Alexander Kratz, MD

Board Certifications: 
Blood Banking/Transfusion Medicine, Pathology - Clinical
Accepting New Patients
Profile Headshot


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

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.


Hospital Affiliations

  • NewYork-Presbyterian/Columbia


  • German


  • Male

Insurance Accepted


  • EPO
  • HMO
  • Medicare Managed Care
  • NY Signature
  • POS
  • PPO
  • Signature Administrators
  • Student Health


  • EPO
  • Great West
  • HMO
  • POS
  • PPO


  • HMO
  • Medicare Managed Care
  • PPO


  • ConnectiCare
  • EPO
  • Essential Plan
  • HMO
  • Medicaid Managed Care
  • Medicare Managed Care
  • POS
  • PPO
  • Select Care (Exchange)
  • Vytra

Empire Blue Cross Blue Shield

  • Blue Priority
  • EPO
  • HMO
  • Medicare (Mediblue)
  • NYP Employee Plan
  • Pathway (Exchange)
  • POS
  • PPO

Local 1199

  • Local 1199


  • MagnaCare


  • Multiplan

Oxford Health Plans

  • Freedom
  • Liberty
  • Medicare Managed Care




  • Columbia University Employee Plan
  • Compass (Exchange)
  • EPO
  • Essential Plan
  • HMO
  • Medicaid (Community Plan)
  • Medicare Managed Care
  • POS
  • PPO

*Please contact the provider’s office directly to verify that your particular insurance is accepted.

Credentials & Experience

Education & Training

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

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.