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Paul N. Staats, MD

Academic Title:


Primary Appointment:


Administrative Title:

Assistant Director, Anatomic Pathology Laboratory Operations; Interim Chair for the Department of Pathology

Additional Title:

Director, Cytopathology 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 interests 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.

Research/Clinical Keywords

Cytopathology; Gynecologic Pathology; Breast Pathology

Highlighted Publications

Staats PN, Davey DD, Witt BL, Ghofrani M, Zhao C, Dodd LG, Goodrich K, Husain M, Kurtycz DFI, Russell DK, Shen RZ, Souers RJ, Tabatabai ZL, Crothers BA. Performance of specific morphologic features in distinguishing low-grade squamous intraepithelial lesions from high-grade squamous intraepithelial lesions in borderline cases: a College of American Pathologists Cytopathology Committee multiobserver study. J Am Soc Cytopathol. 2022 Mar-Apr;11(2):102-113doi: 10.1016/j.jasc.2021.11.001. Epub 2021 Nov 10. PubMed PMID: 34903496.
Staats PN, Parkash V, Otis CN, Sharma P, Ioffe O, Bracamonte ER. The Current State of Communication of Urgent and Significant, Unexpected Diagnoses in Anatomic Pathology. Arch Pathol Lab Med. 2020 Sep 1;144(9):1067-1074doi: 10.5858/arpa.2019-0436-OA. PubMed PMID: 32023089.
Staats PN, Souers RJ, Nunez AL, Li Z, Kurtycz DFI, Goodrich K, Witt BL, Davey DD, Booth CN. The Differential Diagnosis of Reparative Changes and Malignancy: Performance in the College of American Pathologists Pap Education and Proficiency Testing Programs. Arch Pathol Lab Med. 2020 Jul 1;144(7):846-852doi: 10.5858/arpa.2019-0298-CP. PubMed PMID: 31755780.
Chain K, Legesse T, Heath JE, Staats PN. Digital image-assisted quantitative nuclear analysis improves diagnostic accuracy of thyroid fine-needle aspiration cytology. Cancer Cytopathol. 2019 Aug;127(8):501-513doi: 10.1002/cncy.22120. Epub 2019 May 31. PubMed PMID: 31150162.
Legesse T, Parker L, Heath J, Staats PN. Distinguishing non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) from classic and invasive follicular-variant papillary thyroid carcinomas based on cytologic features. J Am Soc Cytopathol2019 Jan - Feb;8(1):11-17doi: 10.1016/j.jasc.2018.07.004. Epub 2018 Jul 24. PubMed PMID: 30929754.

Additional Publication Citations

A complete list of published work is available at My Bibliography: