Meet Our Providers​

Owen Kim, MD, DABR​​

Dr. Owen Kim serves as the Medical Director of the Roger S. Good Cancer Treatment Center. Board-certified in radiology, hospice, and palliative medicine, Dr. Kim brings a wealth of expertise to his role. In addition to his certifications, he is also a licensed X-ray supervisor and operator.

At the Roger S. Good Cancer Treatment Center, Dr. Kim oversees the radiation therapy program, ensuring the highest standards of care for patients. His dedication to the Cancer Treatment Center spans over three decades, treating patients with us since 1990. Over the years, Dr. Kim's contributions have played a vital role in the Center's growth into one of the pre-eminent oncology centers in the Central Valley.​

Georg Weidlich, PhD, DABR, DABMP​​​

As the Consulting Physicist for the Roger S. Good Cancer Treatment Center at Sierra View Medical Center, Dr. Georg Weidlich brings a wealth of academic knowledge and experience. Notably, Dr. Weidlich held the position of Consulting Professor in the Neurosurgery Department at Stanford University Medical Center, underscoring his extensive contributions to the field. Within the Cancer Treatment Center, Dr. Weidlich leads the Stereotactic Radiosurgery Program in collaboration with Radiation Oncologist Dr. Owen Kim.

Dr. Weidlich has earned a Master’s degree in Physics and a PhD in Electrical Engineering and Medical Physics. Beyond his role at Sierra View Medical Center, he serves as the Head Radiation Physicist for the Cyberknife program at the Fresno Community Hospital Radiation Oncology Department.

Kota C. Shekar, MD​​​

Dr. Kota Shekar, board-certified in both Medical Oncology and Hematology, brings over two decades of experience to the Roger S. Good Cancer Treatment Center. His extensive expertise spans the full spectrum of oncology diseases, with particular proficiency in the management of breast, colon, and lung cancers.

At the Cancer Treatment Center, Dr. Shekar oversees the medical oncology aspect of patient care. His responsibilities encompass not only the comprehensive management of cancer cases but also the diagnosis and treatment of blood disorders. Dr. Shekar ensures that patients receive the highest standard of care, contributing to the Center's commitment to advancing oncological practices.

Lizbeth Zamarripa Oseguera, MSN, RN, FNP-C​

Lizbeth Zamarripa Oseguera, MSN, RN, FNP-C, is a Nurse Practitioner (NP) who recently joined our Cancer Treatment Center, marking a significant addition to the healthcare team. Born and raised in Porterville, Lizbeth has always had a deep-rooted connection to her hometown. Her career as an NP began in family practice, but it was her interactions with oncology cases that resonated with her heart.​

Lizbeth is eager to serve the community in her new role, working alongside the CTC staff to provide quality healthcare. She is equally proud to bring the latest cutting-edge technology to oncology patients, as the Cancer Treatment Center remains at the forefront of medical advancements.