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In the News
Newborn Fighting for Life, Believed To Have Contracted Rare Tick-Borne Illness
August 5, 2025
Shira Doron, MD, Chief Infection Control Officer for Tufts Medicine and Hospital Epidemiologist at Tufts Medical Center, in three stories about a one-month-old baby, who contracted Powassan virus from a tick bite on Martha’s Vineyard.
In the News
Rare Tick-Borne Powassan Virus Suspected of Infecting Newborn on Martha’s Vineyard: “She Is Still Fighting”
August 5, 2025
Shira Doron, MD, Chief Infection Control Officer for Tufts Medicine and Hospital Epidemiologist at Tufts Medical Center, in three stories about a one-month-old baby, who contracted Powassan virus from a tick bite on Martha’s Vineyard.
In the News
Smoke from Canadian Wildfires Plagues Air in New England
August 5, 2025
Jeremy Weinberger, MD, Pulmonologist and Critical Care Physician at Tufts Medical Center, in a story about the impact of Canadian wildfires on air quality in New England.
In the News
As Canadian Wildfire Smoke Blankets New England, Experts Offer Tips To Keep Safe
August 6, 2025
Sucharita Kher, MD, Pulmonologist and Vice Chair of Clinical Operations and Quality for the Department of Medicine at Tufts Medical Center, in a story about the impact of Canadian wildfires on air quality in New England and how to stay safe.

Meet the radiation oncology faculty shaping tomorrow’s leaders

Our faculty are nationally recognized experts in radiation oncology, dedicated to mentoring the next generation of clinicians and researchers. With a commitment to evidence-based care, innovation and education, they create a supportive training environment where residents can thrive. Through hands-on teaching and active research, our team ensures residents gain the skills and insight needed to lead in a fast-evolving field.

Program leadership

Matthew Katz, MD

Matthew Katz, MD

Title: Interim Chairman and Residency Program Director, Tufts Medical Center
Academic Appointment: Associate Professor, Tufts University School of Medicine
Specialties: Head and neck cancer, thoracic malignancies, breast, rectal, anal, prostate, bladder cancer
Medical School: University of Massachusetts
Residency: Memorial Sloan-Kettering Cancer Center
Board Certification: Radiation Oncology
Contact: Matthew.Katz@tuftsmedicine.org

Kathryn Huber, MD, PhD

Kathryn Huber, MD, PhD

Title: Associate Residency Program Director, Beth Israel Medical Center
Academic Appointment: Assistant Professor, Harvard Medical School (Pending)
Specialties: Head and neck, cutaneous, gastrointestinal, breast, thoracic malignancies
Medical School: Tufts University School of Medicine
Residency: Tufts Medical Center
Board Certification: Radiation Oncology
Contact: khuber2@bidmc.harvard.edu

Gavin Jones, MD

Gavin Jones, MD

Title: Associate Residency Program Director, UMass Medical Center
Academic Appointment: Assistant Professor, UMass
Medical School: University of Virginia
Residency: Tufts Medical Center
Board Certification: Radiation Oncology
Contact: Gavin.Jones@umassmemorial.org

Cassandra Stambaugh, PhD, DABR

Cassandra Stambaugh, PhD, DABR

Title: Medical Physicist, Resident Advocate, Physics Course Director
Academic Appointment: Associate Professor, Tufts University School of Medicine
Specialties: Medical physics, patient safety, Gamma Knife
Graduate Training: Bates College, Northeastern University, University of South Florida 
Residency: Mayo Clinic
Board Certification: Therapeutic Radiologic Physics
Contact: Cassandra.Stambaugh@tuftsmedicine.org

Tufts Medical Center faculty

Mark Bonnen, MD 

Title: Radiation Oncologist, Cancer Service Line Executive 
Academic Appointment: Visiting Professor, Tufts University School of Medicine 
Specialties: Breast cancer, gynecologic cancer, head and neck cancer, brachytherapy 
Medical School: UT Health Science Center 
Residency: MD Anderson Cancer Center 
Board Certification: Radiation Oncology

Brett Diamond, MD

Brett Diamond, MD

Title: Radiation Oncologist
Academic Appointment: Assistant Professor, Tufts University School of Medicine
Specialties: Gynecologic, genitourinary, head and neck, breast cancers
Medical School: University of Connecticut
Board Eligible: Radiation Oncology

John E. Mignano

John E. Mignano, MD, PhD

Title: Radiation Oncologist, Associate Clinic Director
Academic Appointment: Associate Professor, Tufts University School of Medicine
Specialties: General radiotherapy, Gamma Knife, pediatric radiation oncology
Medical School: University of Pittsburgh
Residency: Johns Hopkins Hospital
Fellowship: Tufts Medical Center
Board Certification: Radiation Oncology

Christopher S. Melhus, PhD, DABR

Christopher S. Melhus, PhD, DABR

Title: Chief, Radiation Oncology Medical Physics
Academic Appointment: Associate Professor, Tufts University School of Medicine
Specialties: Therapeutic radiologic physics, quality assurance
Education: Reed College, MIT, Harvard-MIT HST Program
Board Certification: Therapeutic Radiologic Physics

Elizabeth Meyer, MS, DABR

Elizabeth (Libby) Meyer, MS, DABR

Title: Medical Physicist
Academic Appointment: Instructor, Tufts University School of Medicine
Specialties: Dosimetry
Education: Smith College, Columbia University
Board Certification: Therapeutic Medical Physics

Beth Israel Deaconess Medical Center faculty

Mary Ann Stevenson, MD, PhD

Mary Ann Stevenson, MD, PhD

Title: Chair and Chief, Radiation Oncology
Academic Appointment: Associate Professor, Harvard Medical School
Medical School: Stanford University
Board Certification: Radiation Oncology

Joseph A. Aronovitz, MD, PhD

Joseph A. Aronovitz, MD, PhD

Title: Radiation Oncologist
Academic Appointment: Instructor, Harvard Medical School
Medical School: Washington University
Board Certification: Radiation Oncology

Stuart M. Berman, MD

Stuart M. Berman, MD

Title: Radiation Oncologist
Academic Appointment: Instructor, Harvard Medical School
Medical School: University of Virginia
Board Certification: Radiation Oncology

Lauren M. Hertan, MD

Lauren M. Hertan, MD

Title: Radiation Oncologist
Academic Appointment: Instructor, Harvard Medical School
Medical School: University of Pennsylvania
Board Certification: Radiation Oncology

Joanne W. Jang, MD, PhD

Joanne W. Jang, MD, PhD

Title: Radiation Oncologist
Academic Appointment: Assistant Professor, Harvard Medical School
Medical School: University of Pennsylvania
Board Certification: Radiation Oncology

Irving Davin Kaplan, MD

Irving David Kaplan, MD

Title: Co-Director, Prostate Cancer Program
Medical School: Stanford University
Board Certification: Radiation Oncology

Eric Ko, MD, PhD

Title: Disease Site Leader (GU Oncology)
Academic Appointment: Assistant Professor of Radiation Oncology, Harvard Medical School
Specialties: GU/Prostate
Medical School: SUNY Buffalo
Board Certification: Radiation Oncology

Brigid M. O'Connor, MD, PhD

Brigid M. O’Connor, MD, PhD

Title: Radiation Oncologist
Medical School: Boston University

Abram Recht, MD

Abram Recht, MD

Title: Professor, Harvard Medical School
Medical School: Johns Hopkins University
Board Certification: Radiation Oncology

Daniel Schmidt, MD, PhD

Daniel Schmidt, MD, PhD

Title: Radiation Oncologist
Academic Appointment: Instructor, Harvard Medical School
Medical School: University of Texas Southwestern
Board Certification: Radiation Oncology

Beth Israel Deaconess Medical Center medical physicists

Gleb Kuzmin, PhD, DABR

Gleb Kuzmin, PhD, DABR

Title: Medical Physicist
Academic Appointment: Lecturer
Specialties: Stereotactic radiosurgery and radiotherapy
Education: University of Texas at Austin, Texas A&M, Cleveland Clinic
Board Certification: Therapeutic Medical Physics

Stefano Peca, PhD

Stefano Peca, PhD

Title: Medical Physicist, Manager of Treatment Planning
Education: Sapienza University of Rome, University of Calgary
Board Certification: Canadian College of Physicists in Medicine

Qian Wang, PhD

Qian Wang, PhD

Title: Medical Physicist
Academic Appointment: Clinical Faculty
Specialties: External beam radiotherapy, CyberKnife radiosurgery
Education: Hebei Normal University, Capital Normal University, UMass Lowell, University of Pennsylvania, Emory University
Board Eligible

Feng-Ju Yeh, MS, DABR

Feng-Ju Yeh, MS, DABR

Title: Medical Physicist
Specialties: HDR, Quality Assurance
Education: National Yang Ming University, Duke University
Board Certification: Therapeutic Radiologic Physics

University of Massachusetts Memorial Medical Center faculty

Thomas J. Fitzgerald, MD

Thomas J. Fitzgerald, MD

Title: Chair, Department of Radiation Oncology
Academic Appointment: Professor, UMass Medical School
Medical School: University of Massachusetts
Board Certification: Radiation Oncology

Alexander Chi, MD

Alexander Chi, MD

Academic Appointment: Professor, UMass Medical School
Medical School: Virginia Commonwealth University
Board Certification: Radiation Oncology

David Harris, MD

David Harris, MD

Academic Appointment: Assistant Professor, UMass Medical School
Medical School: University of Alabama Birmingham
Board Certification: Radiation Oncology

Jessica Yancey, MD

Jessica Yancey, MD

Academic Appointment: Assistant Professor, Radiation Oncology, University of Massachusetts Medical School
Medical School: University of Massachusetts
Postgraduate Training: Tufts Medical Center
Board Certification: Radiation Oncology

Sheida Mani, MD

Sheida Mani, MD

Academic Appointment: Assistant Professor, Radiation Oncology, University of Massachusetts Medical School
Medical School: Johannes-Gutenberg Universitat Mainz
Postgraduate Training: NYU Langone Medical Center
Board Certification: Radiation Oncology

Allison Sacher, MD

Allison Sacher, MD

Academic Appointment: Assistant Professor, Radiation Oncology, University of Massachusetts Medical School
Medical School: Mount Sinai School of Medicine
Postgraduate Training: Mount Sinai Medical Center
Board Certification: Radiation Oncology

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Program Leadership + Faculty
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Radiation Oncology Residency Program

Current residents training in radiation oncology at Tufts Medical Center

Our Radiation Oncology Residency Program at Tufts Medical Center is proud to train a diverse and talented group of residents. Each year, our residents bring unique perspectives and a shared dedication to clinical excellence, research and compassionate patient care.

Our current residents are engaged in rigorous training across multiple clinical sites, participate in research and quality improvement projects, and benefit from close mentorship by experienced faculty. They embody the collaborative spirit and professionalism that define our program.

We are excited to support their growth as they develop into skilled radiation oncologists ready to make a difference in the field.

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Current Residents
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Radiation Oncology Residency Program

Innovating cancer care with our radiation oncology faculty + residents at Tufts Medical Center

Our radiation oncology team at Tufts Medical Center is made up of dedicated faculty, experienced clinicians, researchers and educators committed to providing outstanding patient care and training the next generation of radiation oncologists.

Our faculty brings diverse expertise across cancer types, treatment techniques and research, creating a rich learning environment for residents and students. They are passionate mentors who support residents’ professional growth through personalized guidance, collaborative clinical care and cutting-edge research opportunities.

In addition to physicians, our team includes skilled medical physicists, radiation therapists, nurses and support staff who work closely together to deliver compassionate, high-quality care. This multidisciplinary team approach benefits both our patients and trainees alike.

Celebrating excellence in radiation oncology research

We’re proud to recognize our residents who have been honored with the Roentgen Resident Research Award, presented by the Radiological Society of North America (RSNA). This prestigious award highlights exceptional residents who have made significant contributions to radiologic research through peer-reviewed publications, national presentations, grant funding or impactful work in departmental research programs.

Award recipients:

  • 2025: Chaewon Hwang, MD
  • 2024: Abbas Rattani, MD
  • 2023: Brett H. Diamond, MD
  • 2022: Utkarsh C. Shukla, MD

These honors reflect our department’s commitment to research, mentorship and advancing the science of radiation oncology.

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Our People
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Radiation Oncology Residency Program

Build research skills in clinical + translational science in radiation oncology

Our program offers robust opportunities to engage in clinical research alongside expert faculty. Residents have access to active clinical trials and can participate in studies ranging from retrospective chart reviews to the development of investigator-initiated trials.

Through the Clinical and Translational Research Center, residents receive academic training in trial development and are encouraged to take an active role in research efforts. Each project is guided by a dedicated faculty mentor to support research design, implementation and publication.

In collaboration with our medical physics team, residents and medical students can also explore research topics in:

  • Treatment planning
  • Dosimetry
  • Imaging
  • Radiobiological calculations

These projects offer the chance to develop independent research skills while contributing to the advancement of cancer care.

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Research Opportunities
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Radiation Oncology Residency Program

Explore radiation oncology through our medical student elective

Medical student education is a vital part of our academic mission. Through a two- to four-week elective, we welcome Tufts University School of Medicine students to experience the full spectrum of cancer care—from diagnosis to follow-up—while gaining insight into the role of radiation oncology in a multidisciplinary setting.

What to expect during your rotation

During the elective, students become active members of the care team. You’ll have the opportunity to:

  • Participate in initial consultations, treatment planning and follow-up care
  • Observe and assist in patient care across a variety of malignancies
  • Learn how we approach cancer treatment with evidence-based, patient-centered strategies
  • Get hands-on exposure to the advanced technology used in our department

This immersive experience offers a close-up look at the practice of radiation oncology, emphasizing collaboration across specialties and the value of individualized care.

A strong foundation for your future

Our faculty are committed to teaching and mentorship. Students consistently note that their learning goals were clearly communicated and that they felt supported throughout the rotation. Feedback from past participants highlights the educational value of the experience and its positive impact on their understanding of cancer care.

At the end of the elective, students are invited to share feedback through a structured evaluation, which helps us continuously refine and improve the experience.

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Medical Student Elective
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Radiation Oncology Residency Program

Radiation oncology resident call responsibilities + clinical rotations at Tufts Medical Center

Residents in the Radiation Oncology Residency Program complete clinical rotations at Tufts Medical Center, Beth Israel Deaconess Medical Center, and some rotations at the University of Massachusetts. Pediatric rotations are conducted in collaboration with Boston Children’s Hospital and Brigham and Women’s Hospital. This variety of clinical sites ensures residents gain broad exposure to diverse patient populations and complex cases.

Call duties are assigned in one-week blocks, with residents taking a maximum of one week of consecutive call at a time. PGY-2 residents do not participate on calls during their first two months, receiving focused training before beginning call responsibilities. Call coverage extends to both Tufts Medical Center and Beth Israel Deaconess Medical Center. Throughout the four-year program, residents take approximately 24 weeks of call. There is no in-house call coverage.

While on call, residents and their assigned attending physician manage all after-hours radiation oncology needs at their institution. This includes handling phone calls, performing in-house consultations and arranging urgent or emergent radiation treatments. These duties teach residents to manage common and critical clinical situations such as radiation side effects, brain metastases, malignant spinal cord compression, malignant hemorrhage, painful metastases and airway obstruction.

The program strictly complies with ACGME regulations governing resident work hours to maintain a safe and balanced training environment.

Important details about rotations and call responsibilities:

  • Residents complete rotations at Tufts Medical Center, Beth Israel Deaconess Medical Center and the University of Massachusetts
  • Pediatric rotations are offered in partnership with Boston Children’s Hospital and Brigham and Women’s Hospital
  • Call shifts are scheduled in one-week blocks, with no more than one week of consecutive calls
  • PGY-2 residents are excused from call during their first two months and receive dedicated training before starting call duties
  • Call coverage spans both Tufts Medical Center and Beth Israel Deaconess Medical Center
  • Residents take approximately 24 weeks of call throughout the four-year residency
  • On call, residents manage after-hours radiation oncology needs, including phone consultations, in-house evaluations and urgent radiation treatments
  • Common clinical issues addressed on call include radiation side effects, brain metastases, spinal cord compression, bleeding, painful metastases and airway obstruction
  • The program adheres strictly to ACGME work hour standards to ensure resident well-being and training quality
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Rotations + Schedules
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Radiation Oncology Residency Program
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