Riten Kumar, MD :: Nationwide Children's Hospital, Columbus, Ohio

Contact Information

Hematology & Oncology
700 Children's Dr
Columbus, OH 43205 [ map ]
PH: (614) 722-3550
FX: (614) 722-3369

Location Information for Patients

Main Campus


Riten Kumar, MD, MSc is the Associate Director for the Pediatric Hemostasis and Thrombosis Fellowship and a Physician in the Hematology/Oncology and BMT Clinic at Nationwide Children’s. Dr. Kumar received his medical degree from Calcutta Medical College in India. He completed his pediatric residency at State University of New York. He finished his pediatric hematology-oncology fellowship at the Mayo Clinic in Minnesota while also receiving his Masters in Clinical and Translational Science from the Mayo School of Graduate Medical Education. In 2013, he completed a second fellowship in Pediatric Thrombosis and Hemostasis at the Hospital for Sick Children, University of Toronto in Canada. Dr. Kumar was recently named recipient of the Young Researcher Award (2014-2015) by the World Federation of Hemophilia and the Eberhard Mammen Young Investigator Award (2014-2015) by Seminars of Thrombosis and Hemostasis. He is also a recipient of the Hemostasis and Thrombosis Research Society, Mentored Research Award (2016-2018).


  • Male

Languages Spoken:

  • English

Education and Training

Graduate School

  • University of Calcutta
    Date Completed: 01/20/2004


  • SUNY Health and Science Center at Brooklyn
    Date Completed: 06/30/2008


  • Mayo Clinic (Rochester)
    Date Completed: 07/01/2011


  • Hospital for Sick Children
    Date Completed: 06/30/2013


  • Pediatrics


  • Hematology & Oncology


  • Pediatric Hematology Oncology
  • Pediatrics

Date of Appointment at Nationwide Children’s Hospital:

  • 09/27/2013


  • Kumar R, Creary S, Varga E, Kahwash S. 2016. Thrombocytopenia Pitfalls: Misdiagnosing Type 2B von Willebrand Disease as Ethylenediaminetetraacetic Acid-Dependent Pseudothrombocytopenia.  Journal of Pediatrics. Vol. 175, no. August: e238.
  • Wang TF, Dawson JE, Forman-Kay JD, Kahr WH, Williams S, Chan AK, Kumar R. Molecular structural analysis of a novel and de-novo mutation in the SERPINC1 gene associated with type 1 antithrombin deficiency.  British Journal of Haematology.
  • Kumar R, Bouskill V, Schneiderman JE, Pluthero FG, Kahr WH, Craik A, Clark D, Whitney K, Zhang C, Rand ML, Carcao M. 2016. Impact of aerobic exercise on haemostatic indices in pediatric patients with haemophilia.  Thrombosis and Haemostasis. Vol. 115, no. February: e6.
  • Kumar R, Dunn A, Carcao M. 2016. Changing Paradigm of Hemophilia Management: Extended Half-Life Factor Concentrates and Gene Therapy.  Seminars in Thrombosis and Hemostasis. Vol. 42, no. 1. (February): 18-29.
  • Losos M, Kahwash B, Conces M, Thompson J, Kumar R, Kahwash S. 2016. Jacobsen/Paris-Trousseau Syndrome: Report of a Case with Emphasis on Platelet’s Light Microscopic and Ultrastructure Findings.  Open Journal of Pathology. Vol. 6, no. January: 8-13.
  • Kumar R, O'Brien S. 2015. aPTT in children receiving UFH: time for a change?.  Blood. Vol. 126, no. 18. (October): 2075-2076.
  • Kumar R, Dawson J, Chan AK, Forman-Kay JD, Kahr WH, Williams S. 2015. c.1058C>T Variant in the SERPINC1 Gene is Pathogenic for Antithrombin Deficiency.  British Journal of Hematology. Vol. 170, no. 1. (July): 123-125.
  • Kumar R, Rodriguez V, Matsumoto MS, Khan SP, Weaver AL, McBane R, Heit JA. 2015. Prevalence and Risk Factors for Post Thrombotic Syndrome after Deep Vein Thrombosis in Children.  Thrombosis Research. Vol. 135, no. 2. (February): 347-351.
  • Kottschade LA, Dronca RS, Salamao DR, Pulido J, Wasif N, Jakub JW, Bagaria SP, Kumar R, Kaur J, Moran S, Nguyen J, Nguyen E, Hand J, Morita S, Swanson D, Lowe V, Markovic S.N. 2014. Rare Presentations of Primary Melanoma and Special Populations: A Systematic Review.  American Journal of Clinical Oncology. Vol. 37, no. 6. (December): 635-41. PubMed ID: 23563206
  • Kumar, R, Chan, AK, Dawson, JE, Forman-Kay, JD, Kahr, WH, Williams, S. 2014. Clinical presentation and molecular basis of congenital antithrombin deficiency in children: a cohort study.  British Journal of Haematology. Vol. 166, no. 1. (July): 130-9.
  • Kumar R, Rodriguez V, Matsumoto J, Khan S, Weaver A, McBane R, Beebe T, Heit J. 2014. Health-Related Quality of Life in Children and Young Adults With Post-Thrombotic Syndrome: Results From a Cross-Sectional Study.  PEDIATRIC BLOOD & CANCER. Vol. 61, no. 3. (March): 546-551.
  • Kumar R, Carcao M. 2013. Inherited Abnormalities of Coagulation Hemophilia, von Willebrand Disease, and Beyond.  PEDIATRIC CLINICS OF NORTH AMERICA. Vol. 60, no. 6. (December): 1419-?.
  • Kumar R, Stain AM, Hilliard P, Carcao M. 2013. Consequences of delayed therapy for sports-related bleeds in patients with mild-to-moderate haemophilia and type 3 von Willebrand's disease not on prophylaxis.  HAEMOPHILIA. Vol. 19, no. 4. (July): e264-e267.
  • Kumar, R, Steele, M.G. 2013. Acquired Bleeding Disorders in Children. In SickKids Handbook of Pediatric Hemostasis and Thrombosis. 1 ed. Edited by Blanchette, V.S., Breakey, V.R., Revel-Vilk, S.. BASEL: KARGER.
  • Kumar R, Kahr W. 2013. Congenital Thrombocytopenia Clinical Manifestations, Laboratory Abnormalities, and Molecular Defects of a Heterogeneous Group of Conditions.  HEMATOLOGY-ONCOLOGY CLINICS OF NORTH AMERICA. Vol. 27, no. 3. (June): 465-?.
  • Kumar R, Moharir M, Yau I, Williams S. 2013. A Novel Mutation in the SerpinC1 Gene Presenting as Unprovoked Neonatal Cerebral Sinus Venous Thrombosis in a Kindred.  PEDIATRIC BLOOD & CANCER. Vol. 60, no. 1. (January): 133-136.
  • Warad D, Kumar R, Rodriguez V. 2012. Treatment of Hodgkin's lymphoma in a patient with type III von Willebrand's disease.  HAEMOPHILIA. Vol. 18, no. 5. (September): E378-E379.
  • Kumar R, Rodriguez V, Matsumoto J, Khan S, Weaver A, McBane R, Heit A. 2012. Development and initial validation of a questionnaire to diagnose the presence and severity of post-thrombotic syndrome in children.  PEDIATRIC BLOOD & CANCER. Vol. 58, no. 4. (April): 643-644.
  • Rao A, Kumar R, Altaf S, Gourde J, Rodriguez V, Khan S. 2012. Pretransplant Conditioning With Campath-1H (Alemtuzumab) in Pediatric Matched Unrelated Hematopoietic Stem Cell Transplants: An Institutional Experience.  JOURNAL OF PEDIATRIC HEMATOLOGY ONCOLOGY. Vol. 34, no. 2. (March): 96-100.
  • Kumar R, Rodriguez V, Khan S, Laack N, Arndt C. 2011. Postradiation Dermatofibrosarcoma Protuberans in a Patient With Wilms Tumor.  JOURNAL OF PEDIATRIC HEMATOLOGY ONCOLOGY. Vol. 33, no. 8. (December): 635-636.
  • Kumar R, Galardy P, Dogan A, Rodriguez V, Khan S. 2011. Rituximab in Combination With Multiagent Chemotherapy for Pediatric Follicular Lymphoma.  PEDIATRIC BLOOD & CANCER. Vol. 57, no. 2. (August): 317-320.
  • Kumar R [single author]. 2011. Post Thrombotic Syndrome in the Pediatric Population: A Retrospective Cohort Study. Ann Arbor, MI: ProQuest.
  • Oliveira J, Kumar R, Khan S, Law M, Erickson-Johnson M, Oliveira A, Ketterling R, Dogan A. 2011. Successful Treatment of a Child With T/Myeloid Acute Bilineal Leukemia Associated With TLX3/BCL11B Fusion and 9q Deletion.  PEDIATRIC BLOOD & CANCER. Vol. 56, no. 3. (March): 467-469.
  • Kumar R, Pruthi R, Kobrinsky N, Shaughnessy W, McKusick M, Rodriguez V. 2011. Pelvic Pseudotumor and Pseudoaneurysm in a Pediatric Patient With Moderate Hemophilia B: Successful Management With Arterial Embolization and Surgical Excision.  PEDIATRIC BLOOD & CANCER. Vol. 56, no. 3. (March): 484-487.
  • Kumar R, Khan S, Joshi D, Shaw G, Ketterling R, Feldman A. 2011. Pediatric Histiocytic Sarcoma Clonally Related to Precursor B-Cell Acute Lymphoblastic Leukemia With Homozygous Deletion of CDKN2A Encoding p16(INK4A).  PEDIATRIC BLOOD & CANCER. Vol. 56, no. 2. (February): 307-310.
  • Kumar R, Qureshi S, Mohanty P,Rao S, Miller S. 2010. A Short Course of Prednisone in the Management of Acute Chest Syndrome of Sickle Cell Disease.  JOURNAL OF PEDIATRIC HEMATOLOGY ONCOLOGY. Vol. 32, no. 3. (April): E91-E94.
  • Rao,A,AN; Kumar,R; Arteaga,G,M; Galardy,P,J; Rodriguez,V. 2009. Non-catheter related internal jugular vein thrombosis in a patient with severe haemophilia A.  HAEMOPHILIA. Vol. 15, no. 6. (November): 1339-1340.
  • Kumar R, Qureshi S, Jakkus J, Palma-Diaz M. 2009. A Severe Case of Acute Generalized Exanthematous Pustulosis (AGEP) in a Child After the Administration of Amoxicillin-Clavulanic acid: Brief Report.  PEDIATRIC DERMATOLOGY. Vol. 26, no. 5. (September): 623-625.
  • Kumar R, Pruthi RK, Rodriguez V. 2009. Central Venous Access Devices (CVADS) in Pediatric Patients with Hemophilia.  Journal of Coagulation Disorders. Vol. 1, no. January: 85-91/1.
  • Wang T-F, Dawson J, Forman-Kay J, Kahr WA, Williams S, Chan AK, Kumar R. 0. Molecular Structural Analysis of a Novel and De-Novo Mutation in the SERPINC1 GENE Associate with Type 1 Antithrombin Deficiency.  British Journal of Haematology.
  • Kumar, R., Kahr, W. Quantitative Platelet Disorders. In Practical Hemostasis and Thrombosis. Edited by Key, N. Lillicrap, D..
  • Kumar R, Steele MG. 0. Acquired Bleeding Disorders in Children. In SickKids Handbook of Pediatric Thrombosis and Hemostasis. Edited by Blanchette, V.S., Breakey, V.R., Revel-Vilk, S..
Nationwide Children's Hospital
700 Children's Drive Columbus, Ohio 43205 614.722.2000