Hematology/Oncology Fellowship

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The Robert Larner, M.D. College of Medicine at The University of Vermont, in partnership with our on-campus teaching hospital The University of Vermont Medical Center, offers a 3-year program designed to prepare physicians for successful ABIM board certification in both Hematology and Medical Oncology and for careers in academic and clinical practice.

Our ACGME-accredited program began in 1975 and has since produced over 50 board-certified Medical Oncologists and Hematologists. The current program consists of 6 fellows, 2 per year, and 19 faculty members.

Educational Opportunities

Multidisciplinary Conferences

Didactic Lectures

Grand Rounds

Journal Clubs

Research Projects

Teaching residents & medical students

Training in a Clinical Simulation Laboratory  

Educational Procedures




Lumbar puncture and Intrathecal chemotherapy

Fine needle aspirates

Bone marrow biopsy

Therapeutic apheresis including peripheral

Blood stem cell collection.


Fellows Ryan Thomas (upper) and Rohit Singh (lower) with posters and awards at the 2023 NECCOs conference. 


Our Fellows



Third Year Fellows


David Alejos Castillo, MD

Internal Medicine Residency: Jacobi Medical Center/Albert Einstein College of Medicine, Bronx, NY

Board Certification: Internal Medicine

Rohit Singh, MB, BS
Internal Medicine Residency: Yale-New Haven Medical Center, New Haven, CT

Board Certification: Internal Medicine

Second Year Fellows


Ryan Thomas, MD

Internal Residency: University of Vermont Medical Center, Burlington, VT 

Board Certification: Internal Medicine

Xiaocao "Haze" Xu, MB BS

Internal Medicine Residency: Berkshire Medical Center, Pittsfield, MA

Board Certification: Internal Medicine


First year Fellows

2023 - 2026

Ikechukwu Joseph Chidobem, MB BS

Internal Medicine Residency: New York Medical College/St. Mary & St. Clare Hospital

Board Certification: Internal Medicine

Jinah Kim, MD

Internal Medicine Residency: University of Pittsburgh Medical Center

Board Certification: Internal Medicine