of skin cancer
  • Complex medical dermatology
  • Infectious disease/sexually transmitted disease
  • Pharmacological and toxicological dermatology/dermatopathology
  • Advanced biochemical testing applied to dermatology/dermatopathology

Lori Prok, M.D.

Assistant Professor of Dermatology and Pathology, Vice Laboratory Director

Lori D. Prok, M.D. is the vice director of the laboratory and is board certified in Dermatology and Dermatopathology. She received both her undergraduate and medical degrees from the University of Colorado, and completed her Pediatric and Dermatology residencies at the University of Colorado Health Sciences Center. Dr. Prok received her Dermatopathology fellowship training under the direction of Dr. James Fitzpatrick and Dr. Loren Golitz.

Dr. Prok has a unique interest in Pediatric Dermatopathology, and is the Pediatric Dermatopathologist for Children's Hospital Colorado. She has served as an Executive Board Member for the Colorado Dermatologic Society, and is an active committee member in the Society for Pediatric Dermatology. She has published numerous articles in peer-reviewed journals, and is an author for UpToDate, other online manuscripts, and twelve textbooks on Dermatology, Pediatrics, and Pathology. She is active in presenting at national and international medical conferences, particularly on the topics of Pediatric Dermatopathology and clinical-pathologic correlation. Dr. Prok enjoys teaching, and was awarded Outstanding Clinical Instructor by the University of Colorado School of Medicine, and the Golden Stethoscope Award for medical student mentorship. She has been named a "5280 Top Doc" in Denver every year since 2011. She maintains a clinical practice in Pediatric Dermatology at Children's Hospital Colorado.


Robert Greer, D.D.S., Sc.D.

Professor of Pathology, Dermatology and Medicine

Robert Greer, D.D.S., Sc.D. is a board-certified Oral & Maxillofacial Pathologist and Director of Western States Regional Oral and Maxillofacial Pathology Laboratory. He received his dental degree from Howard University in 1969, completed Pathology and Oral & Maxillofacial Pathology residencies at Boston University and received a Doctorate of Science degree in Pathology from Boston University in 1974.

In addition to being a member of the Department of Dermatology at the University of Colorado Denver Health Sciences Center, Dr. Greer chairs the Division of Oral & Maxillofacial Pathology at the University of Colorado School of Dental Medicine.

Dr. Greer is the author of 150 scientific articles, three pathology textbooks and numerous chapters in pathology texts. Current research interests include investigation into:

  • The role of HPV in oral mucosal neoplasia
  • Molecular diagnostic techniques for oral cancer
  • The molecular mechanisms involved in fibro-osseous diseases of the jaws
  • Surrogate HPV associated cancer markers in oral smokeless tobacco keratoses