HOUSTON, Texas., August 4, 2026 – Oncology Consultants (OC), a partner practice of American Oncology Network (AON), is pleased to welcome Board-certified medical oncologist Cesar De Las Casas, MD, MPH to its physician team. Dr. De Las Casas is now accepting patients at the Texas Medical Center, Memorial City and Southwest locations.

Dr. De Las Casas earned his medical degree from Universidad Peruana Cayetano Heredia in Lima, Peru. He completed his residency at Baylor College of Medicine, where he served as chief resident, and his hematology-oncology fellowship at The University of Texas MD Anderson Cancer Center. He then earned a Master of Public Health degree from the University of Texas School of Public Health. He went on to serve as a Visiting Professor at Universidad Peruana Cayetano Heredia and Faculty at University of Texas MD Anderson Cancer Center.

Prior to joining Oncology Consultants, Dr. De Las Casas held multiple leadership positions including Director of Hematologia/Oncologia at CAA-British American Hospital in Lima, Peru, Hematology Oncology Section Chief at the VA in West Palm Beach, Florida, San Antonio, Texas and Miami, Florida; Hematology/Oncology Medical Director at Scott & White in Waco, Texas, and Malignant Hematology Director at Memorial Healthcare in Broward. He has led successful openings and expansions of new Hematology/Oncology clinics for Methodist Hospital in Baytown, Texas, and Halifax Health in Deltona, Florida.

“Oncology Consultants has built a long-standing reputation for delivering high-quality cancer care in a community setting,” said Dr. De Las Casas. “I am excited to work alongside the physician team to continue providing high-quality, personalized care to patients close to home.”

Oncology Consultants provides community-based oncology care at 18 locations across South Texas and is staffed by 19 Board-certified medical oncologists, 3 Board-certified radiation oncologists, and 25 advanced practitioners. The practice offers comprehensive services, including access to the latest cancer therapies, radiation oncology, diagnostic imaging, laboratory testing, pharmacy services, survivorship programs and patient support – all delivered close to home to help reduce travel burdens for patients and their families. Clinics feature private exam rooms and on-site infusion suites designed to promote patient comfort and privacy.

“We are excited to have Dr. De Las Casas join our practice,” said Luis T. Campos, MD, president of Oncology Consultants and a Board-certified medical oncologist. “He is dedicated to delivering evidence-based, compassionate care that reflects the values of our physician team. I’m confident our patients will benefit from his expertise.”

“On behalf of AON, I am pleased to welcome Dr. De Las Casas to our network,” said Stephen “Fred” Divers, MD, AON’s chief medical officer. “His clinical expertise and commitment to patient-centered care will strengthen the exceptional care we provide to patients throughout Texas and across our network.”

Dr. De Las Casas is now accepting new patients. To learn more about Oncology Consultants, visit oncologyconsultants.com.

About Oncology Consultants

Oncology Consultants (OC) is the largest independent community oncology practice in Houston. Since 1982, it has been committed to delivering cutting-edge cancer treatment in a caring environment. With locations throughout South Texas, Oncology Consultants offers a comprehensive range of services and treatments, including infusion therapy, radiotherapy, diagnostic imaging, pharmacy services, clinical trials, genetic testing, telemedicine, and more.

About American Oncology Network

American Oncology Network (AON) is an alliance of physicians and seasoned healthcare leaders partnering to ensure the long-term success and viability of community oncology and other specialties. Founded in 2018, AON’s rapidly expanding network represents more than 350 providers practicing across 21 states. AON pioneers innovative healthcare solutions through its physician-led model, fostering value-based care that improves patient outcomes while reducing costs and expanding access to quality care. AON equips its network physicians with the tools they need to thrive independently while providing comprehensive support, integrated revenue-diversifying ancillary services, and practice management expertise, enabling physicians to focus on what matters most – providing the highest standard of care for every patient. AON is committed to promoting health equity by addressing disparities in cancer care and ensuring that all patients have access to the care they need to achieve optimal health outcomes. With a focus on innovation and collaboration, AON is shaping the future of community oncology. For more information, please visit AONcology.com or follow us on LinkedIn, Facebook, X (formerly Twitter) and YouTube.

FORT MYERS, Fla., July 23, 2026 – American Oncology Network (AON), one of the nation’s fastest-growing networks of community oncology practices, continues to strengthen its radiology, imaging and radiopharmaceutical therapy (RPT) program through strategic physician leadership, expanded clinical capabilities and ongoing investment in innovative cancer care that brings advanced treatments closer to where patients live and work.

This year, AON has accelerated the growth of its radiology and radiation oncology services while expanding support for radiopharmaceutical therapies, one of the fastest-growing areas in cancer treatment. Through clinical expertise, physician education and operational support, AON is helping its partner practices prepare for the next generation of targeted cancer therapies.

AON’s radioligand therapy program has expanded significantly since launching its first site at AON partner practice, Genesis Cancer & Blood Institute in Hot Springs, Arkansas, in 2023. The network now has nine active radioligand therapy centers, including:

• Cancer and Blood Specialists of Arizona (Casa Grande, Arizona)
• Florida Oncology and Hematology (Fort Myers, Florida)
• Florida Oncology and Hematology (Naples, Florida)
• Florida Oncology and Hematology (Clearwater, Florida)
• Genesis Cancer & Blood Institute (Hot Springs, Arkansas)
• Messino Cancer Centers (Ashville, North Carolina)
• Oncology Consultants (Houston, Texas)
• Woodlands Cancer Institute (The Woodlands, Texas)
• Zangmeister Cancer Center (Columbus, Ohio)

Five additional sites are currently under development, reflecting AON’s long-term commitment to expanding patient access to advanced radiopharmaceutical therapies in community oncology settings nationwide.

“Radiopharmaceutical therapies continue to transform oncology, and AON is committed to ensuring patients can access these innovative treatments in their own communities,” said Todd Schonherz, AON chief executive officer. “The continued growth of our radioligand therapy program, combined with investments in physician leadership and clinical infrastructure, further positions our network to expand the delivery of innovative, world-class cancer care in communities across the country.”

AON provides partner practices that open radioligand therapy centers comprehensive support for program development, including patient population assessments, facility planning, regulatory guidance, physician training, staffing resources and ongoing operational oversight.

“Radiopharmaceutical therapies represent one of the most exciting advances in oncology, and community practices have an opportunity to prepare today for what’s next,” said Guy Messer, AON vice president of radiation and radiology services. “Since launching our first radioligand therapy program in 2023, we’ve continued to expand access across the AON network while helping practices build sustainable programs that are ready to deliver both today’s therapies and tomorrow’s innovations.”

New Physician Leadership

As part of this continued growth, AON recently expanded its physician leadership team with two key appointments.

Robert J. McDonald, MD, FACNM, joined AON as radiology medical director and in-house reading radiologist. A nationally recognized, board-certified nuclear medicine physician with more than 30 years of experience, Dr. McDonald oversees radiology services, provides PET and CT interpretation for multiple AON partner practices, performs advanced radiotheranostic therapies, and chairs the radiology segment of the Physician Leadership Committee. He also leads physician preceptorships, supports protocol development and helps expand radioligand therapy capabilities across the network.

“AON has created an environment where radiology, nuclear medicine and oncology teams can work together to bring advanced imaging and radiopharmaceutical therapies directly into community practice settings,” Dr. McDonald said. “I’m excited to help continue to expand these capabilities so more patients can benefit from highly specialized care close to home.”

Jason Berilgen, MD was named medical director of radiation oncology. In this role, he provides clinical leadership for AON’s radiation oncology initiatives, oversees the development of clinical protocols, supports the expansion of evidence-based therapies and chairs both the AON Radiation Oncology Committee and the radiation oncology segment of the Physician Leadership Committee. Dr. Berilgen is a board-certified radiation oncologist with extensive expertise in image-guided radiation therapy, stereotactic body radiotherapy, stereotactic radiosurgery and other advanced treatment techniques.

“Radiation oncology continues to evolve rapidly, and collaboration across specialties is essential to delivering the best possible outcomes for patients,” Dr. Berilgen said. “I look forward to continuing to work with physicians across the AON network to strengthen clinical programs, expand access to evidence-based treatments and support innovation in community oncology care.”

Together, these physician appointments and the continued expansion of AON’s therapeutic radioligand network reflect AON’s ongoing commitment to ensuring cancer patients have access to innovative, high-quality cancer care in the communities where they live and work.

About American Oncology Network

American Oncology Network (AON) is an alliance of physicians and seasoned healthcare leaders partnering to ensure the long-term success and viability of community oncology and other specialties. Founded in 2018, AON’s rapidly expanding network represents more than 350 providers practicing across 21 states. AON pioneers innovative healthcare solutions through its physician-led model, fostering value-based care that improves patient outcomes while reducing costs and expanding access to quality care. AON equips its network physicians with the tools they need to thrive independently while providing comprehensive support, integrated revenue-diversifying ancillary services, and practice management expertise, enabling physicians to focus on what matters most – providing the highest standard of care for every patient. AON is committed to promoting health equity by addressing disparities in cancer care and ensuring that all patients have access to the care they need to achieve optimal health outcomes. With a focus on innovation and collaboration, AON is shaping the future of community oncology. For more information, please visit AONcology.com or follow us on LinkedIn, Facebook, X (formerly Twitter) and YouTube.

Media Contact:
Karen Riley Sawyer
American Oncology Network
Karen.Sawyer@AONcology.com

FORT MYERS, Fla., June 11, 2026 – American Oncology Network (AON), one of the nation’s fastest-growing networks of community oncology practices, and CanCare, Inc., a nonprofit organization dedicated to ensuring no one faces cancer alone, are pleased to announce they have partnered to provide holistic cancer care that connects patients and their families with both medical and emotional support throughout the cancer journey.

Announced during National Cancer Survivors Month, the partnership highlights the important role cancer survivors play in supporting others facing a diagnosis and celebrates the resilience, hope and lived experiences that help strengthen the cancer community.

The partnership reflects AON’s commitment to delivering patient-centered, whole-person care by combining advanced cancer treatment with individualized peer support from trained cancer survivors and caregivers. Together, AON and CanCare aim to support patients’ physical, emotional and social well-being while enhancing the overall patient experience.

AON delivers state-of-the-art cancer care through community oncology practices located where patients live and work, helping ensure access to high-quality, personalized care close to home. Through this partnership, patients and their loved ones will also have access to CanCare’s nationwide network of trained volunteers who provide one-to-one emotional support based on shared experiences.

CanCare volunteers are cancer survivors or experienced caregivers who complete a comprehensive training program and are carefully matched with patients based on diagnosis or life experience. Support is available at no cost and can be provided by phone, email, text message or in person.

The service is available to patients and caregivers at every stage of the cancer journey, including those who are newly diagnosed, undergoing treatment, transitioning into survivorship or caring for a loved one with cancer.

The partnership builds on the success of pilot CanCare programs at four AON partner practices: Genesis Cancer and Blood Institute, Florida Oncology and Hematology, and Hematology Oncology Clinic, and Oncology Consultants. The programs connected patients with trained survivor and caregiver volunteers who provided emotional support, encouragement and practical guidance throughout their cancer journeys. Positive feedback from patients and care teams demonstrated the value of integrating peer support into community oncology care and helped pave the way for a broader rollout across AON partner practices.

“At Genesis Cancer and Blood Institute, we’ve seen firsthand how meaningful peer support can be for patients and families navigating a cancer diagnosis,” said Stephen “Fred” Divers, MD, medical oncologist at Genesis Cancer and Blood Institute and chief medical officer of AON. “CanCare complements the clinical care we provide by helping patients feel understood, supported and less alone throughout treatment.”

“The CanCare program has been an invaluable resource for our patients, providing comfort and connection during some of the most challenging moments of their lives,” said Michael J. Castine, III, MD, medical oncologist at Hematology Oncology Clinic. “The opportunity to speak with someone who has faced similar experiences can have a profound impact on a patient’s emotional well-being and overall care experience.”

“Cancer care extends beyond medical treatment, and programs like CanCare help address the emotional and personal challenges that often accompany a diagnosis,” said Jose Alemar, MD, medical oncologist at Florida Oncology and Hematology. “These connections provide reassurance, hope and encouragement, helping patients feel more confident and supported throughout their cancer journey.”

“Cancer affects every aspect of a patient’s life, and emotional support is an important part of comprehensive cancer care,” said Luis T. Campos, MD, president and medical oncologist at Oncology Consultants. “Our experience with CanCare has allowed us to see how meaningful it is for patients to connect with someone who has walked a similar path. These relationships help patients feel supported, understood and empowered throughout their treatment journey.”

AON Care Coordination Manager Isabel Verastegui serves as a CanCare survivor volunteer.

“As both a breast cancer survivor and a CanCare volunteer, I understand how powerful it can be to connect with someone who truly understands what you’re experiencing,” Verastegui said. “Being able to offer encouragement, compassion and hope during a difficult time is incredibly meaningful. No one should have to face cancer alone, and I’m honored to help support patients and families along their journey.”

“At American Oncology Network, we believe exceptional cancer care extends beyond treating a diagnosis,” said Todd Schonherz, chief executive officer of AON and a member of CanCare’s board of directors. “Our partnership with CanCare strengthens our ability to care for the whole person by connecting patients with trained survivors and caregivers who understand the challenges they face. By combining high-quality clinical care with meaningful peer support, we can make a lasting difference in the lives of patients and their families.”

“For more than 35 years, CanCare has been dedicated to providing hope and healing through the power of shared experience,” said Darcie Wells, president and chief executive officer of CanCare. “We are proud to partner with American Oncology Network to expand access to emotional support services to patients and caregivers nationwide. Together, we are ensuring more people facing cancer have someone by their side who understands their journey and can offer encouragement, connection and hope.”

The partnership underscores both organizations’ shared commitment to improving the patient experience and delivering comprehensive cancer care that supports the physical, emotional and social needs of patients and caregivers.

Learn more about the AON-CanCare partnership by visiting aoncology.com/cancare/.

About CanCare, Inc.

CanCare, Inc. is a nonprofit organization based in Houston, Texas, with a mission to provide hope and healing to the cancer community by ensuring anyone facing cancer can have a survivor by their side.

CanCare connects people facing cancer with trained volunteer survivors and caregivers for free, one-to-one emotional support. CanCare has been serving cancer patients and families for more than 35 years and supports cancer patients and caregivers in all 50 states. For more information, visit cancare.org or follow us on YouTube, Facebook, or Instagram.

About American Oncology Network

American Oncology Network (AON) is an alliance of physicians and seasoned healthcare leaders partnering to ensure the long-term success and viability of community oncology and other specialties. Founded in 2018, AON’s rapidly expanding network represents more than 350 providers practicing across 21 states. AON pioneers innovative healthcare solutions through its physician-led model, fostering value-based care that improves patient outcomes while reducing costs and expanding access to quality care. AON equips its network physicians with the tools they need to thrive independently while providing comprehensive support, integrated revenue-diversifying ancillary services, and practice management expertise, enabling physicians to focus on what matters most – providing the highest standard of care for every patient. AON is committed to promoting health equity by addressing disparities in cancer care and ensuring that all patients have access to the care they need to achieve optimal health outcomes. With a focus on innovation and collaboration, AON is shaping the future of community oncology. For more information, please visit AONcology.com or follow us on LinkedIn, Facebook, X (formerly Twitter) and YouTube.

Media Contact:

Karen Riley Sawyer
American Oncology Network
Karen.Sawyer@AONcology.com

Partnership launches at AON partner practices, Hematology Oncology of Indiana and Genesis Cancer and Blood Institute and is available to all AON partner practices nationwide  

FORT MYERS, Fla., June 10, 2026 – American Oncology Network (AON), one of the nation’s fastest-growing networks of community oncology practices, today announced a national partnership with Colla Health to expand access to behavioral health services for patients receiving cancer care in community-based settings. 

The partnership launches with two AON partner practices – Hematology Oncology of Indiana and Genesis Cancer and Blood Institute – and will be available to all AON partner practices nationwide by the end of 2026. 

Cancer affects more than a patient’s physical health. Throughout the cancer journey, many patients experience anxiety, depression, stress, sleep disturbances and other emotional challenges. Through this partnership, patients will have access to specialized behavioral health support, including therapeutic support, case management, and psychiatric oversight and consultation designed specifically for people living with cancer. 

Colla Health’s oncology-focused behavioral health model integrates mental health support into a cancer practice and patient journey, helping patients build coping strategies, improve quality of life and navigate the emotional challenges that often accompany diagnosis, treatment and survivorship. 

“Community oncology is about caring for the whole patient, not just treating the disease,” said Todd Schonherz, CEO of American Oncology Network. “By partnering with Colla Health, we are expanding access to specialized behavioral health resources that complement the exceptional cancer care our practices already provide. This partnership reinforces our commitment to delivering comprehensive, patient-centered care close to home.” 

The program connects eligible patients with behavioral health specialists through convenient telehealth and phone-based services. Care is coordinated alongside the oncology team, helping ensure patients receive support throughout every stage of treatment and recovery. 

“Patients facing cancer often experience emotional and psychological challenges that can affect their overall well-being and treatment experience,” said Stephen “Fred” Divers, MD, chief medical officer of AON and medical oncologist at Genesis Cancer and Blood Institute. “This partnership enables us to provide additional support tailored to the unique needs of our patients, helping them feel heard, supported and empowered throughout their care.” 

“Behavioral health is an essential component of comprehensive cancer care,” said Brian P. Mulherin, MD, medical director at AON and medical oncologist at Hematology Oncology of Indiana. “By integrating these services into the patient experience, we can better address the emotional impact of cancer while supporting patients through treatment, recovery, and survivorship.”  

Colla Health’s behavioral health clinicians and psychiatric team specialize in psycho-oncology, a field focused on addressing the psychological, emotional and social effects of cancer. The services are designed to improve patient well-being while reducing barriers to accessing mental health care. 

“We founded Colla Health to ensure patients facing serious illnesses have access to the mental health support they need alongside their medical treatment,” said Milan Thakor, co-founder and chief executive officer of Colla Health. “Our partnership with American Oncology Network expands access to specialized behavioral health services for patients receiving care in community oncology practices, where most cancer care in the United States is delivered.” 

“Mental health is a crucial part of cancer care and we’re grateful to AON for leading as a network in this work,” said Tyler Jones, MD, chief medical officer of Colla Health. “The evidence is clear: addressing depression and anxiety improves adherence, quality of life, and survival. We’re proud to partner with AON to make that support routine in the community practices where most patients are treated.”​     ​ 

Announced during National Cancer Survivors Month, the partnership underscores the importance of addressing both the physical and emotional aspects of cancer care and survivorship while helping patients access the resources they need to thrive during and after treatment. 

 
For more information about the American Oncology Network, visit AONcology.com. To learn more about Colla Health, visit CollaHealth.com. 

About Colla Health

Colla Health provides a comprehensive behavioral health platform designed to integrate psychiatric and counseling care directly into community oncology practices. Colla Health combines deep clinical expertise with specialized training in psycho-oncology. Every clinician brings advanced psycho-oncology training, direct cancer patient experience, and evidence based therapeutic interventions. For more information, please visit CollaHealth.com or follow us on LinkedIn. 

About American Oncology Network

American Oncology Network (AON) is an alliance of physicians and seasoned healthcare leaders partnering to ensure the long-term success and viability of community oncology and other specialties. Founded in 2018, AON’s rapidly expanding network represents more than 350 providers practicing across 21 states. AON pioneers innovative healthcare solutions through its physician-led model, fostering value-based care that improves patient outcomes while reducing costs and expanding access to quality care. AON equips its network physicians with the tools they need to thrive independently while providing comprehensive support, integrated revenue-diversifying ancillary services, and practice management expertise, enabling physicians to focus on what matters most – providing the highest standard of care for every patient. AON is committed to promoting health equity by addressing disparities in cancer care and ensuring that all patients have access to the care they need to achieve optimal health outcomes. With a focus on innovation and collaboration, AON is shaping the future of community oncology. For more information, please visit AONcology.com or follow us on LinkedIn, Facebook, X (formerly Twitter) and YouTube. 

Media Contact:  

Karen Riley Sawyer
American Oncology Network
Karen.Sawyer@AONcology.com