Our Staff
Executive Team
![Thomas J. Petrone, PhD, DABR, DABMP](https://petroneassoc.com/wp-content/uploads/Thomas_Petrone_new_1.jpg)
Thomas J. Petrone, PhD, DABR, DABMP
Chief Executive Officer and Chief Medical Physicist
![Christopher Smitherman, MS, DABR, DABSNM](https://petroneassoc.com/wp-content/uploads/Christopher_Smitherman-2.jpg)
Christopher Smitherman, MS, DABR, DABSNM
Chief Technical Officer and Director of Diagnostic Physics
Management Team
![Maria G. Petrone](https://petroneassoc.com/wp-content/uploads/Maria_Petrone-2.jpg)
Maria G. Petrone
Director of Wellness and Environmental Efficiency
![Alexander Petrone, MBA](https://petroneassoc.com/wp-content/uploads/Alexander_Petrone-2.jpg)
Alexander Petrone, MBA
Operations and Business Development Manager
![Joseph Giardina, MS, DABSNM](https://petroneassoc.com/wp-content/uploads/Joseph_Giardina-2.jpg)
Joseph Giardina, MS, DABSNM
Director of Nuclear, Health Physics and Radiation Safety
![Samantha Bunsee](https://petroneassoc.com/wp-content/uploads/Samantha_Bunsee-2.jpg)
Samantha Bunsee
Medical Physics Program Coordinator
Technical Staff
![Galina Desyatnik, PhD](https://petroneassoc.com/wp-content/uploads/Galina_Desyatnik-2.jpg)
Galina Desyatnik, PhD
Senior Medical Physicist and Radiation Safety Officer
![Simon Murphy, MS, DABR](https://petroneassoc.com/wp-content/uploads/Simon_Murphy_2.jpg)
Simon Murphy, MS, DABR
Regional Compliance Director and Senior Medical Physicist
![Andrew Petrone, MS](https://petroneassoc.com/wp-content/uploads/Andrew_Petrone-2.jpg)
Andrew Petrone, MS
Associate Physicist
![Alena Roytlender, MS](https://petroneassoc.com/wp-content/uploads/Alena_Roytlender-2.jpg)
Alena Roytlender, MS
Regional Compliance Director and Senior Medical Physicist
![Elizabeth Hawkins, CMD](https://petroneassoc.com/wp-content/uploads/Lisa_Hawkins-2.jpg)
Elizabeth Hawkins, CMD
Certified Medical Dosimetrist
![Ryan Joseph, MS, DABR](https://petroneassoc.com/wp-content/uploads/Ryan-Joseph-01-2.jpg)
Ryan Joseph, MS, DABR
Senior Radiation Oncology Physicist
![Chelsea M. Fleet, MS, DABR](https://petroneassoc.com/wp-content/uploads/Chelsea-Fleet-13-2.jpg)
Chelsea M. Fleet, MS, DABR
Radiation Oncology Medical Physicist
![Rebecca DiTusa, MS](https://petroneassoc.com/wp-content/uploads/Rebecca-DiTusa-18-2.jpg)
Rebecca DiTusa, MS
Medical Physicist
![Brian Hurley, MS](https://petroneassoc.com/wp-content/uploads/Brian-Hurley-13-2.jpg)
Brian Hurley, MS
Medical Physicist – Diagnostic Imaging
![Lucas Hockley, BS](https://petroneassoc.com/wp-content/uploads/Lucas_Hockley-2.jpg)
Lucas Hockley, BS
Quality Control Engineer
![Michelle Fernandez, BS, ARRT(N)](https://petroneassoc.com/wp-content/uploads/Michelle_Fernandez-2.jpg)
Michelle Fernandez, BS, ARRT(N)
Medical Physics Resident - Diagnostic Imaging
![Sara Lin](https://petroneassoc.com/wp-content/uploads/Sara-Lin-09-2.jpg)
Sara Lin
Medical Physics Resident – Diagnostic Imaging
![Andreani Mouzourou, MS](https://petroneassoc.com/wp-content/uploads/Andreani-Mouzourou-05-2.jpg)
Andreani Mouzourou, MS
Associate Health and Medical Physicist
![Cynthia Augustin](https://petroneassoc.com/wp-content/uploads/Cynthia-Augustin-01-2.jpg)
Cynthia Augustin
QC Specialist
![Karen Mak-Dumornay](https://petroneassoc.com/wp-content/uploads/Karen-Dumornay-17-2.jpg)
Karen Mak-Dumornay
QC Specialist
![Michael Sarnelli](https://petroneassoc.com/wp-content/uploads/Michael-Sarnelli-05-2.jpg)
Michael Sarnelli
QC Specialist
![Tiffany Lin, MS, DABR](https://petroneassoc.com/wp-content/uploads/Tiffany_Lin-2.jpg)
Tiffany Lin, MS, DABR
Senior Medical Physicist
![Albert Sabbas, PhD, DABR](https://petroneassoc.com/wp-content/uploads/Albert-head-shot.jpg)
Albert Sabbas, PhD, DABR
Senior Medical Physicist
![Maxine Barnes, MS, DABR](https://petroneassoc.com/wp-content/uploads/petrone-placeholder.png)
Maxine Barnes, MS, DABR
Senior Medical Physicist
![Rich Kuo, MS, DABR](https://petroneassoc.com/wp-content/uploads/petrone-placeholder.png)
Rich Kuo, MS, DABR
Senior Medical Physicist
![Wayne Benjamin, MS, DABR](https://petroneassoc.com/wp-content/uploads/petrone-placeholder.png)
Wayne Benjamin, MS, DABR
Senior Medical Physicist
Administrative Staff
![Helen Russo](https://petroneassoc.com/wp-content/uploads/Helen_Russo-2.jpg)
Helen Russo
Assistant – Nuclear, Health and Radiation Oncology Physics
![Suzy Harding](https://petroneassoc.com/wp-content/uploads/Suzanne_Harding-2.jpg)
Suzy Harding
Assistant – Diagnostic Imaging Medical Physics
Associate Technical Staff
Michael Woolley, BS, CMD
Certified Medical Dosimetrist
Glen Naekel, MS, DABR
Senior Medical Physicist
John Sakellakis, MS, DABR
Senior Medical Physicist
Arthur Olson, PhD, DABR
Senior Medical Physicist
Larry Rothenberg, PhD, DABR
Senior Medical Physicist
Pat Zanzonico, PhD, DABR
Senior Medical Physicist
Kenneth Kopecky, PhD, DABR
Senior Medical Physicist
James Eisenbarth, MS, DABR
Senior Medical Physicist
Coleman Rosen, MS, DABR
Senior Medical Physicist