The 20 Best HER-2 Positive Breast Cancer Doctors Near Me in Mission Viejo, CA

Find the Top HER-2 Positive Breast Cancer Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 38 doctor with experience in HER-2 Positive Breast Cancer near Mission Viejo, CA. Of these, 29 are Experienced and 9 are Advanced.

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38 providers found
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    27799 Medical Center Road, Suite 460, 
    Mission Viejo, CA 
     (1.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ming Li is a Hematologist Oncology provider practicing medicine in Mission Viejo, California. Dr. Li is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Breast Cancer, Embryonal Tumor with Multilayered Rosettes, Gliosarcoma, and Glioblastoma.

    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    27799 Medical Center Road, Suite 460, 
    Mission Viejo, CA 
     (1.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Fen Jiang is a Hematologist Oncology provider practicing medicine in Mission Viejo, California. Dr. Jiang is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 17 other conditions, according to our data. Her clinical expertise encompasses Inflammatory Breast Cancer, Paget Disease of the Breast, Breast Cancer, Angiosarcoma, and Bone Marrow Aspiration. Dr. Jiang is currently accepting new patients.

    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    27799 Medical Center Road, Suite 460, 
    Mission Viejo, CA 
     (1.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    George Miranda is a Hematologist Oncology provider practicing medicine in Mission Viejo, California. Dr. Miranda is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 33 other conditions, according to our data. His clinical expertise encompasses Familial Colorectal Cancer, Colorectal Cancer, Pleuropulmonary Blastoma, and Lung Cancer.

    Learn about our expert tiers
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    27799 Medical Center Road, Suite 460, 
    Mission Viejo, CA 
     (1.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    John Hu is a Hematologist Oncology provider practicing medicine in Mission Viejo, California. Dr. Hu is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Metastatic Brain Tumor, Lung Cancer, Pleuropulmonary Blastoma, and Pulmonary Embolism. Dr. Hu is currently accepting new patients.

    Experienced in HER-2 Positive Breast Cancer
    Radiation Oncology
    Experienced in HER-2 Positive Breast Cancer
    Radiation Oncology
    27799 Medical Center Road, Suite 120, 
    Mission Viejo, CA 
     (1.1 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients

    Gene-fu Liu is a Radiation Oncologist practicing medicine in Mission Viejo, California. He has been practicing medicine for over 17 years. Dr. Liu is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Primitive Neuroectodermal Tumor (PNET), Posterior Fossa Tumor, Metastatic Brain Tumor, and Adenoid Cystic Carcinoma. Dr. Liu is currently accepting new patients.

    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Howard Cheng is a Hematologist Oncology provider practicing medicine in Laguna Hills, California. Dr. Cheng is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 36 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Non-Hodgkin Lymphoma, and Lung Cancer. Dr. Cheng is currently accepting new patients.

    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    Experienced in HER-2 Positive Breast Cancer
    Hematology Oncology
    26732 Crown Valley Parkway, Suite 271, 
    Mission Viejo, CA 
     (2.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Nawid Sarwari is a Hematologist Oncology provider practicing medicine in Mission Viejo, California. Dr. Sarwari is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Drug-Induced Thrombocytopenia, Thrombocytopenia, Familial Colorectal Cancer, and Breast Cancer. Dr. Sarwari is currently accepting new patients.

    Advanced in HER-2 Positive Breast Cancer
    Radiation Oncology
    Advanced in HER-2 Positive Breast Cancer
    Radiation Oncology

    Office

    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English

    Linda Chan is a Radiation Oncologist practicing medicine in Laguna Hills, California. Dr. Chan is rated as an Advanced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 21 other conditions, according to our data. Her clinical expertise encompasses Angiosarcoma, Breast Cancer, Squamous Cell Lung Carcinoma, and Lung Adenocarcinoma.

    Advanced in HER-2 Positive Breast Cancer
    Radiation Oncology
    Advanced in HER-2 Positive Breast Cancer
    Radiation Oncology

    Memorial Radiation Oncology Medical

    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English

    Sharon Lee is a Radiation Oncologist practicing medicine in Laguna Hills, California. Dr. Lee is rated as an Advanced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Angiosarcoma, HER-2 Positive Breast Cancer, and Intraductal Papilloma.

    Advanced in HER-2 Positive Breast Cancer
    Advanced in HER-2 Positive Breast Cancer

    MemorialCare Medical Group - Laguna Hills

    24411 Health Center Dr Ste 200, 
    Laguna Hills, CA 
     (3.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Bhavana Pathak is an Oncologist practicing medicine in Laguna Hills, California. Dr. Pathak is rated as an Advanced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses HER-2 Positive Breast Cancer, Breast Cancer, Paget Disease of the Breast, and Inflammatory Breast Cancer. Dr. Pathak is currently accepting new patients.

    Experienced in HER-2 Positive Breast Cancer
    Hematology | Oncology
    Experienced in HER-2 Positive Breast Cancer
    Hematology | Oncology

    Edward A. Wagner, MD

    24411 Health Center Dr Ste 620, 
    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Edward Wagner is a Hematologist and an Oncologist practicing medicine in Laguna Hills, California. Dr. Wagner is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Follicular Lymphoma, Paget Disease of the Breast, Breast Cancer, and Familial Colorectal Cancer. Dr. Wagner is currently accepting new patients.

    Experienced in HER-2 Positive Breast Cancer
    Experienced in HER-2 Positive Breast Cancer

    MemorialCare Medical Group - Laguna Hills

    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Amy Bremner is an Oncologist practicing medicine in Laguna Hills, California. Dr. Bremner is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive 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, Lymphadenectomy, and Mastectomy. Dr. Bremner is currently accepting new patients.

    Experienced in HER-2 Positive Breast Cancer
    Radiation Oncology
    Experienced in HER-2 Positive Breast Cancer
    Radiation Oncology

    Memorial Radiation Oncology Medical

    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English

    Andrew Zhang is a Radiation Oncologist practicing medicine in Laguna Hills, California. Dr. Zhang is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. His clinical expertise encompasses Prostate Cancer, Breast Cancer, HER-2 Positive Breast Cancer, and Familial Prostate Cancer.

    Experienced in HER-2 Positive Breast Cancer
    Experienced in HER-2 Positive Breast Cancer

    UCLA Health Laguna Hills Cancer Care

    24302 Paseo De Valencia Ste 200, 
    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English

    Merry Tetef is an Oncologist practicing medicine in Laguna Hills, California. Dr. Tetef is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Angiosarcoma, and Inflammatory Breast Cancer.

    Experienced in HER-2 Positive Breast Cancer
    Internal Medicine
    Experienced in HER-2 Positive Breast Cancer
    Internal Medicine

    Oncology Physicians Network Of California PC

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    24+ years
    Languages Spoken:
    English
    Offers Telehealth

    Peyman Salimi is an Internal Medicine provider practicing medicine in Laguna Hills, California. He has been practicing medicine for over 24 years. Dr. Salimi is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Idiopathic Pulmonary Hemosiderosis, Hemosiderosis, Splenic Neoplasm, and Anemia. Dr. Salimi is board certified in American Board Of Internal Medicine.

    Experienced in HER-2 Positive Breast Cancer
    Internal Medicine
    Experienced in HER-2 Positive Breast Cancer
    Internal Medicine

    Oncology Physicians Network Of California PC

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    11+ years
    Languages Spoken:
    English
    Offers Telehealth

    Pete Pow is an Internal Medicine provider practicing medicine in Laguna Hills, California. He has been practicing medicine for over 11 years. Dr. Pow is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Splenic Neoplasm, Deep Vein Thrombosis, Angiosarcoma, and Inflammatory Breast Cancer. Dr. Pow is board certified in American Board Internal Medicine.

    Experienced in HER-2 Positive Breast Cancer
    Experienced in HER-2 Positive Breast Cancer

    Sarah Hassan, MD

    24411 Health Center Dr Ste 320, 
    Laguna Hills, CA 
     (3.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sarah Hassan is an Oncologist practicing medicine in Laguna Hills, California. Dr. Hassan is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Inflammatory Breast Cancer, Angiosarcoma, Breast Cancer, and Paget Disease of the Breast.

    Experienced in HER-2 Positive Breast Cancer
    Experienced in HER-2 Positive Breast Cancer

    MemorialCare Medical Group - Laguna Hills

    24411 Health Center Dr Ste 200, 
    Laguna Hills, CA 
     (3.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Shawndeep Tung is an Oncologist practicing medicine in Laguna Hills, California. Dr. Tung is rated as an Experienced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. His clinical expertise encompasses Breast Cancer, Breast Infection, Fibrocystic Breast Disease, Intraductal Papilloma, and Mastectomy. Dr. Tung is currently accepting new patients.

    Advanced in HER-2 Positive Breast Cancer
    Advanced in HER-2 Positive Breast Cancer

    City Of Hope Orange County Lennar Foundation Cancer Center

    Irvine, CA 
     (6.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Irene Kang is an Oncologist practicing medicine in Irvine, California. Dr. Kang is rated as an Advanced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Inflammatory Breast Cancer, Paget Disease of the Breast, and Angiosarcoma.

    Advanced in HER-2 Positive Breast Cancer
    Surgical Oncology
    Advanced in HER-2 Positive Breast Cancer
    Surgical Oncology

    Jennifer Tseng, M.D.

    Irvine, CA 
     (6.4 miles away)
    Languages Spoken:
    English

    Jennifer Tseng is a Surgical Oncologist practicing medicine in Irvine, California. Dr. Tseng is rated as an Advanced provider by MediFind in the treatment of HER-2 Positive Breast Cancer. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Angiosarcoma, Mastectomy, and Pancreaticoduodenectomy.

    Showing 1-20 of 38

    Last Updated: 04/28/2026

    What is the definition of HER-2 Positive Breast Cancer?

    HER2-positive breast cancer is a subtype of breast cancer that contains human epidermal growth factor receptor 2 (HER2), which is a protein that increases the growth of cancer cells. One out of five breast cancers contain the HER2 protein. Eighteen-to-twenty percent of invasive breast cancers are HER2-positive, which are more aggressive than other breast cancers, more likely to spread and relapse, and have resulted in a decreased survival rate in the past. While previously considered to be the most aggressive type of breast cancer, HER-2 positive breast cancer can now be treated with new biologic targeted therapies that have significantly improved outcomes. HER2-positive breast cancer is categorized in stages that take into account the diameter of the tumor, whether the cancer has spread to axillary (underarm) lymph nodes, and whether the cancer has spread to other organs, such as the liver, lung, brain and bone. Staging allows for treatment plans that target each patient’s individual breast cancer disease. Early breast cancers are staged based on the following criteria: Stage 0 – Ductal cancer in situ (DCIS), or a noninvasive breast cancer that is limited to the ducts. Stage I (A/B) – Cancer has spread from ducts to the surrounding fatty breast tissue. Tumor is smaller than 2 centimeters and has not spread to lymph nodes. Stage II (IIA/B) – Cancer has spread from ducts to the surrounding fatty breast tissue and may have spread to near lymph nodes. Tumor is between 2-to-5 centimeters wide. Advanced breast cancers are staged based on the following criteria: Stage III (IIIA/B) – The tumor is larger than 5 centimeters, cancer may or may not have spread to lymph nodes, or the tumor is smaller, and cancer has spread to lymph nodes. Stage IV – Metastatic Breast Cancer. Cancer has spread to lymph nodes and other parts of the body, with other organs affected, such as liver, lungs, brain, or bones.

    When should I see a HER-2 Positive Breast Cancer doctor near Mission Viejo, CA?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a HER-2 Positive Breast Cancer doctor near Mission Viejo, CA?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank HER-2 Positive Breast Cancer doctors near Mission Viejo, CA?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by HER-2 Positive Breast Cancer doctors near Mission Viejo, CA?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a HER-2 Positive Breast Cancer doctor near Mission Viejo, CA?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the HER-2 Positive Breast Cancer doctor search results page. 

    Why is it important to get a second opinion from a different HER-2 Positive Breast Cancer doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a HER-2 Positive Breast Cancer doctor near Mission Viejo, CA?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my HER-2 Positive Breast Cancer doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my HER-2 Positive Breast Cancer doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female HER-2 Positive Breast Cancer doctors near Mission Viejo, CA?

    Look for the filter feature on the left side of the HER-2 Positive Breast Cancer doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a HER-2 Positive Breast Cancer doctor that offers video calls?

    Look for the filter feature on the left-side of the HER-2 Positive Breast Cancer doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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