Alexander Kratz, MD, PHD

Blood Banking/Transfusion Medicine, Pathology - Clinical
More specialties
Accepting New Patients
Profile Headshot


After graduation from Medical School in Vienna, Austria, I enrolled in an MPH program at Yale's School of Medicine. I stayed for another four years at Yale for a PhD in Immunology; my thesis was entitled “Lymphotoxin transgenic mice: An in vivo system to probe the biologic activity of a cytokine”. After a residency in Clinical Pathology and a fellowship in Blood Banking at MGH, I became Director of the MGH Hematology Laboratory. In 2006, I moved to New York to become the Associate Director and then Director of the CUMC Core Laboatory and Point of Care Service.

My research interests focus laboratory medicine, reference ranges, and the management of clinical laboratories. I have published extensive listings of laboratory reference ranges in the New England Journal of Medicine and Harrison's Textbook of Internal Medicine. Together Dr. Carlo Brugnara from Harvard, I edited a volume on Automated Cell Counters; I am the Treasurer of the International Council for Standardization in Haematology (ICSH) and the Chairman of their Working Group setting new standards for the ESR.


Areas of Expertise / Conditions Treated

  • Blood Bank
  • Clinical Pathology

Academic Appointments

  • Professor of Pathology & Cell Biology at CUMC

Administrative Titles

  • Medical Director, Automated Core Laboratory
  • Medical Director, Point of Care Service

Hospital Affiliations

  • NewYork-Presbyterian / Columbia University Irving Medical Center


  • German


  • Male

Schedule an Appointment

Connect Patient Portal

For existing patients, login to make an appointment, view documentation or contact your care provider.

Connect Sign In

Credentials & Experience

Education & Training

  • University of Vienna School of Medicine (Austria)
  • Residency: Massachusetts General Hospital
  • Fellowship: Massachusetts General Hospital
  • Fellowship: 2000 Massachuesetts General Hospital

Committees, Societies, Councils

At Columbia University Medical Center:

2006 - 2010: Clinical Services Board, Allen Pavilion

2007 - 2008: Six Sigma Project on Pre-discharge Orders

2008 - 2009: Team Leader, Allen Pavilion/H*Works Laboratory ED Committee

2011 - 2015: Bi-campus committee on the Clinical Harmonization of the EHR and Management of Interventions: Solutions, Tools, and Requests (CHEMISTRY)

2013 - 2015: Planning Committee for the Automated Laboratory

2013-present: Bi-Campus Quality and Patient Safety Executive Committee

2016-present: Columbia Doctors Quality Committee

2016-present: Automated Laboratory Committee

2016-present: Bi-campus Laboratory Committee

Professional organizations and societies

1996-2000: Massachusetts Medical Society

1996-2002: College of American Pathologists

1999-2002: American Association of Blood Banks

2001-Present: American Association for Clinical Chemistry

2004-Present: International Society for Laboratory Hematology

2013- 2015: American Society for Hematology

2015-present: International Council for Standardization in Haematology

Board Certifications

  • Blood Banking/Transfusion Medicine
  • Pathology - Clinical

Honors & Awards

1986-1989 Academic Scholarship, Ministry of Education of Austria

1983-1989 Scholarship of the Republic of Austria

1984-1989 Award of the Academic Senate of the University of Austria

1988 F.G. Halpern Scholarship

1989–1991 Scholarship of the Fulbright Commission

1995 Merit Award of the American Society for Investigative Pathology

1998 Laboratory Medicine Conference Speaker of the Year Award

1998 Laboratory Medicine Conference of the Year Award

2000 Travel Award, American Society for Hematology

2006 Pathology Service Recognition Award, Massachusetts General Hospital

2015 Dr. Joseph G. Fink Laboratory Medicine Faculty Teaching Award, Columbia University Medical Center, Department of Pathology and Cell Biology


Selected Publications

Kratz A, Campos-Neto A, Hanson MS, Ruddle NH. Chronic inflammation caused by lymphotoxin is lymphoid neogenesis. J Exp Med. 1996 Apr 1;183(4):1461-72. PubMed PMID: 8666904; PubMed Central PMCID: PMC2192477.

Kratz A, Bengtsson HI, Casey JE, Keefe JM, Beatrice GH, Grzybek DY, Lewandrowski KB, Van Cott EM. Performance evaluation of the CellaVision DM96 system: WBC differentials by automated digital image analysis supported by an artificial neural network. Am J Clin Pathol. 2005 Nov;124(5):770-81. PubMed PMID: 16203273.

Harris N, Jou JM, Devoto G, Lotz J, Pappas J, Wranovics D, Wilkinson M, Fletcher SR, Kratz A. Performance evaluation of the ADVIA 2120 hematology analyzer: an international multicenter clinical trial. Lab Hematol. 2005;11(1):62-70. PubMed PMID: 15790554.

Branda JA, Ferraro MJ, Kratz A. Sensitivity of peripheral blood smear review for the diagnosis of Candida fungemia. Arch Pathol Lab Med. 2007 Jan;131(1):97-101. PubMed PMID: 17227130.

Sireci AN, Herlitz L, Lee K, Bautista JL, Kratz A. Validation and implementation of an algorithm for reporting the automated absolute neutrophil count from selected flagged specimens. Am J Clin Pathol. 2010 Nov;134(5):720-5. doi: 10.1309/AJCP9PEDYQMFGMA3. PubMed PMID: 20959654.