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Tom W. Donner

Tom W. Donner, MD

Endocrinology

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Highlights

Age Groups Seen

  • Young Adult 18-25
  • Adult 26-64
  • Older Adult 65+

Languages

  • German
  • English

Gender

Male

Johns Hopkins Affiliations:

  • Johns Hopkins School of Medicine Faculty

About Tom W. Donner

Professional Titles

  • Director, Johns Hopkins Diabetes Center

Primary Academic Title

Associate Professor of Medicine

Johns Hopkins Physician

Logo for Johns Hopkins Physician

Background

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.

Clinical Trial Keywords

Type 1 diabetes, immunotherapy, stem cell therapy

Clinical Trials Summary

1.  VA Cooperative Study #334A (Hamilton PI) 3/92 - 10/94

     The Veterans Affairs Implantable Insulin Pump Study

      Role: Co-Investigator, 5% effort

2.   N01-DK-6-2203 (Counts PI) 3/95 – 7/10

      The Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and           Complications

     Role: Co- Investigator

3.  5U01H1061744      7/1/01 – 6/1/09

     Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D)        

     Role: Co- Investigator

4. 1R01AI099027-01 NIH/NIAID  Hamad (PI) 03/01/13 - 03/31/18 03/31/18                                              

     Mechanisms of Fas Ligand control of insulitis initiation in autoimmune diabetes

     Role: Co-investigator

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

    The Natural History Study of the Development of Type 1 Diabetes

6. Viacyte, Inc. Donner PI   2/18-12/21 

    An Open-Label, First-In-Human, Study Evaluating the Safety, Tolerability, and Efficacy of VC-02™          Combination Product in Subjects with Type 1 Diabetes Mellitus and Hypoglycemia Unawareness

7. Diamyd Medical   Donner PI  3/24 - present

     A Phase III, Randomized, Double-blind, Placebo-controlled, Multicenter Trial to Evaluate the          Efficacy and Safety of Diamyd® to Preserve Endogenous Beta Cell Function in Adolescents and Adults with Recently Diagnosed Type 1 Diabetes, Carrying the Genetic HLA DR3-DQ2 Haplotype

 

 

 

Find a Clinical Trial

View all trials by this principal investigator.

Contact for Research Inquiries


Baltimore, MD 21205

Phone: (410) 614-0905

apage20@jhmi.edu
 

Research Interests

Immunotherapy, Insulin Therapy, Type 1 Diabetes

Lab Website

Thomas W. Donner Lab

  • The Thomas W. Donner Lab focuses on type 1 diabetes, with an emphasis on ways to improve the management of diabetes, and ways to prevent, slow beta cell loss and cure type 1 diabetes. We're currently collaborating with Dr. Abdel Hamad to investigate the immune "X" cell discovered in his lab that appears to play a critical role in the autoimmune destruction of pancreatic beta cells leading to the development of type 1 diabetes. An antibody from that cell call the X monoclonal antibody has been shown to reverse diabetes in the NOD mouse. We also participate in Trial Net, a multi-center, international consortium of researchers studying ways to prevent type 1 diabetes and preserve insulin secretion in people who have been recently diagnosed with the chronic condition.

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.

Memberships

  • American Diabetes Association

Locations

  1. Levi Watkins, Jr., M.D., Outpatient Center
  2. Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
    • 10751 Falls Road, Falls Concourse STE 412, Lutherville, MD 21093
    • Get Directions

Expertise

Education

  • Residency: University of Maryland Medical Center, Internal Medicine, 1994
  • Fellowship: University of Maryland Medical Center, Endocrinology, 1993
  • Residency: University of Maryland Medical Center, Internal Medicine, 1989
  • Medical Education: University of Virginia School of Medicine, MD, 1986

Board Certifications

  • Internal Medicine: American Board of Internal Medicine, 1989

Insurance

Please contact the location directly to confirm your health plan is accepted.
Search plans
  • Aetna
  • CareFirst
  • Cigna
  • First Health
  • Geisinger Health Plan
  • HealthSmart/Accel
  • Johns Hopkins Health Plans
  • MultiPlan
  • Pennsylvania's Preferred Health Networks (PPHN)
  • Point Comfort Underwriters
  • Private Healthcare Systems (PHCS)
  • Veteran Affairs Community Care Network (Optum-VACCN)

Ratings & Reviews

5 out of 5

78 ratings, 36 reviews

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

Overall Rating by Patient
Provider Listened Carefully
Provider Explained Things Clearly
Provider Knew Medical History
Provider Showed Respect
Provider Spent Enough Time
Search reviews
    5 out of 5 stars
    Reviewed on 3/19/2026

    Positive, supportive, knowledgeable about condition

    5 out of 5 stars
    Reviewed on 2/26/2026

    Excellent!

    5 out of 5 stars
    Reviewed on 2/26/2026

    Dr Donner has always responded very quickly to any mychart question I have asked him. He cares a great deal about his patients. I am lucky to have him

    5 out of 5 stars
    Reviewed on 2/24/2026

    The best ever, anywhere!

    5 out of 5 stars
    Reviewed on 2/17/2026

    Dr Donner is the best ever!

    5 out of 5 stars
    Reviewed on 1/27/2026

    Dr Donner is excellent

    5 out of 5 stars
    Reviewed on 1/27/2026

    Dr Donner has always been very helpful and kind. I appreciate the care given

    5 out of 5 stars
    Reviewed on 1/27/2026

    Dr. Donner is always on time, courteous and knowledgable. We trust him implicitly.

    5 out of 5 stars
    Reviewed on 1/27/2026

    Dr Donner is an excellent, attentive, considerate physician, with vast experience treating diabetes.

    5 out of 5 stars
    Reviewed on 1/22/2026

    Dr Donner is the best endocrinologist! I can't imagine seeing anyone else.

    5 out of 5 stars
    Reviewed on 1/20/2026

    He is the best!!

    5 out of 5 stars
    Reviewed on 1/15/2026

    Excellent provider. Very knowledgeable of the Type 1 Diabetes.

    5 out of 5 stars
    Reviewed on 1/6/2026

    What a dream to have (one of?) the most knowledgeable diabetic specialists in the world provide such patient, concerned attention to me as a patient over a period of decades.

    5 out of 5 stars
    Reviewed on 11/18/2025

    Always willing to listen and explain

    5 out of 5 stars
    Reviewed on 9/25/2025

    Dr Donner is truly outstanding, the very best!

    5 out of 5 stars
    Reviewed on 9/23/2025

    The best in the World f

    5 out of 5 stars
    Reviewed on 9/9/2025

    Best Doctor ever ! Very through exam. Ask all the right questions. Took blood pressure twice to get correct reading. Dr. Donner is GREAT.

    5 out of 5 stars
    Reviewed on 9/2/2025

    Excellent communication and listening

    5 out of 5 stars
    Reviewed on 8/28/2025

    Dr Donner is fantastic. No doubt he is also very busy. It would have been helpful to understand that he was delayed as I arrived on time yet had to wait an hour before seeing him.

    5 out of 5 stars
    Reviewed on 8/21/2025

    Excellent provider

    2 out of 5 stars
    Reviewed on 8/21/2025

    He is very kind and respectful. Although, I often feel like my concerns are hurried through and at times not fully addressed.

    5 out of 5 stars
    Reviewed on 8/19/2025

    Dr. Donner was exceptional! Very experienced, knowledgeable and kind. So glad we connected with him.

    5 out of 5 stars
    Reviewed on 8/19/2025

    Excellent as always.

    5 out of 5 stars
    Reviewed on 8/7/2025

    Excellent, thorough, innovative

    5 out of 5 stars
    Reviewed on 7/10/2025

    Very informative

    5 out of 5 stars
    Reviewed on 7/10/2025

    Dr Donner is a smart doctor and an exceptional Human Being. He understands and treats the complexity of my disease.

    5 out of 5 stars
    Reviewed on 7/8/2025

    Dr. Donner is an excellent doctor.

    5 out of 5 stars
    Reviewed on 7/3/2025

    Excellent, thorough, thoughtful.

    5 out of 5 stars
    Reviewed on 6/17/2025

    Excellent. Very educated

    5 out of 5 stars
    Reviewed on 5/29/2025

    Thomas Donner is excellent in his field

    5 out of 5 stars
    Reviewed on 5/23/2025

    Dr. Donner is kind, thorough, knowledgeable, and a highly skilled practitioner and diagnostician. He is truly excellent in every way and the very best!

    5 out of 5 stars
    Reviewed on 5/6/2025

    Dr Donner is always an excellent physician. He never makes me feel rushed even though I know there are many other patients waiting to be seen

    5 out of 5 stars
    Reviewed on 5/6/2025

    Dr Thomas Donner is an outstanding Doctor. He is thorough and provides exceptional care.

    5 out of 5 stars
    Reviewed on 4/25/2025

    Goes way beyond good in providing care. Best of my six specialists

    5 out of 5 stars
    Reviewed on 4/15/2025

    Dr Donner is fantastic. He had studied my chart before my appointment. He said everything in speak that I could easily understand and comprehend.

    5 out of 5 stars
    Reviewed on 4/15/2025

    Excellent