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Department of Pathology Team

While most people won't have reason to meet with their pathologist, their expertise is crucial to providing the most effective care possible. Sibley Hospital offers some of the area's most seasoned pathologists, whose expert interpretation of samples informs diagnosis and staging and drives treatment. The Sibley Department of Pathology offers consultations and second opinions for complex and ambiguous biopsies, including:

  • Breast pathology
  • Challenging tumors
  • Dermatologic neoplasms
  • Gastrointestinal pathology
  • Genitourinary pathology
  • Gynecologic pathology
  • Head and neck tumors
  • Oral and maxillofacial pathology
  • Orthopedic pathology (requires preoperative imaging)
  • Pediatric tumors
  • Pulmonary neoplasms
  • Soft tissue pathology
  • Tumors/neoplasia

The Department of Pathology, led by Dr. Andrea Richardson, also offers preoperative pathology consultations in conjunction with surgery, especially in the following multidisciplinary areas:

Pathology Team Viewing Slides
  • Breast Center
  • Cancer Center
  • Gynecologic oncology
  • Head and neck and oral oncology
  • Melanoma re-excision
  • Sarcoma Center
  • Thoracic oncology
  • Urologic neoplasms


The Sibley Department of Pathology is accredited by:

  • College of American Pathologists
  • American Association for Blood Banks

Phone Numbers

General information: 202-537-4651
Fax: 202-537-4459


Sibley Memorial Hospital
Department of Pathology
5255 Loughboro Road N.W.
Washington, D.C. 20016


Outpatients are registered by the Admissions Department and have orders placed and specimens collected in the Pre-surgical Testing Center.

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