Timothy J. Nelson, M.D., Ph.D.

  1. Internist
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I'm Tim Nelson. I'm a physician/scientist at Mayo Clinic. I work in the Transplant Center, and I specialize in cardiac regeneration for congenital heart disease.

I think it's the patient experience that really defines us at Mayo Clinic. It's everything that affects the patient matters to us. We have an expectation in our culture to find new innovative ways of doing things. And that's a unique thing about Mayo, and that's what really drives state of the art cutting edge research.

Children with congenital heart disease is what motivates our whole research program. We currently have three clinical trials where we are actually delivering stem cells into the hearts of infants and children with congenital heart disease, with the goal of rebuilding their heart tissue. This is exciting, because we think that this actually may be able to transform the way we take care of kids with these congenital heart problems.

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Timothy J. Nelson, M.D., Ph.D., is a general internal medicine practitioner, with a specialty interest in regenerative medicine.

Areas of expertise include:

  • Congenital and degenerative heart disease, including hypoplastic left heart syndrome (HLHS)
  • Clinical trials for regenerative medicine and stem cell therapies
  • Translational transplant medicine
  • Application of stem cell technologies in treating degenerative diseases
  • Ethics of stem cell technologies and therapies

In addition to his clinical activities, Dr. Nelson is active in research and education, mentoring students and fellows, and teaching multiple courses to graduate and medical students.

Dr. Nelson is the director of the Todd and Karen Wanek Family Program for Hypoplastic Left Heart Syndrome at Mayo Clinic, Rochester, Minnesota.

  1. Congenital heart disease
  2. Heart disease
  • Regenerative medicine
  • Stem cell technologies
  • Translational transplant medicine
  • Congenital and degenerative heart disease
  • Clinical trials for regenerative medicine and stem cell therapies
  • Ethics of stem cell technologies/therapies
  1. 2010
    Chief ResidentClinician-Investigator Training Program, Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine
  2. 2010
    Research Fellowship - Clinician-Investigator Training ProgramDivision of Cardiovascular Diseases, Department of Internal Medicine
  3. 2008
    ResidentInternal Medicine Residency Program, Department of Internal Medicine
  4. 1998
    BS - Biochemistry and Molecular Biology, summa cum laudeUniversity of Wisconsin, Eau Claire


  1. 2008
    Internal MedicineAmerican Board of Internal Medicine


Research activities

See a description of research activities.