Alonso V. Pacheco, MD

Medical Oncologist / Hematologist

5280 Top Doc 2018
Alonso V. Pacheco, MD | Oncologist at Rocky Mountain Cancer Centers


525 W. 15th St., Ste. 200
Pueblo, CO 81003


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Secondary Location(s)

Canon City

109 Latigo Ln., Ste. E
Canon City, CO 81212


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Pueblo Breast Specialists

525 W. 15th St., Ste. 200
Pueblo, CO 81003


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About Alonso V. Pacheco, MD

Dr. Pacheco is a board-certified medical oncologist. He is enjoys treating patients with all cancer types and hematological disorders. Dr. Pacheco has a passion for treating patients with a diagnosis of advanced cancer and maximizing opportunities to cure cancer. Dr. Pacheco focuses on providing personalized and targeted cancer treatments, including immunotherapy. Favoring a collaborative approach, Dr. Pacheco attends general oncology tumor boards at multiple hospitals (St. Mary Corwin, Parkview, and St. Thomas Moore) and city-wide hematology boards regularly. He also presents and reviews cases with other cancer specialists such as surgeons, radiologists, pathologists, and radiation oncologists. This multi-disciplinary team confers to tailor the most beneficial treatment plan for each patient.

Advanced Practice Providers Working With Dr. Pacheco

Board Certifications

Internal Medicine
Medical Oncology


  • Blood Cancers
    • Hodgkin’s Lymphoma
    • Lymphoma
    • Multiple Myeloma
    • Non-Hodgkin’s Lymphoma
  • Brain Cancer
  • Breast Cancer
  • Central Nervous System Tumors
  • Gastrointestinal Cancers
    • Anal Cancer
    • Pancreatic Cancer
  • Genitourinary Cancers
    • Bladder Cancer
    • Kidney Cancer
    • Prostate Cancer
  • Head and Neck Cancer
  • Lung Cancer
  • Skin Cancer



Medical Oncology & Hematology, University of New Mexico Health Sciences Center, Albuquerque, NM


University of New Mexico Health Sciences Center, Albuquerque, NM

Medical School

University of Colorado Health Sciences Center, Denver, CO

Patient Care Philosophy

I believe in the importance of amplifying the voice the patient and practicing shared decision-making in determining the next best appropriate plan of action. I believe it is important to maintain the patient's health throughout treatment, keep their energy level as high as possible, and maintain a positive outlook on life.

Additional Information

Rocky Mountain Cancer Centers, Medical Director


Pacheco, A., Gress, A., Mcfarlane, T., Garcia, M., Markley, L. Chemo-Toxicity Calculator use in shared decision-making for chemotherapy treatment planning. Presented at the 2023 American Society of Clinical Oncology Quality Care Symposium, abstract 403.