Meet Our Physicians
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Hesham E Gayar, MD
Hear from Dr. Gayar
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Dr. Hesham E. Gayar, a board certified radiation oncologist, is the Chairman of the Department of Radiation Oncology at McLaren Flint, as well as Medical Director of McLaren Proton Therapy Center and McLaren Cancer Institute facilities in Flint, Lapeer and Owosso. He also serves as clinical assistant professor in the Department of Radiology at Michigan State University and a RTOG Principal Investigator.
Dr. Gayar has led the radiation oncology program since he joined McLaren in 1990. His efforts have been instrumental in bringing advanced and innovative forms of radiation therapy to McLaren Cancer Institute in Flint, Michigan; including the development of the McLaren Proton Therapy Center. Dr. Gayar completed a fellowship in radiation oncology through Ohio State University, and a residency in radiation oncology through New York University at St. Vincent’s Hospital & Medical Center. He earned his medical degree from Alexandria Medical School in Egypt. His proton therapy education includes training at the Paul Scherrer Institute (PSI) Winter School for Proton Therapy in Switzerland. Dr. Gayar has practice locations at McLaren Cancer Institute in Flint, Lapeer and Owosso.
Dr. Gayar is a member and Past President of the Board of Directors for Genesee County Medical Society. He is a delegate to the Michigan State Medical Society, an American College of Surgeons Liaison Physician, a consultant to the Certificate of Needs Board for the State of Michigan, a board member of the Proton Collaborative Group, and a board member and steering committee member for the Particle Therapy Co-Operative Group.
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W. Edward Naill. M.D.
Hear from Dr. Naill
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Dr. W. Edward Naill is a board certified radiation oncologist at McLaren Cancer Institute Flint, including McLaren Proton Therapy Center. He joined the cancer program in 2008, treating patients at the McLaren Cancer Institute locations in Flint and Lapeer. Dr. Naill has been a radiation oncologist since 1985. His clinical expertise includes utilizing multiple radiation systems including the Varian TrueBeam STx, Clinac 21 iX, and the TomoTherapy linear accelerators. Dr. Naill uses both low dose rate (LDR) and high dose rate (HDR) brachytherapy (internal radiation) applications for gynecological, endobronchial and breast cancers. He completed fellowship in radiation oncology from the University of Wisconsin Hospital and Clinics in Madison. Dr. Naill earned his medical degree from the Medical College of Wisconsin in Milwaukee.
Dr. Naill is an active member of the General Tumor Board multidisciplinary team in Flint and Lapeer. He also participates in the following specialty clinical conferences: Comprehensive Breast Conference, Thoracic Oncology Conference, and Neuro-Oncology Conference.
Dr. Naill is a member of the American Society for Therapeutic Radiology and Oncology; the American Medical Association; Michigan State Society for Therapeutic Radiology and Oncology, and the Michigan State Medical Society.
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Jack Nettleton, MD
Hear from Dr. Nettleton
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Dr. Jack Nettleton is a board certified radiation oncologist at McLaren Cancer Institute, including McLaren Proton Therapy Center. Dr. Nettleton joined McLaren in 1994 and treats patients at both their Flint and Owosso radiation oncology offices. His clinical expertise includes utilizing advanced external beam radiotherapy systems including the Varian TrueBeam STx, Clinac 21 iX, and the TomoTherapy linear accelerators. He also uses brachytherapy (internal radiation) therapies such as low dose rate (LDR) permanent seed implantation and high dose rate (HDR) computer-guided treatment and placement of fiducial marker seeds. In January 2012, Dr. Nettleton completed special training for proton therapy through the Paul Scherrer Institute (PSI) in Switzerland.
Dr. Nettleton holds a medical degree from University of Washington School of Medicine in Seattle and completed residency in radiation oncology through the University of Minnesota Hospital in Minneapolis. He is a member of the American Society for Therapeutic Radiology and Oncology, Genesee County Medical Society, and Michigan State Medical Society.
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Meet Our Physicists
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SungYong Park, Ph.D
Hear from Dr. Park
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Dr. SungYong Park is Chief Physicist in the Department of Radiation Oncology at McLaren. In this position, Dr. Park oversees the operations of the Proton Therapy Center and the cancer program’s existing photon linear accelerators. He comes to McLaren from the National Cancer Center in Korea where, as a chief physicist, he implemented the launch of their proton therapy program. He has developed the first medical physics residency program in Korea. His knowledge and experience in the field has led to his involvement with several prestigious scientific groups including membership in the International Electrotechnical Commission (IEC TC 62C) Working Party on Light Ion Therapy; the American Association of Physicists in Medicine (AAPM) Task Group No. 199; serving as a task group member on Medical Physics Credentialing Board of International Organization for Medical Physics (IOMP), a treasurer of World Congress on Medical Physics and Biomedical Engineering 2006, a committee member of Professional Relation Committee of International Organization for Medical Physics (IOMP), an international relations secretary of Korean Society of Medical Physics (KSMP), a scientific committee chairman of Korean Society of Medical Physics for Radiosurgery (KSMPS), a steering committee member of Particle Therapy Co-Operative Group (PTCOG), and a scientific chair of Particle Therapy Co-operative Group (PTCOG) 2012. Dr. Park has published more than 88 research articles and given more than 44 invited talks. He has also received several research grants and patents. His current research interest includes the Proton Digital Tomosynthesis, the Proton Beam Dosimetry, the Proton Inhomogeneity Correction, and Image Guided Brachytherapy.
Dr. Park received his doctoral degree in Physics from Kyonggi University in Korea. He also holds both a Master of Science in Radiological Physics and a Master of Arts in Physics from Wayne State University in Detroit. He is certified by the Korean Board of Medical Physics (KBMP). He is currently an active member of American Association of Physicists in Medicine (AAPM), American Society for Therapeutic Radiology and Oncology (ASTRO), European Society for Therapeutic Radiology and Oncology (ESTRO), Korean Society of Medical Physics (KSMP) and the International Society for Optics and Photonics (SPIE). |
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Bijan Arjomandy, Ph.D
Hear from Dr. Arjomandy
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Dr. Bijan Arjomandy is the Senior Proton Medical Physicist at McLaren Proton Therapy Center. He joined McLaren in 2011 bringing with him a wealth of experience in proton radiotherapy. Previously, Dr. Arjomandy was one of the lead clinical proton therapy physicists who helped in commissioning and implementing new technologies and concepts at Proton Therapy Center in Houston. He was also an Associate Professor at Loma Linda University Medical Center where he was involved with proton and photon radiotherapy. His work and effort in developing the first comprehensive quality assurance program for proton radiotherapy has been published and utilized by many proton therapy centers. He also developed the first quality assurance procedures using a commercial 2D ionization chamber detector for patients who are treated with proton radiotherapy. He has actively been training medical physicists, medical dosimetrists and physicians about proton radiotherapy. The primary focus of his research interest is related to the accurate dose delivery and dose verifications, and employment of new technology for tumor tracking and accurate delivery of dose to tumors in motion.
Dr. Arjomandy holds a Ph.D. in Physics form University of Arizona. He is certified by the American Board of Radiology and a member of American Association of Physicists in Medicine (AAPM). He is currently an active member of Task Groups (TG) at AAPM and the Chairman of TG (AAPM) on Quality Assurance of Proton Therapy Machines.
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Terrence J. Dillon, M.S.
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Terrence J. Dillon, M.S., is a senior clinical physicist at McLaren Cancer Institute. He has worked in radiological physics since 1983 and been with McLaren Cancer Institute since 2007. Dillon focuses on the operation of both internal and external photon radiation treatment. His work includes ensuring the precision and safety of the patient’s external beam, and high dose rate brachytherapy treatment delivery at McLaren. Dillon holds a Master of Science in Radiological Physics from Wayne State University in Detroit.
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Art Ewald, MS
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Art Ewald has held the position of Senior Medical Physicist at McLaren Cancer Institute, including McLaren Proton Therapy Center, since 2002. His special interests include working in Special Procedures, Brachytherapy, and Radiation Safety. He has served as a Radiation Safety Officer for 12 years. Mr. Ewald holds dual board certification through the American Board of Radiology in both Therapeutic Radiological Physics and Diagnostic Radiological Physics. Prior to joining McLaren, Mr. Ewald was responsible for the physics within the Nuclear Medicine and Diagnostic Radiology Departments. He also has experience treating pediatric patients in radiation oncology at the University of Michigan.
He holds a Master of Science in Radiological Physics from Wayne State University in Detroit, Michigan and is an active member in both the American Association of Physics in Medicine, and the Health Physics Society.
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TaeKyu Lee, Ph.D
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Dr. TaeKyu Lee is a Senior Medical Physicist at McLaren Proton Therapy Center. Most recently, he was a proton physicist at Hampton University Proton Therapy Institute (HUPTI) where he held a lead role in the acceptance tests and commissioning of the proton therapy system, configuration of proton treatment planning system, and initiation of quality assurance (QA) protocols for the readiness for patient treatment, etc. Dr. Lee is experienced in developing in-house software systems to streamline proton commissioning and QA processes at high accuracy, has developed several proton clinical research projects including proton dose modeling and respiratory gating in proton therapy, and has also developed a computer software tool that evaluates treatment plans with physical and biological metrics.
Dr. Lee served as associate director of the medical physics program at Hampton University where he developed and prepared the program for CAMPEP accreditation.
His current clinical research interest includes respiratory gated proton therapy, lung tumor motion estimation for tumor-tracking during proton beam delivery, radiobiological proton plan evaluation tool development, and proton dose modeling.
Dr. Tae Kyu Lee received his Ph.D. in Medical Physics at Purdue University and he is an active member of American Association of Physicists in Medicine (AAPM).
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Travis Schultz, MS
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Travis Schultz has held the position of Medical Physicist at McLaren Cancer Institute, including McLaren Proton Therapy Center, since 2009. His special interests include working in Emerging Technologies in Medical Physics, Adaptive Radiotherapy, Stereotactic Radiation Therapy, Applications of Information Technology in Radiation Oncology Physics, and good coffees!
He holds a Master of Science in Radiological Physics from Wayne State University in Detroit, and a Master of Information Systems from Lawrence Tech University in Southfield, Michigan.
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Vijeshwar Sharma, MS DABR (USA), C.Phys. (UK) |
Mr. Vijeshwar Sharma is a Senior Medical Physicist at McLaren Cancer Institute Flint, including McLaren Proton Therapy Center. His special interests include Intensity Modulated Radiation Therapy, Linear Accelerator Room Shielding Design and Commissioning, High Dose Rate Brachytherapy, and Computerized Treatment Planning Systems. With over 30 years experience as a Clinical radiation oncology physicist, he has worked for cancer treatment centers in India, United Arab Emirates, Canada and the United States. Mr. Sharma has commissioned several treatment accelerators and planning systems including the True Beam STx, 21 Ix, 21 EX Linear accelerators and Eclipse treatment planning system for McLaren Flint.
He has served as a Medical Physics Expert to the International Atomic Energy Agency in Vienna, Austria in the Department of Radiotherapy and Biology. He received his post graduate degree in Radiological Physics from Bhabha Atomic Research Center, University of Bombay, India and a Master of Science in Radiological physics from Wayne State University, School of Medicine in Detroit, Michigan.
He is certified by the American Board of Radiology in the United States and a certified Chartered Physicist from the Institute of Physics in the United Kingdom.
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Nick Stanley |
Nick Stanley has been with McLaren Cancer Institute since Jan 2012. Previously, he worked as a radiation equipment technician at University Medical Center in Tucson, AZ, and most recently held a radiation oncology research position at Henry Ford Health in Detroit. His research focus was in the field of deformable image registration and adaptive radiotherapy.
Nick received his Masters degree in medical physics from The University of Arizona. He is currently pursuing a Ph.D. in the field of medical physics at Wayne State University.
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Meet Our Physician Assistant
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Dennis Wallace, PA-C
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Dennis Wallace, a certified physician assistant, joined McLaren Cancer Institute in 2008. Mr. Wallace provides skilled and compassionate care to patients currently under radiation treatment for various types of cancer at both the McLaren Cancer Institute in Flint and at the Owosso location. His scope of care includes meeting with patients for new consults, participating in some early phase treatment planning, checking films for current patients, inpatient hospital consultation, and post treatment evaluations. Mr. Wallace completed the Physician Assistant Program through Western Michigan University in Kalamazoo, receiving a Bachelor of Science in Medicine. He also holds a Bachelor of Business Administration through the University of Michigan-Flint. He has been in practice as a physician assistant in the Genesee County area since 1993.
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