The 20 Best Triple-Negative Breast Cancer Doctors Near Me in Longmont, CO

Find the Top Triple-Negative Breast Cancer Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 16 doctor with experience in Triple-Negative Breast Cancer near Longmont, CO. Of these, 13 are Advanced and 3 are Experienced.

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16 providers found
    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    1760 E Ken Pratt Blvd Ste 301, 
    Longmont, CO 
     (3.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Sara Robinson is an Oncologist practicing medicine in Longmont, Colorado. Dr. Robinson is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. She is also highly rated in 17 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Chronic Lymphocytic Leukemia (CLL), and Pleuropulmonary Blastoma. Dr. Robinson is board certified in American Board Of Internal Medicine. Dr. Robinson is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    General Practice
    Advanced in Triple-Negative Breast Cancer
    General Practice

    Rocky Mountain Cancer Centers

    1760 E Ken Pratt Blvd Ste 301, 
    Longmont, CO 
     (3.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Gerlinde Tynan is a General Practice provider practicing medicine in Longmont, Colorado. Dr. Tynan is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Intraductal Papilloma, HER-2 Positive Breast Cancer, and Lymphadenectomy. Dr. Tynan is board certified in American Board Of Surgery. Dr. Tynan is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    1760 E Ken Pratt Blvd Ste 301, 
    Longmont, CO 
     (3.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    John Barnett is an Oncologist practicing medicine in Longmont, Colorado. Dr. Barnett is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 65 other conditions, according to our data. His clinical expertise encompasses Appendix Cancer, Colorectal Cancer, Familial Colorectal Cancer, and Paget Disease of the Breast. Dr. Barnett is board certified in American Board Of Internal Medicine. Dr. Barnett is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Triple-Negative Breast Cancer
    Experienced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    1760 E Ken Pratt Blvd Ste 301, 
    Longmont, CO 
     (3.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Kelly Casteel is a Hematologist practicing medicine in Longmont, Colorado. Dr. Casteel is rated as an Experienced provider by MediFind in the treatment of Triple-Negative Breast Cancer. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Thrombocytopenia, Agranulocytosis, Chronic Familial Neutropenia, and HER-2 Positive Breast Cancer. Dr. Casteel is board certified in American Board Of Internal Medicine. Dr. Casteel is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    1760 E Ken Pratt Blvd Ste 301, 
    Longmont, CO 
     (3.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Hossein Maymani is an Oncologist practicing medicine in Longmont, Colorado. Dr. Maymani is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Lung Cancer, Chronic B-Cell Leukemia (CBCL), Chronic Lymphocytic Leukemia (CLL), and Richter Syndrome. Dr. Maymani is board certified in American Board Of Internal Medicine. Dr. Maymani is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Radiation Oncology
    Advanced in Triple-Negative Breast Cancer
    Radiation Oncology

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Patrick Richard is a Radiation Oncologist practicing medicine in Boulder, Colorado. He has been practicing medicine for over 10 years. Dr. Richard is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Lung Cancer, Familial Prostate Cancer, HER-2 Positive Breast Cancer, and Prostate Cancer. Dr. Richard is board certified in American Board Of Radiology. Dr. Richard is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Mark Sitarik is an Oncologist practicing medicine in Boulder, Colorado. Dr. Sitarik is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 62 other conditions, according to our data. His clinical expertise encompasses Von Willebrand Disease (VWD), Heyde Syndrome, Paget Disease of the Breast, and Breast Cancer. Dr. Sitarik is board certified in American Board Of Internal Medicine. Dr. Sitarik is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Austin Poole is an Oncologist practicing medicine in Boulder, Colorado. Dr. Poole is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 40 other conditions, according to our data. His clinical expertise encompasses Prostate Cancer, Colorectal Cancer, Familial Colorectal Cancer, and Familial Prostate Cancer. Dr. Poole is board certified in American Board Of Internal Medicine. Dr. Poole is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Hematology
    Advanced in Triple-Negative Breast Cancer
    Hematology

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Leslie Busby is a Hematologist practicing medicine in Boulder, Colorado. Dr. Busby is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 56 other conditions, according to our data. His clinical expertise encompasses Familial Colorectal Cancer, Adult Soft Tissue Sarcoma, Bone Tumor, Thrombectomy, and Bone Marrow Aspiration. Dr. Busby is board certified in American Board Of Internal Medicine. Dr. Busby is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers LLP

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    David Andorsky is an Oncologist practicing medicine in Boulder, Colorado. Dr. Andorsky is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 65 other conditions, according to our data. His clinical expertise encompasses Follicular Lymphoma, Chronic B-Cell Leukemia (CBCL), Chronic Lymphocytic Leukemia (CLL), and Richter Syndrome. Dr. Andorsky is board certified in Internal Medicine-American Board Of Internal Medicine (ABIM), Medical Oncology-American Board Of Internal Medicine (ABIM), and Hematology-American Board Of Internal Medicine (ABIM). Dr. Andorsky is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers LLP

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Lori Jensen is an Oncologist practicing medicine in Boulder, Colorado. Dr. Jensen is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. She is also highly rated in 21 other conditions, according to our data. Her clinical expertise encompasses Paget Disease of the Breast, Breast Cancer, Small Lymphocytic Lymphoma (SLL), and Inflammatory Breast Cancer. Dr. Jensen is board certified in Internal Medicine-American Board Of Internal Medicine (ABIM). Dr. Jensen is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gregory Britt is a Hematologist practicing medicine in Boulder, Colorado. Dr. Britt is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 42 other conditions, according to our data. His clinical expertise encompasses Hodgkin Lymphoma, Acute Mountain Sickness, Adult Soft Tissue Sarcoma, and Childhood Iron Deficiency Anemia. Dr. Britt is board certified in American Board Of Internal Medicine. Dr. Britt is currently accepting new patients.

    Experienced in Triple-Negative Breast Cancer
    Radiation Oncology
    Experienced in Triple-Negative Breast Cancer
    Radiation Oncology

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Accepting New Patients

    Dario Pasalic is a Radiation Oncologist practicing medicine in Boulder, Colorado. He has been practicing medicine for over 10 years. Dr. Pasalic is rated as an Experienced provider by MediFind in the treatment of Triple-Negative Breast Cancer. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses HER-2 Positive Breast Cancer, Breast Cancer, Prostate Cancer, Orchiectomy, and Gastrostomy. Dr. Pasalic is board certified in American Board Of Radiology. Dr. Pasalic is currently accepting new patients.

    Experienced in Triple-Negative Breast Cancer
    Internal Medicine
    Experienced in Triple-Negative Breast Cancer
    Internal Medicine

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Sydney Brehany is an Internal Medicine provider practicing medicine in Boulder, Colorado. Dr. Brehany is rated as an Experienced provider by MediFind in the treatment of Triple-Negative Breast Cancer. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses HER-2 Positive Breast Cancer, Paget Disease of the Breast, Breast Cancer, and Triple-Negative Breast Cancer. Dr. Brehany is board certified in American Board Of Internal Medicine. Dr. Brehany is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Oncology
    Advanced in Triple-Negative Breast Cancer
    Oncology

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Jenny Fox is an Oncologist practicing medicine in Boulder, Colorado. Dr. Fox is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. She is also highly rated in 30 other conditions, according to our data. Her clinical expertise encompasses Paget Disease of the Breast, Breast Cancer, HER-2 Positive Breast Cancer, and Familial Prostate Cancer. Dr. Fox is board certified in American Board Of Internal Medicine. Dr. Fox is currently accepting new patients.

    Advanced in Triple-Negative Breast Cancer
    Advanced in Triple-Negative Breast Cancer

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Kathleen Monahan is an Oncologist practicing medicine in Boulder, Colorado. Dr. Monahan is rated as an Advanced provider by MediFind in the treatment of Triple-Negative Breast Cancer. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses HER-2 Positive Breast Cancer, Paget Disease of the Breast, Breast Cancer, and Triple-Negative Breast Cancer. Dr. Monahan is board certified in American Board Of Internal Medicine. Dr. Monahan is currently accepting new patients.

    Showing 1-16 of 16

    Last Updated: 04/28/2026

    What is the definition of Triple-Negative Breast Cancer?

    Triple-negative breast cancer (TNBC), a subtype of breast cancer, is a rare, malignant breast disease that lacks receptors for the hormones estrogen and progesterone and the human epidermal growth factor (HER2) protein usually found in other breast cancers. An aggressive cancer, triple-negative breast cancer grows and spreads more quickly than other types of invasive breast cancer. Triple-negative breast cancer is also more likely to reoccur and has a worse outcome (prognosis) than other breast cancers. Triple-negative breast cancer accounts for 10-15% of all breast cancers and is more common in women under the age of 40 who are African American or Hispanic, and who carry the BRCA1 gene mutation. Seventy percent of breast cancers in individuals with a BRCA gene mutation are triple-negative. Triple-negative breast cancer is classified in the following stages: Stage 0 – Ductal cancer in situ (DCIS), which is a non-invasive breast cancer. The cancer cells are still located in a breast duct and have not spread. Stage 1A – The breast cancer tumor is 2 centimeters or smaller and has not spread. Stage 1B – The tumor is 2 centimeters or smaller (or undetectable) with microscopic spread (micrometastases) into one-to-three axillary (underarm) lymph nodes. The metastasis is more than .2 millimeters but less than 2 millimeters and has not spread to other parts of the body. Stage IIA – One of the following has occurred, and the cancer has not spread beyond the lymph nodes: 1) The tumor is 2 centimeters (or undetectable) and has spread to one-to-three axillary (underarm) lymph nodes, with the cancer in the lymph nodes greater than 2 millimeters; 2) the tumor is 2 centimeters or smaller (or undetectable) and microscopic cancer is found in the internal mammary (breast) lymph nodes; 3) the tumor is 2 centimeters or smaller (or undetectable) and has spread to one-to-three axillary (underarm) lymph nodes and the internal mammary (breast) lymph nodes; or 4) the tumor is greater than 2 centimeters but less than 5 centimeters, but has not spread to lymph nodes. Stage IIB – One of the following has occurred, and the cancer has not spread beyond the lymph nodes: 1) the tumor is larger than 2 centimeters but less than 5 centimeters and has spread to one-to-three axillary (underarm) lymph nodes, and microscopic cancer is found in the internal mammary (breast) lymph nodes; or 2) the tumor is larger than 5 centimeters but has not invaded the chest wall or skin. Stage IIIA – One of the following has occurred, and the cancer has not spread beyond the lymph nodes: 1) the tumor is less than 5 centimeters (or undetectable) and has spread to four-to-nine axillary (underarm) lymph nodes; or 2) the tumor is greater than 5 centimeters, has not invaded the chest wall or skin, but has spread to one-to-nine axillary (underarm) lymph nodes or internal mammary (breast) nodes. Stage IIIB – The tumor has invaded the chest wall or skin, but hasn’t spread to other parts of the body, and one of the following has occurred: 1) the tumor has not spread to the lymph nodes; 2) the tumor has spread to one-to-three axillary (underarm) lymph nodes, and microscopic cancer has spread to the internal mammary (breast) nodes; or 3) the tumor has spread to four-to-nine axillary (underarm) lymph nodes, or it has caused swelling in the internal mammary (breast) nodes. Stage IIIC – The tumor is any size (or undetectable), had not spread beyond the lymph nodes, and one of the following has occurred: 1) the cancer has spread to 10 or more axillary (underarm) nodes; 2) the cancer has spread to the lymph nodes under the clavicle (collar bone); the cancer has spread to the lymph nodes above the collarbone; 3) the cancer has spread to axillary (underarm) lymph nodes; or 4) the cancer has spread to four or more axillary (underarm) lymph nodes, and microscopic cancer is found in internal mammary (breast) lymph nodes. Stage IV – The cancer is any size and may or may not have spread to close lymph nodes, but it has spread to organs such as the liver, lung, brain, or bones, or other distant lymph nodes.