Meet Our Team

Mark has an impressive list of qualifications and certifications in the field and has even shared his passion through teaching. He specializes in the areas of external beam, electron, and intracavitary brachytherapy treatment planning in dosimetry. His expertise also lies in machine QA. He studied Medical Physics and obtained MS degrees from the University of Kentucky and Florida State, and has a B.S. from Western Kentucky University. Mark is a qualified expert as recognized by the states of Arkansas and Tennessee and the Nuclear Regulatory Commission (NRC).

Amanda received an A.S. in Radiological Sciences from Southwest TN Community College in 2006. She went on to receive a B.S. in Radiation Therapy from Arkansas State University in 2008 and then an M.S. in Medical Dosimetry from Southern Illinois University in 2009. Her career began with Mid-South Radiation physics as a medical dosimetrist, servicing the Arkansas Prostate Cancer Center in Little Rock. She became a Certified Medical Dosimetrist in the Spring of 2010 and is a member of the American Association of Medical Dosimetrist (AAMD). While employed with Alyzen, Amanda has continued to service the AR Prostate Cancer Center and has been a part of the PTO coverage team. Additionally, she is the Director of Dosimetry for the dosimetry department. Amanda specializes in VMAT prostate planning, organization, and project management.

Angie graduated with a BS in Physics with Engineering from University of West Florida and an MS in Medical Physics from Georgia Tech. She joined the Alyzen team in 2016 as a full-time physicist in Wichita, Kansas at a stand-alone clinic. She is also part of the Alyzen Commission team. Angie is board certified by the American Board of Radiology in Therapeutic Medical Physics and a member of the AAPM.

Betsy received a BS degree in Biomedical Engineering from Rensselaer Polytechnic Institute in Troy, New York, and an MS degree in Medical Physics from Rosalind Franklin University of Medicine and Science. After graduation, she worked for six years in Maryland and seven years in New Jersey before joining the Alyzen team in 2021. Betsy holds a temporary medical physics license in the state of Texas and provides physics services in Fort Worth and Decatur, Texas. She is a member of the American Association of Physicists in Medicine (AAPM) and Southwest Regional Chapter (SWAAPM) and is pursuing board certification in medical physics.

Bobby received a BS degree in Advanced Mathematics and Physics from University of Arkansas in Little Rock, a MS degree in Medical Physics at Louisiana State University, and completed a Medical Physics Residency at CARTI in Little Rock, AR. He joined the Alyzen team in 2021 after his 10 years at CARTI. Bobby is board certified by the American Board of Radiology in Therapeutic Radiation Physics, a member of the American Association of Physicists in Medicine (AAPM), and is active in the Southwest Regional Chapter (SWAAPM).

Daniel graduated with a BS in Psychology and minor in Business Management from Arkansas State University. Prior to joining the Alyzen team, he served as a federal officer where he held a Top Secret clearance and specialized in federal criminal investigations, special operations, and firearms and tactical instruction. He brings over 16 years of experience to Alyzen in operations management, strategic planning, and staff professional development. Daniel currently serves as the Director of Marketing and Operations and is a member of the Society for Radiation Oncology Administrators (SROA).

Dan earned a BS in Engineering-Physics from Jacksonville University and a MS in medical physics from the University of Florida. Following graduation, he worked for four years as a medical physicist in Florida and two years as a product training physicist for Sun Nuclear before joining Alyzen in 2020. Dan provides physics services in Fort Smith and Russellville, AR. Dan is a member of the American Association of Physicists in Medicine (AAPM) and is pursuing board certification in medical physics.

Eleanor graduated from the University of Arkansas with a Bachelor of Science in Nursing. She began her career as a registered nurse working in multiple hospitals in both Arkansas and New York. She went on to become a certified research nurse. Eleanor joined the Alyzen team in 2017 and currently serves as the Physics Services Coordinator. Additionally, she is a member of the Society for Radiation Oncology Administrators (SROA).

Erik received a BS in Computer Science from Arkansas State University. His postgraduate coursework and papers focused on high performance computing. After joining the Alyzen team as a software developer, he was directly responsible for the successful development of software solutions that aid medical physicists in annual and monthly QA as well as drastically reducing the time it takes to commission a linear accelerator while increasing the validation of commissioning data. Erik currently serves as the Director of Technology and head of R&D.

James graduated from Whitworth University with a BS in Engineering-Physics and received an MS in Radiological Medical Physics from the University of Kentucky. He was the first graduate of Alyzen’s residency program in association with the University of Kentucky. Upon James’ completion of the residency program, he came on board the Alyzen Team as a full time medical physicist in Fort Smith, Arkansas. James is board certified by the American Board of Radiology in Therapeutic Radiological Physics and is a member of the American Association of Physicists in Medicine (AAPM).

Jeff holds a BS in Physics from Western Kentucky University and joined the Alyzen physics team in 2003. He also worked in Jackson, MS, before returning to Alyzen. He is a Qualified Expert in the state of Missouri and works with our clinic in Poplar Bluff, MO. His many years of experience in conventional and stereotactic radiation therapy make Jeff a valuable asset to the Alyzen team.

Jim received a B.S. in Physics from Western Kentucky University and an M.S. in Medical Physics from the University of Wisconsin. His medical physics career began in 1992 in Omaha Nebraska, and he worked at the same hospital for 22 years, the last 14 as the Chief of the Medical Physics department. In 2014, he joined the Alyzen team and provides medical physics coverage mainly in the Little Rock and Russellville Arkansas clinics. Jim has been Board certified in Radiation Oncology Physics from American Board of Medical Physics since 1996. He is a member of American Association of Physicists in Medicine.

Joel received a BS in Radiation Therapy from Grand Valley State University and a MS in Medical Dosimetry from Southern Illinois University. He started in the field as a radiation therapist in 2009 and a dosimetrist in 2015. He joined the Alyzen team in 2020 as a full-time medical dosimetrist in Texas.

Kevin received a BS in Physics with a minor in Mathematics and a MS in Physical Science with an Emphasis in Physics from Emporia State University. He received his Doctorate of Philosophy in Nuclear Engineering with a Concentration in Medical Physics at the University of Missouri- Columbia. He completed his Medical Physics Residency through Rutgers Cancer Institute of New Jersey in 2018. Kevin joined the Alyzen team in 2018 as a full-time physicist in Wichita, KS. He is board certified by the American Board of Radiology in Therapeutic Medical Physics.

Kristi received a BS in Radiologic Sciences from Arkansas State University and a certificate in Medical Dosimetry from Central Arkansas Radiation Therapy Institute (CARTI). After graduating from Medical Dosimetry school, Kristi joined Alyzen as a Certified Medical Dosimetrist in 2002. Kristi is certified by the Medical Dosimetrist Certification Board and is also a Registered Radiographer and Radiation Therapist. She is a member of the American Association of Medical Dosimetrists, where she is currently on the Board of Directors as the Regional Director. She has also served on the Board of Directors as the Member-At-Large and chaired many national and regional meetings.

Lee received a BS in Communication and Business from the University of Buffalo in 2004. Prior to Radiation Oncology, Lee had a career, and managed a department, in fraud detection and prevention for the third largest bank in the world. He returned to school, earned his Radiation Therapy license and then Masters in Dosimetry from the University of Wisconsin in 2014. He joined the Alyzen team in 2021 after starting his career in RadOnc at the Ohio State University. Currently, Lee is covering sites within the Alyzen Dosimetry network, and uptraining to be on the commissioning team for RapidPlan. Lee is passionate about the field of Dosimetry and strives to excel in all aspects. He is a member of American Association of Medical Dosimetrists and currently serves on numerous committees, having chaired the 2021 46th Annual AAMD National Meeting.

Lee Graduated with a Doctorate in Occupational Therapy with a concentration in Healthcare Policy, Procedures and Leadership from Arkansas State University. Prior to joining the Apex/Alyzen team, he worked as an acute care/inpatient rehabilitation occupational therapist at NEA Baptist Memorial Hospital. He brings 7 years of management experience in professional development, staff training and conflict resolution. Lee currently serves as the Regional Account Services Manager.

Madison received her Bachelor of Science degree in Medical Dosimetry from The University of Arkansas for Medical Sciences in 2012. She became certified by the Medical Dosimetry Certified Board shortly after graduation. Madison is a new member of the Alyzen Medical Physics team, joining in the summer of 2021. Prior to working for Alyzen, she started her career at Jeff Anderson Regional Cancer Center in Meridian, MS and then spent the majority of the last decade working for West Cancer Center in Memphis, TN. While employed with Alyzen, Madison is providing medical dosimetry service to Baptist Health Cancer Center-Fort Smith, Saint Mary’s Regional Cancer Center and Arkansas Prostate Center. Madison is passionate about her profession and enjoys advocating for the medical dosimetry community. She is a member of American Association of Medical Dosimetrists, where she has chaired many national and regional meetings and co-chaired the Advocacy Subgroup of the MedDos Infinity Task Group.

McKenzie received a BS in Biology and Chemistry from Arkansas State University and an Advanced Certificate in Medical Dosimetry from University of Arkansas Medical Sciences (UAMS). After graduating from Medical Dosimetry school, McKenzie joined Alyzen as a Certified Medical Dosimetrist in 2013. McKenzie is certified by the Medical Dosimetrist Certification Board, and she is a member of the American Association of Medical Dosimetrist. McKenzie is the primary dosimetrist at Danny Bell Cancer Treatment Center in Poplar Bluff, MO.

Melanie received her Associates degree in Radiologic Sciences from Virginia Western Community College in 1997. She went on to receive a BS in Radiologic Sciences with a concentration in Radiation Therapy from The College of Health Sciences in 2000. She then proceeded to do on the job training for Dosimetry in 2005. Melanie joined the Alyzen team in October of 2021. Prior to Alyzen, she worked at Novant Health.

Michelle received a B.S. in Applied Physics from Stevens Institute of Technology and an M.S. in Medical Physics from Columbia University. She completed her residency in therapeutic medical physics at Montefiore Medical Center in the Bronx, NYC to which shortly after she joined the medical physics team at Memorial Sloan Kettering Cancer Center in Manhattan for 3 years. She has recently joined Alyzen in 2022 and provides medical physics coverage for radiation oncology clinics in Texas in addition to providing coverage nationwide. Michelle is board certified by the American Board of Radiology in Therapeutic Radiation Physics and holds a medical physics license in the state of Texas and New York. She is also a member of the American Association of Physicists in Medicine (AAPM).

Ryan received both a BS in Physics and an MS in Medical Physics from the University of Kentucky in Lexington, Kentucky. He joined the Alyzen team in July of 2021 to begin his two year residency. Ryan is a member of the American Associate of Physics in Medicine (AAPM.)

Spencer received a BS in Computer Science from Arkansas State University. During his time there, he published several academic papers on topics such as High Performance Computing, Big Data, and Encryption. He has over a decade of experience in software development. Spencer joined the Alyzen team in 2016. For Alyzen, he is a full stack software engineer utilizing technologies ranging from React and .Net to Kubernetes and Microservices.

Stephanie received a B.S. in Nuclear Engineering from the University of Wisconsin – Madison and an M.S. in Medical Radiation Physics from Rosalind Franklin University of Medicine and Science. She completed her residency at CARTI in Little Rock, Arkansas, and joined the medical physics staff there upon graduation. Since joining Alyzen, she has provided medical physics coverage for radiation oncology clinics in Arkansas and Texas in addition to performing linear accelerator and treatment planning system commissioning services nationwide. Stephanie is board certified by the American Board of Radiology in Therapeutic Radiation Physics and holds a medical physicist license in the state of Texas. She is an active member of the Southwest chapter of the American Association of Physicists in Medicine (AAPM) as well as Medical Physics for World Benefit (MPWB).

Stephanie received a BA in Applied Physics from the College of Saint Benedict in Saint Joseph, MN, and a MS in Applied Physics from the University of Kentucky. Stephanie joined the Alyzen team in 2020 to begin her two year residency. Prior to her Alyzen residency, she interned with Northwest Physics in Washington. After completion of her residency, she joined Alyzen as a full time Medical Physicist in 2022. Stephanie is a member of the American Association of Physicists in Medicine (AAPM).

Tom earned his BS and MS in Physics from the University of South Dakota. Following graduation he completed his MS in Medical Physics at the University of Kentucky. Tom joined Alyzen in 2020 for his residency and has since joined Alyzen full time as a Medical Physicist. Tom is a member of the American Association of Physicist in Medicine (AAPM).

William holds a BS in Physics from Arkansas State University and an MS in Medical Physics from Vanderbilt University. His career began at Methodist Hospital in Memphis, TN, as a junior physicist and certified medical dosimetrist. He joined the Alyzen team in 1999 and has also worked as locum tenens in Connecticut, Illinois, and Georgia. As the physics instructor for the radiation therapy program at Arkansas State University, William is involved in the training of radiation therapists. Additionally, he heads the Alyzen physics residency program, an affiliate of the University of Kentucky. He is board certified by the American Board of Radiology in Therapeutic Radiological Physics and is a member of the American Association of Physicists in Medicine (AAPM). William is the primary physicist at St. Bernards Medical Center in Jonesboro, Arkansas, and participates as a member of the commissioning team.

Zac received a BS in Physics from Arkansas State University in Jonesboro, AR, and a MS in Medical Physics from the University of Kentucky. Zac joined the Alyzen team in 2019 to begin his two year residency. After completion of his residency, he joined Alyzen as a full time Medical Physicist in 2021. Zac is a member of the American Association of Physicists in Medicine (AAPM).