Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
Find Dr. Brennan's expertise for a condition
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- Distinguished
- Colorectal CancerDr. Brennan isDistinguished. Learn about Colorectal Cancer.
- Familial Colorectal CancerDr. Brennan isDistinguished. Learn about Familial Colorectal Cancer.
- Lung CancerDr. Brennan isDistinguished. Learn about Lung Cancer.
- Multiple MyelomaDr. Brennan isDistinguished. Learn about Multiple Myeloma.
- Pleuropulmonary BlastomaDr. Brennan isDistinguished. Learn about Pleuropulmonary Blastoma.
- Small Cell Lung Cancer (SCLC)Dr. Brennan isDistinguished. Learn about Small Cell Lung Cancer (SCLC).
- Urothelial CancerDr. Brennan isDistinguished. Learn about Urothelial Cancer.
View All 7 Distinguished Conditions
- Advanced
- Acute Eosinophilic PneumoniaDr. Brennan isAdvanced. Learn about Acute Eosinophilic Pneumonia.
- Adult Soft Tissue SarcomaDr. Brennan isAdvanced. Learn about Adult Soft Tissue Sarcoma.
- AgranulocytosisDr. Brennan isAdvanced. Learn about Agranulocytosis.
- ALK-Positive Non-Small Cell Lung Cancer
- AnemiaDr. Brennan isAdvanced. Learn about Anemia.
- Bladder CancerDr. Brennan isAdvanced. Learn about Bladder Cancer.
- Chromophobe Renal Cell CarcinomaDr. Brennan isAdvanced. Learn about Chromophobe Renal Cell Carcinoma.
- Chronic B-Cell Leukemia (CBCL)Dr. Brennan isAdvanced. Learn about Chronic B-Cell Leukemia (CBCL).
- Chronic Familial NeutropeniaDr. Brennan isAdvanced. Learn about Chronic Familial Neutropenia.
- Chronic Lymphocytic Leukemia (CLL)Dr. Brennan isAdvanced. Learn about Chronic Lymphocytic Leukemia (CLL).
- Clear Cell SarcomaDr. Brennan isAdvanced. Learn about Clear Cell Sarcoma.
- Diffuse Large B-Cell Lymphoma (DLBCL)
- EGFR Positive Lung CancerDr. Brennan isAdvanced. Learn about EGFR Positive Lung Cancer.
- Familial Pancreatic CancerDr. Brennan isAdvanced. Learn about Familial Pancreatic Cancer.
- Familial Prostate CancerDr. Brennan isAdvanced. Learn about Familial Prostate Cancer.
- Familial Wilms Tumor 2Dr. Brennan isAdvanced. Learn about Familial Wilms Tumor 2.
- Hypereosinophilic SyndromeDr. Brennan isAdvanced. Learn about Hypereosinophilic Syndrome.
- Inflammatory Breast CancerDr. Brennan isAdvanced. Learn about Inflammatory Breast Cancer.
- Large-Cell Immunoblastic LymphomaDr. Brennan isAdvanced. Learn about Large-Cell Immunoblastic Lymphoma.
- Large-Cell Lung CarcinomaDr. Brennan isAdvanced. Learn about Large-Cell Lung Carcinoma.
- Lung AdenocarcinomaDr. Brennan isAdvanced. Learn about Lung Adenocarcinoma.
- Lynch SyndromeDr. Brennan isAdvanced. Learn about Lynch Syndrome.
- Monoclonal Gammopathy of Undetermined Significance (MGUS)
- Muscle Invasive Bladder CancerDr. Brennan isAdvanced. Learn about Muscle Invasive Bladder Cancer.
- Non-Muscle Invasive Bladder CancerDr. Brennan isAdvanced. Learn about Non-Muscle Invasive Bladder Cancer.
- Non-Small Cell Lung Cancer (NSCLC)Dr. Brennan isAdvanced. Learn about Non-Small Cell Lung Cancer (NSCLC).
- Paget Disease of the BreastDr. Brennan isAdvanced. Learn about Paget Disease of the Breast.
- Pancreatic CancerDr. Brennan isAdvanced. Learn about Pancreatic Cancer.
- Renal Cell Carcinoma (RCC)Dr. Brennan isAdvanced. Learn about Renal Cell Carcinoma (RCC).
- Richter SyndromeDr. Brennan isAdvanced. Learn about Richter Syndrome.
- Schnitzler SyndromeDr. Brennan isAdvanced. Learn about Schnitzler Syndrome.
- Small Lymphocytic Lymphoma (SLL)Dr. Brennan isAdvanced. Learn about Small Lymphocytic Lymphoma (SLL).
- Smoldering Multiple MyelomaDr. Brennan isAdvanced. Learn about Smoldering Multiple Myeloma.
- Squamous Cell Lung CarcinomaDr. Brennan isAdvanced. Learn about Squamous Cell Lung Carcinoma.
- ThrombocytopeniaDr. Brennan isAdvanced. Learn about Thrombocytopenia.
- Upper Tract Urothelial Carcinoma (UTUC)
- Wilms TumorDr. Brennan isAdvanced. Learn about Wilms Tumor.
- WT1-Related Wilms Tumor SyndromesDr. Brennan isAdvanced. Learn about WT1-Related Wilms Tumor Syndromes.
View All 38 Advanced Conditions
- Experienced
- Acute Lymphoblastic Leukemia (ALL)Dr. Brennan isExperienced. Learn about Acute Lymphoblastic Leukemia (ALL).
- Acute Monoblastic Leukemia (AmoL)Dr. Brennan isExperienced. Learn about Acute Monoblastic Leukemia (AmoL).
- Acute Myeloblastic Leukemia with Maturation
- Acute Myeloblastic Leukemia without Maturation
- Acute Myeloid Leukemia (AML)Dr. Brennan isExperienced. Learn about Acute Myeloid Leukemia (AML).
- Adult Immune ThrombocytopeniaDr. Brennan isExperienced. Learn about Adult Immune Thrombocytopenia.
- Anal CancerDr. Brennan isExperienced. Learn about Anal Cancer.
- Anaplastic Large Cell LymphomaDr. Brennan isExperienced. Learn about Anaplastic Large Cell Lymphoma.
- AngiosarcomaDr. Brennan isExperienced. Learn about Angiosarcoma.
- Aplastic AnemiaDr. Brennan isExperienced. Learn about Aplastic Anemia.
- Arterial EmbolismDr. Brennan isExperienced. Learn about Arterial Embolism.
- Autoimmune Hemolytic AnemiaDr. Brennan isExperienced. Learn about Autoimmune Hemolytic Anemia.
- B-Cell LymphomaDr. Brennan isExperienced. Learn about B-Cell Lymphoma.
- Bone Marrow AspirationDr. Brennan isExperienced. Learn about Bone Marrow Aspiration.
- Bone TumorDr. Brennan isExperienced. Learn about Bone Tumor.
- Breast CancerDr. Brennan isExperienced. Learn about Breast Cancer.
- Breast Cancer in MenDr. Brennan isExperienced. Learn about Breast Cancer in Men.
- Childhood Acute Myeloid LeukemiaDr. Brennan isExperienced. Learn about Childhood Acute Myeloid Leukemia.
- Cholangiocarcinoma (Bile Duct Cancer)Dr. Brennan isExperienced. Learn about Cholangiocarcinoma (Bile Duct Cancer).
- ChondrosarcomaDr. Brennan isExperienced. Learn about Chondrosarcoma.
- ChoriocarcinomaDr. Brennan isExperienced. Learn about Choriocarcinoma.
- Chronic Myelogenous Leukemia (CML)Dr. Brennan isExperienced. Learn about Chronic Myelogenous Leukemia (CML).
- Classical Hodgkin LymphomaDr. Brennan isExperienced. Learn about Classical Hodgkin Lymphoma.
- Deep Vein ThrombosisDr. Brennan isExperienced. Learn about Deep Vein Thrombosis.
- Epithelioid SarcomaDr. Brennan isExperienced. Learn about Epithelioid Sarcoma.
- Essential ThrombocythemiaDr. Brennan isExperienced. Learn about Essential Thrombocythemia.
- Ewing SarcomaDr. Brennan isExperienced. Learn about Ewing Sarcoma.
- Factor 11 DeficiencyDr. Brennan isExperienced. Learn about Factor 11 Deficiency.
- Febrile NeutropeniaDr. Brennan isExperienced. Learn about Febrile Neutropenia.
- Fibrolamellar CarcinomaDr. Brennan isExperienced. Learn about Fibrolamellar Carcinoma.
- FibrosarcomaDr. Brennan isExperienced. Learn about Fibrosarcoma.
- Follicular LymphomaDr. Brennan isExperienced. Learn about Follicular Lymphoma.
- Gallbladder AdenocarcinomaDr. Brennan isExperienced. Learn about Gallbladder Adenocarcinoma.
- Gallbladder CancerDr. Brennan isExperienced. Learn about Gallbladder Cancer.
- Gastric LymphomaDr. Brennan isExperienced. Learn about Gastric Lymphoma.
- Gastrointestinal Stromal TumorDr. Brennan isExperienced. Learn about Gastrointestinal Stromal Tumor.
- GliomaDr. Brennan isExperienced. Learn about Glioma.
- Hairy Cell Leukemia (HCL)Dr. Brennan isExperienced. Learn about Hairy Cell Leukemia (HCL).
- Hemangioma Thrombocytopenia SyndromeDr. Brennan isExperienced. Learn about Hemangioma Thrombocytopenia Syndrome.
- HemosiderosisDr. Brennan isExperienced. Learn about Hemosiderosis.
- Hodgkin LymphomaDr. Brennan isExperienced. Learn about Hodgkin Lymphoma.
- Idiopathic NeutropeniaDr. Brennan isExperienced. Learn about Idiopathic Neutropenia.
- Idiopathic Pulmonary HemosiderosisDr. Brennan isExperienced. Learn about Idiopathic Pulmonary Hemosiderosis.
- Immune Thrombocytopenic Purpura (ITP)Dr. Brennan isExperienced. Learn about Immune Thrombocytopenic Purpura (ITP).
- Iron Deficiency AnemiaDr. Brennan isExperienced. Learn about Iron Deficiency Anemia.
- Laryngeal CancerDr. Brennan isExperienced. Learn about Laryngeal Cancer.
- LiposarcomaDr. Brennan isExperienced. Learn about Liposarcoma.
- Lung NodulesDr. Brennan isExperienced. Learn about Lung Nodules.
- Lymphofollicular HyperplasiaDr. Brennan isExperienced. Learn about Lymphofollicular Hyperplasia.
- Mantle Cell Lymphoma (MCL)Dr. Brennan isExperienced. Learn about Mantle Cell Lymphoma (MCL).
- Marginal Zone Lymphoma (MZL)Dr. Brennan isExperienced. Learn about Marginal Zone Lymphoma (MZL).
- Mediastinal TumorDr. Brennan isExperienced. Learn about Mediastinal Tumor.
- MelanomaDr. Brennan isExperienced. Learn about Melanoma.
- Merkel Cell CarcinomaDr. Brennan isExperienced. Learn about Merkel Cell Carcinoma.
- MesenchymomaDr. Brennan isExperienced. Learn about Mesenchymoma.
- MesotheliomaDr. Brennan isExperienced. Learn about Mesothelioma.
- Metastatic Brain TumorDr. Brennan isExperienced. Learn about Metastatic Brain Tumor.
- Metastatic Pleural TumorDr. Brennan isExperienced. Learn about Metastatic Pleural Tumor.
- Myelodysplastic Syndrome (MDS)Dr. Brennan isExperienced. Learn about Myelodysplastic Syndrome (MDS).
- MyelofibrosisDr. Brennan isExperienced. Learn about Myelofibrosis.
- Myeloproliferative Neoplasms (MPN)Dr. Brennan isExperienced. Learn about Myeloproliferative Neoplasms (MPN).
- Myxoid LiposarcomaDr. Brennan isExperienced. Learn about Myxoid Liposarcoma.
- Nasopharyngeal CarcinomaDr. Brennan isExperienced. Learn about Nasopharyngeal Carcinoma.
- Neuroendocrine TumorDr. Brennan isExperienced. Learn about Neuroendocrine Tumor.
- Non-Hodgkin LymphomaDr. Brennan isExperienced. Learn about Non-Hodgkin Lymphoma.
- Oral Squamous Cell CarcinomaDr. Brennan isExperienced. Learn about Oral Squamous Cell Carcinoma.
- OsteosarcomaDr. Brennan isExperienced. Learn about Osteosarcoma.
- Philadelphia-Negative Chronic Myeloid Leukemia
- Polycythemia VeraDr. Brennan isExperienced. Learn about Polycythemia Vera.
- Posterior Fossa TumorDr. Brennan isExperienced. Learn about Posterior Fossa Tumor.
- Primary Lymphoma of the BrainDr. Brennan isExperienced. Learn about Primary Lymphoma of the Brain.
- Primitive Neuroectodermal Tumor (PNET)Dr. Brennan isExperienced. Learn about Primitive Neuroectodermal Tumor (PNET).
- Prolymphocytic LeukemiaDr. Brennan isExperienced. Learn about Prolymphocytic Leukemia.
- Prostate CancerDr. Brennan isExperienced. Learn about Prostate Cancer.
- Pulmonary EmbolismDr. Brennan isExperienced. Learn about Pulmonary Embolism.
- Relapsed Refractory Multiple Myeloma (RRMM)
- ReticuloendotheliosisDr. Brennan isExperienced. Learn about Reticuloendotheliosis.
- Rhabdomyosarcoma EmbryonalDr. Brennan isExperienced. Learn about Rhabdomyosarcoma Embryonal.
- Saddle Pulmonary EmbolismDr. Brennan isExperienced. Learn about Saddle Pulmonary Embolism.
- Severe Congenital NeutropeniaDr. Brennan isExperienced. Learn about Severe Congenital Neutropenia.
- Sickle Cell DiseaseDr. Brennan isExperienced. Learn about Sickle Cell Disease.
- Stomach CancerDr. Brennan isExperienced. Learn about Stomach Cancer.
- Teratoma of the MediastinumDr. Brennan isExperienced. Learn about Teratoma of the Mediastinum.
- Testicular CancerDr. Brennan isExperienced. Learn about Testicular Cancer.
- Testicular Yolk Sac TumorDr. Brennan isExperienced. Learn about Testicular Yolk Sac Tumor.
- Throat CancerDr. Brennan isExperienced. Learn about Throat Cancer.
- Undifferentiated Pleomorphic SarcomaDr. Brennan isExperienced. Learn about Undifferentiated Pleomorphic Sarcoma.
- Vitamin D DeficiencyDr. Brennan isExperienced. Learn about Vitamin D Deficiency.
- Waldenstrom MacroglobulinemiaDr. Brennan isExperienced. Learn about Waldenstrom Macroglobulinemia.
View All 89 Experienced Conditions
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