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).

Aaron graduated from the University of Kentucky with a BS in Physics, BA in Music, and MS in Radiological Medical Physics. He received his board certification in Therapeutic Medical Physics in 2016 from the American Board of Radiology (ABR). Prior to joining the Alyzen team in 2015, he completed the CAMPEP residency program at the University of Kentucky. Aaron currently serves as a Clinical Medical Physicist in Fort Smith, Arkansas, and Regional Director. Additionally, he is an Assistant Director of Alyzen's medical physics residency program in affiliation with the University of Kentucky and is a member of the American Association of Physicists in Medicine (AAPM).

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 Lead Dosimetrist for the dosimetry department. Amanda specializes in VMAT prostate planning, organization, and project management.

Barry holds a BS in Physics from Arkansas State University, BS in Medical Dosimetry from University of Arkansas for Medical Sciences, and a MS in Applied Mathematics from the University of Arkansas in Little Rock. He is currently pursuing a MS in Physics from Texas A&M University. He joined the Alyzen team 8 years ago and has continued providing medical dosimetry services throughout his tenure. Previous to this, Barry spent 5 years working as a dosimetrist at OU Health Sciences Center. He is currently providing medical dosimetry services at a clinic in Fort Smith, Arkansas, and is a member of the American Association of Medical Dosimetrists (AAMD).

Caleb attended Southern Illinois University-Carbondale where he received a BS in Radiologic Sciences and MS in Medical Dosimetry. Prior to joining the Alyzen team, he worked as a radiation therapist in Tulsa, Oklahoma, for six years while assisting physics staff with quality analysis and machine testing. Caleb currently serves as a medical dosimetrist and is a member of MDCB, ARRT, ASRT, and AAMD.

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).

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.

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 Director of Finance and Human Resources. Additionally, she is a member of the Society for Radiation Oncology Administrators (SROA).

Eric brings over 20 years of experience in the radiation oncology field to the Alyzen team. He attended Concord University prior to enlisting in the US Army where he held a Top Secret security clearance and specialized in electronic repair of Cryptographic equipment for 15 years. After completing his military service, he transitioned into a career with IBA Dosimetry where he served for 21 years performing service on equipment, providing product support, and holding positions as an Area Sales Manager, Commissioning Services Manager, and Business Development Manager. Eric is currently a Physics Services Specialist with Alyzen and specializes in the commissioning of linear accelerators.

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 specializes in Therapy 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.

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.

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.

Sherry received a BS in Radiological Sciences from the University of Alabama-Birmingham and a BS in Medical Dosimetry from Radiological Technologies University. She brings over 18 year of experience as a Radiation Therapist to the Alyzen team including seven years of locum tenens experience. She is a board certified medical dosimetrist through MCDB and is an ARRT registered radiation therapist. Sherry currently serves as a certified medical dosimetrist at Saint Mary’s Cancer Center in Russellville, Arkansas, and is a member of ARRT, MCDB and AAMD.

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). She is currently the lead physicist at the Arkansas Prostate Cancer Center in Little Rock, Arkansas and at Texas Cancer Specialists in Fort Worth, Texas.

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 Alzyen 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. Zac is a member of the American Association of Physicists in Medicine (AAPM).

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. Stephanie is a member of the American Association of Physicists in Medicine (AAPM).