Serving North County with compassionate care for 33 years

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Our History

North County Oncology was founded in 1976 by Winston Smith, M.D. In 1977, Warren Paroly, M.D. joined the practice, after completing a Medical Oncology Fellowship at University of Southern California, and has helped to transform the practice into a state-of-the-art cancer treatment facility. Dr. Smith retired from North County Oncology in 1997, however two years later Nayyar Siddique, M.D. joined the practice after extensive training, including a prestigious Oncology & Hematology Fellowship at the University of California, San Diego. In 2001, North County Oncology gained a third partner when David Oblon, M.D. joined the group, bringing with him his experience as a professor at both Brown University and UCSD as well as Director of the Bone Marrow Unit at several institutions. In 2008, North County Oncology moved to its current location, creating the ability to provide even more comprehensive services to those in need.

Our Mission

We at North County Oncology believe that all of our patients deserve exceptional care and progressive, state-of-the-art treatment. We strive to address all of the physical and emotional needs of our patients, supporting the healing process while delivering evidence-based medical treatment that is on par with academic institutions. Also at North County Oncology, we are proud to participate in clinical trials allowing us to provide additional progressive treatment options. North County Oncology successfully provides this world-class comprehensive care while also offering a warm, personal approach that is available close to home. Our goal is your return to good health and our commitment is to dedicate the vast amount of knowledge, resources, and support available at North County Oncology to make a vital impact in your life.

David Oblon, M.D.

Warren Paroly, M.D.

Nayyar Siddique, M.D.

Jacob Hauptman, PA-C

3617 Vista Way, Oceanside, CA 92056 T: 760.758.5770   F: 760.721.8597