Endocrinology fellow and faculty member conversing in a patient room at Mayo Clinic in Rochester, Minnesota.
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The two-year Endocrinology Fellowship at Mayo Clinic's campus in Rochester, Minnesota, is designed to deliver well-rounded clinical and research training to prepare you for the breadth and depth of clinical practice of this subspecialty. With a broad and highly specialized training experience, including dedicated, mentored research time, you will enjoy the professional, collegial atmosphere of the fellowship.

Unique program opportunities include:

  • One-on-one working relationships between fellows and faculty
  • A long-standing tradition of highly efficient and safe patient-centered care, creating an ideal setting for professional development where you:
    • Focus on education, not "navigating" your patients through a system
    • See any and all patients, as there are no "private attendings" at Mayo Clinic
    • Experience a large volume and variety of endocrine disorders ranging from common to exotic
    • Work with the on-site Endocrine Testing Center for conducting specialized diagnostic or therapeutic protocols, which is staffed by endocrine nurse specialists
    • Enjoy world-class in-house clinical laboratory services with rapid results
    • Have an outpatient Diabetes Unit for training patients in intensive insulin therapy
  • An established balance between education and service with:
    • Abundant time to devote to academic development throughout training (not just during research blocks)
    • Clinical assignments that reflect what endocrinologists do in clinical practice (>75% of clinical time is spent in outpatient subspecialty clinics)
    • Conferences five days a week
    • Generous supported travel benefit
  • The opportunity to acquire skills in clinical, basic, translational, or health care delivery and outcomes research (or a combination):
    • A Clinical Research and Trials Unit for conducting human interventional physiology studies
    • Protected time to complete Mayo Clinic Graduate School of Biomedical Sciences individual coursework without cost or advanced academic degrees in the Center for Clinical and Translational Science
    • Academic skills workshops including how to write a research manuscript, prepare a research protocol, write a grant proposal, give a presentation, and be an effective teacher
    • Dedicated, mentored research time
  • On average, fellows graduate with three academic publications

top hospital for diabetes & endocrinology (U.S. News, 2023-2024)

Video: Depth and breadth of endocrine expertise at Mayo Clinic


Video: Depth and breadth of endocrine expertise at Mayo Clinic

Endocrinology fellow and faculty member conversing in the hallway at Mayo Clinic in Rochester, Minnesota.

Your training experience

As a fellow at Mayo Clinic, you'll have access to robust clinical, educational, and research resources. You'll find support both inside and outside of the campus to promote physical and mental wellness and ensure your work/life balance.

More about the curriculum

More about life as a fellow

M. Regina Castro, M.D.

Director's welcome

In the Endocrinology Fellowship at Mayo Clinic, you have access to professional resources that will help guide your career development. Together, we will care for patients and learn in the Mayo Clinic system of health care that is unsurpassed anywhere in terms of quality, efficiency, technology, safety, and compassion.

More from the program director

See our graduate outcomes


The Endocrinology Fellowship is fully accredited by the Accreditation Council for Graduate Medical Education.

Program history

The Endocrinology Fellowship at Mayo Clinic in Rochester, Minnesota, was established in 1969. Since that time, 204 fellows have completed their training in this program. We anticipate that two trainees will complete this program annually.

Frequently asked questions (and answers)

Are there equal opportunities for non-green card holders or noncitizens for a research career?

Our two-year fellowship is internally funded so that highly motivated non-citizens can have the same opportunities for research and academic development as all other trainees.

Given Mayo Clinic draws patients from around the world, will I mainly see “zebras”?

We are the main healthcare provider for residents of Southern Minnesota, North Iowa, and Southwest Wisconsin. While we have many national and international patients with complex and unusual disorders, fellows see plenty of “bread-and-butter” endocrinology, especially in their first year. This includes a sizable immigrant population in Rochester that adds to the diversity of our employees and patients.

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Choosing Mayo Clinic

Mayo Clinic campus in Rochester, Minnesota.
Campus and community

Rochester, MN

Group of consultant, nurse, and residents discussing case in hallway at Mayo Clinic.

Stipend and benefits