Oncology
Leonard Ong, M.D.
Diagnostic Radiology
Roseville, CA
Leonard T. Ong, M.D., is a radiologist specializing in diagnostic imaging with a focus on oncology-related conditions, practicing in Roseville, California. His top areas of expertise include lung nodules, visceromegaly, boils, and ALK-positive non-small cell lung cancer, conditions often encountered in cancer patients requiring precise imaging for diagnosis and management. With over 16 years of clinical experience, he serves adult patient populations, including those with thoraci
16+
Years in Practice
Credentials
Board Certifications
- Radiology (ABR)
Education & Training
- Fellowship: Memorial Sloan Kettering Cancer Center (Abdominal Imaging, 2014)
- Residency: NYC Health + Hospitals/Harlem (Radiology, 2019)
Peer Recognition
- Castle Connolly — Top Doctor
2025-2026 (2 years)
Clinical Focus
Subspecialties
Radiation Oncology
Conditions & Treatments
Radiation TherapyCancer Surgery
Practice Details
Hospital Affiliations
- Kaiser Permanente
- Adventist Health Rideout
- Novant Health Forsyth
- Aurora Health
Languages
English
Experience
16+ years in practice