Skip Navigation
Find a Doctor


Photo of Dr. Thomas Donner

Thomas W Donner, MD

Director, Johns Hopkins Diabetes Center
Associate Professor of Medicine
Appointment Phone


Main Location

The Johns Hopkins Hospital

View All Locations
Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-0773 (7a.m. to 6p.m., EST, Mon-Fri)

Learn more about our international patient services »


  • Director, Johns Hopkins Diabetes Center
  • Associate Professor of Medicine


Diabetes and Cardiovascular Diseases, Endocrinology

Research Interests

Immunotherapy; Insulin Therapy; Type 1 Diabetes


Dr. Donner's clinical and research interests have focused on the prevention of complications in patients with type 1 and 2 diabetes. For 6 years, he was the Associate Medical Director of the Joslin Diabetes Center affiliate at the University of Maryland, and then Medical Director from 2004 - 2010. After joining the faculty at Johns Hopkins University in 2010, his clinical and research interests became fully dedicated to diabetes. He became the Director of The Johns Hopkins Diabetes Center in 2011. He has been a clinical investigator in a number of NIH- and industry-funded diabetes research trials. Dr. Donner was a co-PI in the NIH-funded Veterans Affairs Implantable Insulin Pump Study, a Co-PI on the NIDDK-funded Diabetes Control and Complications Trial / Epidemiology of Diabetes Intervention and Complications (DCCT / EDIC) Study for 16 years, and Co-PI for the Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D) for 7 years. Recently, he has served as PI for the Durable-response therapy Evaluation For Early or New-onset type 1 Diabetes (DEFEND-1). Dr. Donner is currently collaborating with Dr. Abdel Hamad in Immunology on preventing B-regulatory cell apoptosis using a novel monoclonal antibody targeting the presumptive apoptotic factor. This antibody prevents the development of type 1 diabetes in non obese diabetic mice. Dr. Donner is the PI for Johns Hopkins for TrialNet, a multicenter, international consortium of investigators studying ways to prevent Type 1 diabetes and preserve insulin secretion in individuals with newly diagnosed Type 1 diabetes. He is also a PI for a study investigating FIAsp, a faster-acting insulin aspart in subjects with type 1 diabetes, and is working with investigators at the Johns Hopkins School of Engineering on an implantable insulin pump which delivers insulin intravenously.


  • English


American Diabetes Association

Endocrine Society

Additional Resources +
  • Education +


    • University of Virginia School of Medicine (Charlottesville VA) (1986)


    • University of Maryland Medical System / Internal Medicine (Baltimore MD) (1994)
    • University of Maryland Medical System / Internal Medicine (Baltimore MD) (1989)


    • University of Maryland Medical System / Endocrinology (Baltimore MD) (1993)


    • American Board of Internal Medicine / Endocrinology (2007)
    • American Board of Internal Medicine / Internal Medicine (1989)
  • Research & Publications +

    Research Summary

    Dr. Donner's clinical and research interests include aggressive management of type 1 and type 2 diabetes, preserving beta cell function in patients with new onset type 1 diabetes, and the prevention of diabetes complications.

    Clinical Trials

    1. 1R01AI099027-01 NIH/NIAID  Hamad (PI) 03/01/13 - 03/31/18                                                                                                                                       

    Mechanisms of Fas Ligand control of insulitis initiation in autoimmune diabetes

    Role: Co-investigator

    2. NIDDK   Donner (PI) 05/13 – present

    The Natural History Study of the Development of Type 1 Diabetes

    Role: PI

    3. NovoNordisk     Donner (PI)     10/13 - present

    Efficacy and Safety of FIAsp Compared to Insulin Aspart Both in Combination With Insulin Detemir in Adults With Type 1 Diabetes


  • Academic Affiliations & Courses +
  • Activities & Honors +
  • Videos & Media +
  • Events +
  • Contact & Locations +


    The Johns Hopkins Hospital
    600 N. Wolfe Street
    Hospital Main Entrance - Sheikh Zayed Tower
    Baltimore, MD 21287
    Appointment Phone: 410-955-2908
    Fax: 410-955-8172
    Location Map
    Johns Hopkins Outpatient Center
    601 N. Caroline Street
    Baltimore, MD 21287
    Appointment Phone: 410 955 2908
    Fax: 410 955 8172
    Location Map


    • Medicine - Endocrinology, Diabetes, & Metabolism

    For Research Inquiries Contact

    Sarah Longenecker

Is This You? Edit Profile


© The Johns Hopkins University, The Johns Hopkins Hospital, and Johns Hopkins Health System. All rights reserved.

Privacy Policy and Disclaimer