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Paul N. Staats, MD

Academic Title:


Primary Appointment:


Administrative Title:

Assistant Director, Anatomic Pathology Laboratory Operations

Additional Title:

Director, Cytopathology Service; Co-Director, UMGCC Pathology Biorepository Shared Service



Phone (Primary):


Phone (Secondary):




Education and Training

  • B.S., Chemistry, Yale University, New Haven, CT, 1994-1998             
  • M.D., SUNY Upstate Medical University, Syracuse, NY, 1998-2003        
  • Post-Sophomore Fellow, Anatomic and Clinical Pathology, SUNY Upstate Medical University, Syracuse, NY, 2000-2001    
  • Resident, Anatomic and Clinical Pathology, Massachusetts General Hospital, Boston, MA, 2003-2007 
    • Chief Resident, Clinical Pathology, 2005-2006
    • Chief Resident, Anatomic Pathology, 2006-2007
  • Robert E. Scully Fellow in Gynecologic and Obstetric Pathology and Clinical Fellow in Cytopathology, Massachusetts General Hospital, Boston, MA, 2007-2009


Dr. Staats practices anatomic pathology at University of Maryland Medical Center, with a focus on cytopathology and gynecologic and breast pathology. He has been at the University of Maryland Medical Center since 2009. His research interest focus primarily on improving the diagnostic practice of pathology, particularly in cytopathology and gynecologic pathology, through refinement of morphologic criteria and use of ancillary testing.

The primary focus of Dr. Staats's research is on improving the precision of pathologic diagnoses of cancer on cytology specimens and in the gynecologic tract. His focus is on refining the morphologic criteria used for categorization of malignancy, advancing ancillary testing patterns, and improving laboratory quality and efficiency practices.

Dr. Staats is a member if the Hormone Responsive Cancers Program within the University of Maryland Marlene and Stewart Greenebaum Cancer Center Program in Oncology. As such, he collaborates with both clinical and basic research investigators to develop innovative approaches to diagnosis, treatment, and prevention of breast cancer, gynecologic cancers, and prostate cancer.

As co-director of the University of Maryland Marlene and Stewart Greenebaum Cancer Center Pathology and Biorepository Shared Service, Dr. Staats provides important consultation and collaboration with clinical and basic researchers studying cancer in human tissue specimens.

Research/Clinical Keywords

Cytopathology; Gynecologic Pathology; Breast Pathology

Highlighted Publications

Heath JE, Goicochea LB, Staats PN. Biliary Stent Related Alterations Can Be Distinguished From Adenocarcinoma On Bile Duct Brushings Using A Limited Number Of Cytologic Features. Journal of the American Society of Cytopathology. 2015 Sep;4(5):282-9.

Bhatnagar R, Drachenberg CB, Staats PN. Renal Tubular Epithelial Clusters in Voided Urine: A Potential Diagnostic Pitfall in Renal Transplant Patients. Journal of the American Society of Cytopathology 2014;3:96-102.

Staats PN, Clement PB, McCluggage WG, Young RH. Primary Intestinal-Type Glandular Lesions of the Vagina: Clinical, Pathologic, and Immunohistochemical Features of 14 Cases Ranging from Benign Polyp to Adenoma to Adenocarcinoma. American Journal of Surgical Pathology 2014;38:593-603.

Fung A, Collins J, Campassi C, Ioffe OB, Staats PN. Performance characteristics of ultrasound-guided fine needle aspiration of axillary lymph nodes for metastatic breast cancer employing rapid on-site evaluation of adequacy: analysis of 136 cases and review of the literature. Cancer Cytopathology 2014;122:282-91.

Additional Publication Citations