The Ackerman Advantage

At Ackerman Cancer Center, patients can feel confident in the expertise and compassion of our care team. We provide a range of advanced radiation treatments, including conventional radiation therapy and proton therapy, a highly precise option designed to reduce side effects and improve quality of life.

Our commitment to care extends well beyond treatment. We work in partnership with referring physicians and other specialists to deliver comprehensive care. Most importantly, we build lasting relationships with our patients and continue to support their health and well-being throughout every stage of their journey.

We are proud to offer Accelerated Partial Breast Irradiation (APBI), Electron Therapy, Medical Linear Accelerators, External Beam Radiation Therapy, GammaTile, High Dose Rate Brachytherapy, Intensity Modulated Radiation Therapy (IMRT), Image Guided Radiation Therapy (IGRT), I-131 Therapy, Proton Therapy, Stereotactic Ablative Radiotherapy (SABR), Stereotactic Body Radiation Therapy (SBRT), Stereotactic Radiosurgery (SRS), and Volumetric Modulated Arc Therapy (VMAT).

Leaders in Proton Therapy

Ackerman Cancer Center is the world’s first private practice offering proton beam technology. Our board-certified radiation oncologists use this advanced technology to precisely target tumors, minimizing side effects and limiting radiation exposure to surrounding healthy tissue. Click below to read about the proven benefits of proton therapy.

Precise Prostate Cancer Care

A prostate cancer diagnosis requires a dedicated team and access to the most advanced treatment options, including proton therapy. At Ackerman Cancer Center, we provide comprehensive screening, diagnostic, and treatment services to ensure each patient receives the highest level of personalized care.

Dr. Jyoti with a patient

Ensuring Access to Quality Cancer Care

At Ackerman Cancer Center, financial well-being is an essential part of our whole-patient care approach. Our financial resource coordinators and oncology social workers are here to guide you through insurance coverage, cost planning, and available support options through the Ackerman Cancer Foundation. We accept 99% of all insurance plans and are committed to helping you access the care you need.

2025 Awards

We are proud and honored to be recognized by our community.

Ranked among the top three cancer treatment centers in Jacksonville, driven by exceptional Google reviews from grateful patients.

Awarded the Best of Florida distinction in the top Physician Practice category, reflecting votes from patients and referring providers.

Vice President of Operations, Gigi Ackerman Schwartz, MBA, named top 40 Under 40 leader

Clinic Manager Vivienne Bennett, MS, RT (R) (M) received the Sister de Sales Award for Outstanding Practice Administrator

Ackerman Cancer Center, Amelia Island, is honored to be recognized as the 2025 Health & Wellness Business of the Year by the Nassau County Chamber of Commerce. This award reflects our team’s commitment to providing exceptional cancer care, advancing wellness in our community, and supporting every patient with compassion and excellence.

Hear from our patients

Judith Lento
Judith Lento
I want to sincerely thank everyone at Ackerman Cancer Center. From the very first day, you surrounded me with compassion, kindness, and expert care. Every doctor, nurse, and staff member went above and beyond, not only treating me as a patient but truly caring for me as a person. I will always be grateful for the warmth and dedication you’ve shown — you made a difficult journey so much easier, and I will never forget it.
Kelly Wright
My husband and I absolutely LOVE EVERYONE at Ackerman’s. There’s not a single person on staff that we’ve encountered being anything but extremely helpful, professional, kind, and caring!
Even though we don’t like having the NEED to visit the center on San Jose Blvd, we really enjoy going to see each of them. But Dr Stroud is our absolute favorite doctor, he’s always treated us like family and has become part of our life journey that we are truly grateful for. They all make having to deal with cancer not so bad and I’ve gotta say I’m really glad I was able to be treated at Ackerman’s.
Ira Wittenstein
Excellent staff and medical personnel!
Ray Minor
Dr. Ackerman, and all of his staff, are the best! Always professional, and always positive and just nice. Cancer is scary, but they make it a little easier to get through. Thanks to everyone there!
Steve C
I have known and recommended Dr. Ackerman for over thirty years. He is knowledgeable, professional, and his staff reflects his level of friendliness and professionalism. I am a retired medical professional and have been involved with most of the top cancer centers in the United States over many decades and have always told people that if I ever developed cancer and needed one person to save my life, it would be Dr. Ackerman.
Tim
I'm a 62 year old 6-year cancer survivor using Ackermann now for 3 years. The Doctors, nurses, and staff here are top notch in knowledge and empathy. The equipment and facility are well maintained and professionally operated, even including coffee and cookies after appointments 🙂 ...nice if you've been fasting. Centrally located near the South Loop and San Jose Blvd.
Mike Miller
Dr. Ackerman and his staff are extremely professional and caring. Dr. Ackerman spends as much time as needed to explain thoroughly my medical situation and the options I have to address that condition. I find Dr. Ackerman one of the finest patient service providers I've ever experienced. I feel fortunate to have him on my medical team.

Ackerman Cancer Blog

Welcome to the new homepage of Ackerman Cancer Center.

Achieving total patient care means also taking care of ourselves - in this case, our website! We're proud to present our new online home, created in partnership with High Note Web Design.

Headshot Arlean Marcellus

Arlean Marcellus, BS

Physician Liaison

Arlean Marcellus joined Ackerman Cancer Center in March 2023 and leads physician outreach. She builds and strengthens meaningful partnerships with referring physicians, healthcare facilities, and medical groups, driving growth in patient referrals. Arlean holds a degree in Health Science with a concentration in Public Health from the University of North Florida. Beyond her work, she volunteers with Feeding Northeast Florida. In her free time, Arlean enjoys running, roller skating, and spending time with her family.
Headshot Shelby Goodman

Shelby Goodman, MSW

Oncology Social Worker

Shelby Goodman joined the Ackerman Cancer Center team in January 2023 as the oncology social worker. She earned her bachelor’s and master’s degrees in social work from the University of North Florida and went on to become a licensed clinical social worker (LCSW). With over five years of experience supporting individuals and families in the social work field, her practice focuses on psychosocial support, care coordination, and advocacy to enhance the quality of life for patients and their loved ones. Shelby is a member of the Florida Society of Oncology Social Workers (FSOSW). In her free time, she enjoys reading and spending time with her family and dog.
Headshot Kali Molter

Kali Molter, MBA

Community Relations Specialist

Kali Molter joined Ackerman Cancer Center in August 2024 and supports community outreach, marketing initiatives, and engagement efforts. She holds both a Master of Business Administration and a Bachelor of Business Administration in marketing from the University of North Florida. A Jacksonville native and Bishop Kenny alum, Kali is passionate about contributing to and strengthening the local community. She brings experience in hospitality and event management and serves on the Jacksonville Chamber’s NEXTUP JAX Professional Development and Community Engagement committees. Outside of work, Kali enjoys living at the beach, running and yoga, traveling, and is a lifelong Jacksonville Jaguars fan.

Ceilidgh O'Brien, BS

Patient Relations Manager

Ceilidgh O’Brien is the patient relations manager at Ackerman Cancer Center, where she leads the patient relations team and helps ensure every patient experience is organized, supportive, and welcoming. She oversees scheduling and communications and is passionate about creating efficient processes that help patients and staff feel informed, supported, and cared for. Ceilidgh earned a Bachelor of Science in health sciences from the University of South Florida in 2024 and values building strong, compassionate connections with both patients and colleagues. A Boston native, Ceilidgh traded snow for sunshine and now spends her free time running with friends and supporting the Jacksonville Humane Society.
Headshot Tiffany Vaughn

Tiffany Vaughn, RT (R)(T)

Manager, Radiation Therapy & Imaging

Tiffany Vaughn brings extensive experience and steady leadership to Ackerman Cancer Center, with 24 years of service to the practice. For the past 15 years, she has served in leadership roles, overseeing both radiation therapy and imaging departments with a focus on quality care, collaboration, and operational excellence. Tiffany is a proud member of the American Society of Radiologic Technologists and the American Registry of Radiologic Technologists. She earned her technologist degree from St. Vincent's Medical Center and completed radiation therapy training from Washburn University. Outside of work, Tiffany enjoys spending time with her family, relaxing in or around the water, and taking on hands-on projects around her home.
Vivienne Burnett Headshot

Vivienne Bennett, MS, RT(R)(M)​

Clinic Manager

Vivienne Bennett joined Ackerman Cancer Center in November 2013 as a mammography technologist and was promoted in 2021 to oncology clinic manager, overseeing clinical operations across all four locations. She provides leadership for daily clinic operations, supports multidisciplinary oncology teams, ensures regulatory and accreditation compliance, and implements operational strategies to improve quality, safety, and patient experience. Vivienne holds a master’s degree in medical radiation sciences from the University of Sydney in Australia and is a member of the American Registry of Radiologic Technologists (ARRT). Outside of work, she enjoys watching sports, walking, and spending time with friends and family.
Headshot Timothy Scott

Timothy Scott, RTR, RTT, CMD

Manager, Dosimetry, Facilities, & Research

Tim Scott joined Ackerman Cancer Center in 2003 and brings nearly 40 years of experience in radiation oncology and medical dosimetry operations. He oversees medical dosimetry, facilities, special projects, and research and has played a key role in nearly every building project and major technology launch at the center. Tim is passionate about innovation and the development, construction, and commissioning of advanced treatment technologies, including proton therapy. Beyond his professional work, Tim serves as a worship pastor and is a brass musician. In his free time, he enjoys restoring classic cars and spending time on the lake.
Headshot Grigoriy Sarkisov

Greg Sarkisov, BS

Director of Information Technology

Greg Sarkisov joined Ackerman Cancer Center in September 2019 and oversees all facets of information technology and information security within the organization. Greg has over twenty years of experience in information technology and security. With over six of those years in our practice, he has led initiatives to strengthen our core security and expand the use of various technologies to help aid our staff in providing effective and efficient patient care. Greg holds a Bachelor of Science degree in information systems security from ITT Technical Institute. Outside of work, he stays active in the community and is a member of the IT Council with the Jacksonville Chamber of Commerce. In his free time, Greg enjoys spending time with his family and friends.
Headshot Jennifer Zelaya

Jennifer Zelaya, MHA

Director of Human Resources

Jenny Zelaya is the director of human resources at Ackerman Cancer Center and Ackerman Urology, where she oversees all HR functions and fosters a positive, inclusive workplace culture. She holds a master’s degree in health administration from the University of Miami and brings extensive experience in talent management, employee engagement, and regulatory compliance. Fluent in Spanish, Jennifer enjoys staying active outside of work, playing pickleball, golfing with friends and family, and spending time with her golden retriever, Lenny.
Headshot Amy Mousa

Amy Mousa, CPA

Director of Finance and Accounting

Amy Mousa joined Ackerman Cancer Center in November 2021 and serves as the director of finance and accounting. In her role, she oversees financial operations and supports the organization’s strategic and operational goals. Amy holds a Florida CPA license and earned her Bachelor of Business Administration in accounting from the University of North Florida. Outside of work, she enjoys staying active, traveling, and spending quality time with her family.
Headshot Nelson Miksys

Nelson Miksys, PhD, MCCPM

Chief Medical Physicist

Nelson Miksys joined Ackerman Cancer Center in October 2019. As chief medical physicist, Nelson manages the medical physics department, which is responsible for
quality assurance of all patient treatment plans, calibration of the radiation therapy equipment, maintenance of the radiation safety program, integration of new technology
into the clinic, and providing clinical technical support across all aspects of the cancer center. Nelson has over ten years of experience as a medical physicist and comes to Ackerman Cancer Center from The Ottawa Hospital Cancer Centre (Ottawa, Canada). Nelson has a PhD in medical physics from Carleton University (Ottawa, Canada) and a
master’s degree in medical and health physics from McMaster University (Hamilton,
Canada). Outside of work, Nelson is actively involved in his children’s sports activities and community social events and is passionate about maintaining a healthy lifestyle through regular physical fitness and outdoor activities.

Headshot Robert Tokarz

Robert Tokarz, MS, DABR

Vice President, Technical Services

Rob Tokarz joined Ackerman Cancer Center in January 2014 and oversees the Physics, Dosimetry, Therapy, Imaging, IT, and Transcription departments. He holds a Bachelor of Science in physics from Notre Dame and a Master of Science in medical physics from Columbia University. Rob has worked in the field of medical physics for 25 years and has worked previously at Memorial Sloan Kettering Cancer Center. Prior to his career in medical physics, Rob was an officer in the United States Navy, where he attained the rank of lieutenant commander. As a naval aviator, he flew Seahawk
helicopters out of Naval Station Mayport and was stationed overseas in Bahrain.

Headshot Gigi Ackerman Schwartz

Gigi Ackerman Schwartz, MBA

Vice President, Operations

Gigi Ackerman Schwartz joined Ackerman Cancer Center in November 2020 and leads strategic planning initiatives across all departments, directs all aspects of revenue cycle management, and works to develop and maintain relationships with community partners. Gigi holds an MBA from Tulane University. A Jacksonville native, she is involved in several local charitable and civic organizations. She serves as chair of the Art in Public Places Committee for the Cultural Council of Greater Jacksonville, is a member of the National Young Leadership Cabinet, and is a trustee of the Jewish Community Alliance and Jacksonville Jewish Center. In her free time, Gigi enjoys playing mahjong, exploring new hobbies with friends, and spending time with her husband and two-year-old daughter.

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Headshot Baylee Richter

Baylee Richter, BS

Community Relations Manager

Baylee Richter joined Ackerman Cancer Center in November 2024 and oversees digital campaigns, brand strategy, and community outreach and engagement. With more than eight years of experience in events and marketing, she has led initiatives that strengthen patient engagement, community awareness, and referral growth. Baylee holds a Bachelor of Science in hospitality and tourism management from Slippery Rock University of Pennsylvania. Outside of work, she stays actively involved in the community through her service on the board of the American Lung Association. She also supports the American Cancer Society’s Cowford Ball as a member of the children’s art project committee and contributes to the Jacksonville Chamber’s NEXTUP JAX program, serving on two committees. In her free time, Baylee enjoys spending time with her Australian Shepherd, Cooper, and cheering on the Pittsburgh Steelers.