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M. Katayoon Rezaei, MD

GW Provider
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M. Katayoon Rezaei MD M. Katayoon Rezaei MD M. Katayoon Rezaei MD



  • Associate Professor of Pathology | Chief, Cytopathology Service
Medical Biography
Clinical Interests
  • Genitourinary Pathology
  • Cytopathology, including performing and interpretation of FNA
  • Ultrasound-Guided FNA
  • Surgical Pathology
  • Medical School
    • YAZD University of Medical Sciences
  • Residency
    • The George Washington University, Anatomic and Clinical Pathology
  • Fellowship
    • The George Washington University, Cytopathology
Board Certified
  • Pathology
  • Anatomic
  • Clinical Pathology
  • Cytopathology

Katayoon Rezaei, M.D. is an Associate Professor in the Department of Pathology at the George Washington (GW) University and serves as the Chief of Cytopathology Services. She completed her residency in Anatomic and Clinical Pathology at GW, followed by two years of Fellowships in Surgical Pathology and Cytopathology. Dr. Rezaei is Board certified in Anatomic and Clinical Pathology with subspecialty Board certification in Cytopathology. She joined the Faculty of the GW Department of Pathology in 2005, where she provides clinical diagnostic services, and serves as core faculty for the Pathology Residency and Fellowship training programs. In the greater professional community of Pathology, Dr. Rezaei is an advocate for best practices in pathology and laboratory medicine and is actively involved in representing interests of pathologists on Capitol Hill. She is currently serving as the Delegation Chair of the District of Columbia for the College of American Pathologists and a member of the Federal and State Affairs Committee.

Dr. Rezaei’s clinical practice focuses mainly on Urologic pathology and Cytopathology. In addition to the diagnostic services, she is an active member of multidisciplinary urologic oncology team. As the Chief of Cytopathology, Dr. Rezaei provides diagnostic services in GYN and Non-GYN cytology, with emphasis on cytology based molecular assays in cervical cancer screening and bladder cancer. She also accepts patients for performing Fine Needle Aspiration of thyroid, salivary gland, lymph nodes, and other superficial lesions with an additional certification from the College of American Pathologists in performing ultrasound-guided FNA.