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Mark D. Ewalt, MD

Assistant Professor

  • ​7/2014-6/2015 | Fellow, Molecular Genetic Pathology, Department of Pathology; Stanford Health Care – Stanford, California
  • 7/2013-6/2014 | Fellow, Hematopathology, Department of Pathology; Stanford Health Care – Stanford, California
  • 7/2009-6/2013 |​ Resident, Anatomic/Clinical Pathology; Department of Pathology, New York Presbyterian Hospital – Columbia, New York, New York
  • 8/2005-5/2009 | MD; Columbia University College of Physicians and Surgeons – New York, New York
  • 8/1997-5/2001 | ScB, Biology; Brown University – Providence, Rhode Island
Academic Appointments:​​​
  • 8/2017 – Current | Assistant Professor, University of Colorado School of Medicine
  • 1/2016-7/2017 | Assistant Professor, Cedars-Sinai Medical Center
Professional Society Memberships:
  • American Society of Clinical Pathology (ASCP)
  • American Society of Hematology (ASH)
  • Association for Molecular Pathology (AMP) – Member, Training and Education Committee
  • Society for Hematopathology (SH)
  • ​​California - Unrestricted
  • Colorado - Unrestricted
Board Certification:
  • ​​Anatomic/Clinical Pathology (July 2013)
  • Pathology - Hematology (September 2014)
  • Molecular Genetic Pathology (September 2015)
Review and Referee Work:​​​
  • ​Ad Hoc Reviewer, Human Pathology: Case Reports, 2017
  • ​​​Journal Publications:
        Journal Articles in Pub Med (
  • ​Books and Chapters:
    • Colovai, A, Ewalt M, Hosking, P:  Hematology: White Blood Cells, Lymph Nodes, and Flow Cytometry. In Clinical Pathology Board Review 1st Edition, Spitalnik S, Arinsburg S, Jhang J (editors), Elsevier, Inc. Philadelphia, PA. Chapter 11, 2014.
  • Abstracts/Presentations
    •  Ewalt MD, Kim AS, McClure RF. "DNA Variants in Chronic Myeloid Neoplasms (CMNs): A review by the Association for Molecular Pathology CMN Working Group." Early Bird Session at AMP Annual Meeting, Nov 2016.

    • Soderquist C, Ewalt MD, Czuchlewski D, Geyer J, Rogers HJ, Babushok D, Hexner E, Orazi A, Hsi ED, Wang A, Bueso-Ramos CE, Arber DA, Bagg A. " Myeloproliferative Neoplasms with Concurrent BCR-ABL1 Translocation and JAK2 V617F Mutation." USCAP Annual Meeting, March 2016.

    • Lal, C.A. Kunder, M.D. Ewalt, I. Schrijver, J. Zehnder, C.J. Suarez. " Potential Pitfalls with TruSeq Amplicon: Cancer Panel Variant Detection." AMP Annual Meeting, Nov 2015.

    • C.J. Suarez, H. Stehr, E. Fung, C.A. Kunder, M.D. Ewalt, A. Lal, A. Alizadeh, M. Diehn, I. Schrijver, J. Zehnder. "The VarScan2’s SNVs-Near-Indel Filter: Is It Necessary?" AMP Annual Meeting, Nov 2015.
    • Ewalt MD, Klass M, Panganiban J, Huang Y, Stenzel T, Hutt K, Ma L, Arber DA, Merker JD, Schrijver I, Zehnder JL. “Next-Generation Sequencing for Detection of Clonal TRG Gene Rearrangements Shows Improved Specificity and Positive Predictive Value Compared to Fragment Analysis Using BIOMED-2 Primers and Capillary Electrophoresis” AMP Annual Meeting, Nov 2015.
    • Ewalt MD, Gotlib JR, Arber DA, Merker JD. “Myeloproliferative Neoplasm with complex JAK2 rearrangement.” European Bone Marrow Working Group (EBMWG) 12th International Workshop on Bone Marrow Pathology, April 2015.
    • Ewalt MD, Gratzinger D. “Classical Endothelial Markers Fail to Highlight Bone Marrow Sinusoids in the Marrow of Healthy Patients and Patients with Myelodysplastic Syndromes.” ASH Annual Meeting, Dec 2014.
    • Ewalt M, Gojenola L, Zehnder JL, Schrijver I. “Standardization of BCR-ABL1 Quantitation: Successes and Challenges, the Stanford Experience.” AMP Annual Meeting, Nov 2014.
    • Ewalt M, Natkunam Y, Zehnder JL. “An Unusual Case of Classical Hodgkin Lymphoma Expressing Multiple T-Cell Antigens: Contributions of Molecular Studies to Diagnosis in Hematopathology.” AMP Annual Meeting, Nov 2014.
    • M. Ewalt, R. Metcalf, M. Castellanos, S. Zhao, Y. Natkunam, S. Luna-Feinman. “Classical Hodgkin Lymphoma in Guatemalan Children of Age Less than Six Show High Prevalence of EBV, HGAL and CD137: Prognostic and Therapeutic Implications.” Childhood, Adolescent, and Young Adult Hodgkin Lymphoma (CAYAHL), 2nd International Symposium, May 2014.
    • Galili N, Trifonov V, Ewalt M, Mukherjee S, Rabadan R, Raza A. “Identification of Dido1 Mutation Associated with Familial Myelodysplastic Syndrome (MDS)/Acute Myeloid Leukemia (AML).” Blood (ASH Annual Meeting Abstracts), Nov 2012; 120: 169.
    • Ewalt M, Nandula S, Phillips AA, Murty V, Mansukhani M, Bhagat G. “BRAF V600E Mutation Appears Specific for Hairy Cell Leukemia Among Low and Intermediate Grade B-Cell Lymphomas: Utility of a Real Time PCR Based Approach for Detection.” Blood (ASH Annual Meeting Abstracts), Nov 2011; 118: 2635.​​