About
Dr. Claudia Tellez holds triple board certification in internal medicine and hematology-oncology. She earned her Doctor of Medicine from the University of Illinois, Chicago. Her postgraduate training took place at Northwestern University's McGaw Medical Center, where she completed both a residency in internal medicine and a fellowship in hematology-oncology.
Dr. Tellez spent 28 years on the medical staff of Northwestern Memorial Hospital. She previously served as Clinical Assistant Professor at the Feinberg School of Medicine, teaching medical students, residents, and oncology fellows. She contributed to the Breast Cancer Tumor Board Teaching Conference and founded the Lurie Cancer Center Hispanic Breast Cancer Clinic at Northwestern Memorial Hospital. A native of Colombia, she remains active in breast cancer education within the Hispanic community. Her clinical focus spans blood disorders, hematological malignancies, breast cancer across all stages, and early cancer detection. She also contributes regularly to national and international media on health topics.
Education & Training
Medical School
Doctor of Medicine, University of Illinois, Chicago
Residency
Residency in Internal Medicine, Northwestern University McGaw Medical Center
Fellowship
Fellowship in Hematology-Oncology, Northwestern University McGaw Medical Center
Certifications
Conditions Treated
Who is Dr. Tellez right for?
Dr. Tellez is an excellent fit for patients who want a primary care physician with deep oncology expertise. Adults managing blood disorders, hematological malignancies, or breast cancer benefit from her specialized background. She also serves patients focused on early cancer detection and preventive medicine. Hispanic patients seeking culturally connected care and breast cancer education will find a particularly strong match in Dr. Tellez.
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Frequently Asked Questions
Dr. Tellez focuses on blood disorders, hematological malignancies, and breast cancer across all stages. She also emphasizes early cancer detection and preventive medicine. Her triple board certification in internal medicine and hematology-oncology gives her a uniquely broad clinical scope within a primary care setting.
Yes. Dr. Tellez holds triple board certification in internal medicine and hematology-oncology. She earned those certifications after completing her residency and fellowship at Northwestern University's McGaw Medical Center.
Dr. Tellez earned her Doctor of Medicine from the University of Illinois, Chicago. She then completed both a residency in internal medicine and a fellowship in hematology-oncology at Northwestern University's McGaw Medical Center.
Dr. Tellez spent 28 years on the medical staff of Northwestern Memorial Hospital. During that time, she also served as a Clinical Assistant Professor at the Feinberg School of Medicine, teaching medical students, residents, and oncology fellows.
Yes. Dr. Tellez founded the Lurie Cancer Center Hispanic Breast Cancer Clinic at Northwestern Memorial Hospital. She also contributed to the Breast Cancer Tumor Board Teaching Conference. She continues to support breast cancer education within the Hispanic community.
Dr. Tellez applies her hematology-oncology training to support patients dealing with cancer-related concerns, blood disorders, and early detection needs. Her background allows her to engage with oncology cases at a depth most primary care physicians cannot match.
Yes. Dr. Tellez contributes regularly to national and international media on health topics, particularly those related to cancer and the Hispanic community.
Doctor profile last updated March 21, 2026