About
Welcome to the home of the Mid-Atlantic Chapter of the AAPM. We are medical physicists located in Virginia, Maryland, Delaware, and Washington, DC. We hold an annual meeting and support our regional trainees with annual Mock Oral Exams and MedPhys Slam Competitions.
Thanks for visiting our website, and please don’t hesitate to email us if you’d like more information about membership, becoming a sponsor, or attending one of our functions!
The MACAAPM Officers consist of an Acting President, President-Elect, Past-President, Secretary, Treasurer, and Chapter Representative to the Board.
2026 Officers
To nominate someone for a future office, please fill out this form:
Fionnbarr is a therapeutic medical physicist specializing in proton therapy at the Inova Schar Cancer Institute in Fairfax Virginia. He started his career in particle physics before transitioning to medical physics in 2015. After completing his residency training at the University of Pennsylvania in 2019 he relocated to northern Virginia where he has been based since then. He is passionate about clinical work, research, and education. His professional ambition is to work to improve the quality of care for patients and to contribute to the broader development of the field of radiation oncology through research and collaboration in professional organizations such as the AAPM.

Sung-Woo Lee, PhD, received his Bachelor of Science and Master of Science degrees in Nuclear Engineering from Hanyang University in Seoul, Korea. He subsequently earned a second Master of Science degree in Health Physics from Texas A&M University in College Station, Texas. In 2003, he completed his PhD in Nuclear Engineering at Texas A&M University, with a specialization in Health Physics and Medical Physics. Immediately following completion of his PhD, he joined the Henry Ford Health System in Detroit, Michigan, as a postdoctoral fellow. Prior to joining UMMC, he worked in the Departments of Radiation Oncology at St. Anne’s Hospital in Massachusetts and at Rhode Island Hospital, where he served as an Associate Medical Physicist until 2015. He has over 20 years of experience in radiation therapy physics across a broad range of treatment modalities. His professional interests include patient safety, clinical research, and the education of the next generation of medical physics professionals.

Nrusingh Biswal is an Associate Professor and Director of the Graduate Certificate Program in Medical Physics at the University of Maryland School of Medicine and works at Maryland Proton Treatment Center. He received his Ph.D. in Electrical Engineering from the University of Connecticut and did his residency in Therapeutic Medical Physics at the Rush University Medical Center, Chicago. He was a faculty physicist at Rutgers University, New Jersey before moving to Maryland. He keeps a good balance between patient care, research, and education. His current research focuses on proton therapy, predicting radiation-induced skin toxicities, studying tumor microenvironments during treatment, and tumor hyperthermia. In addition to teaching residents, dosimetry, and medical physics certificate students, he has been engaged in mentoring a diversity of students from early high schoolers to doctoral degree students in the United States and India.

Tianjun Ma is a therapeutic medical physicist with Virginia Commonwealth University and completed his degree at the University at Buffalo and residency training at Cleveland Clinic. He enjoys learning about new technologies and being around with students. Apart from his routine clinical duties, programming and 3D printing are his primary clinical interests. His research focus is on data science/automation in Radiation Oncology. Professionally, he is actively volunteering in AAPM’s task groups.

Shifeng Chen is a Professor and Chief of Clinical Medical Physics in the Department of Radiation Oncology at the University of Maryland School of Medicine. He has been active in the AAPM as a committee member, associate editor, journal reviewer, annual meeting reviewer, moderator, and mentor of the AAPM mentor ship program, etc. He also enjoys volunteering with the American Board of Radiology. It has always been his career goal to have a positive impact on the lives of cancer patients worldwide through clinical care, research, and education.

Jinghao (Sean) Zhou is an Associate Professor and a leading therapeutic medical physicist at the University of Maryland School of Medicine, with clinical practice at the University of Maryland Shore Regional Cancer Center. He earned his PhD in Biomedical Engineering from Rutgers, The State University of New Jersey, and completed residency training at Rutgers Cancer Institute of New Jersey. He actively serves the AAPM as a committee member and journal reviewer, teaches in medical residency and medical physics certification programs, and conducts research on robust image analysis methods and clinical radiotherapy software systems.

Hall of Fame
Coolidge Award Winners
| 2017 | Jatinder Palta |
| 1995 | Robert Loevinger |
Award of Achievement in Medical Physics
| 2013 | Caridad Borrás |
| 2009 | James A. Deye |
| 2006 | Azam Niroomand-Rad |
Chapter Fellows
| 2020 | David J. Schlesinger, PhD, FAAPM |
| 2013 | Todd R. McNutt, PhD, FAAPM |
| 2013 | Karl L. Prado, PhD, FAAPM, FACR |
| 2007 | Mahadevappa Mahesh, PhD, MS, FAAPM, FACR, FSCCT, FACMP |
| 2004 | Caridad Borras, DSc, FAAPM, FIUPESM, FACR, FIOMP, FHPS |
| 2004 | John W. Wong, PhD, FAAPM |
| 2002 | Cedric X. Yu, DSc, FAAPM |
| 1996 | Jatinder R. Palta, PhD, FAAPM, FASTRO, FACR |
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