The 20 Best Richter Syndrome Doctors Near Me in Orange, CA

Find the Top Richter Syndrome Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 89 doctor with experience in Richter Syndrome near Orange, CA. Of these, 74 are Experienced, 10 are Advanced and 5 are Distinguished.

Location
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89 providers found
    Advanced in Richter Syndrome
    Hematology Oncology
    Advanced in Richter Syndrome
    Hematology Oncology
    1010 West La Veta Avenue, Suite 200, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Timothy Byun is a Hematologist Oncology provider practicing medicine in Orange, California. Dr. Byun is rated as an Advanced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Large-Cell Immunoblastic Lymphoma, ALK-Positive Non-Small Cell Lung Cancer, Diffuse Large B-Cell Lymphoma (DLBCL), Non-Hodgkin Lymphoma, and Bone Marrow Aspiration. Dr. Byun is currently accepting new patients.

    Distinguished in Richter Syndrome
    Distinguished in Richter Syndrome

    UCI Health

    101 The City Dr S, 
    Orange, CA 
     (2.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Catherine Coombs is a Hematologist practicing medicine in Orange, California. Dr. Coombs is rated as a Distinguished provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Chronic Lymphocytic Leukemia (CLL), Chronic B-Cell Leukemia (CBCL), Richter Syndrome, Acute Myeloblastic Leukemia without Maturation, and Bone Marrow Aspiration.

    Experienced in Richter Syndrome
    Hematology Oncology
    Experienced in Richter Syndrome
    Hematology Oncology
    1100 West Stewart Drive, 
    Orange, CA 
     (0.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    John Wong is a Hematologist Oncology provider practicing medicine in Orange, California. Dr. Wong is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Large-Cell Immunoblastic Lymphoma, Monoclonal Gammopathy of Undetermined Significance (MGUS), Burkitt Lymphoma, and Diffuse Large B-Cell Lymphoma (DLBCL). Dr. Wong is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Richter Syndrome
    Hematology Oncology
    Experienced in Richter Syndrome
    Hematology Oncology
    1010 West La Veta Avenue, Suite 200, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Tariq Mahmood is a Hematologist Oncology provider practicing medicine in Orange, California. Dr. Mahmood is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Familial Colorectal Cancer, and Angiosarcoma. Dr. Mahmood is currently accepting new patients.

    Experienced in Richter Syndrome
    Hematology Oncology
    Experienced in Richter Syndrome
    Hematology Oncology
    1010 West La Veta Avenue, Suite 200, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Sam Huang is a Hematologist Oncology provider practicing medicine in Orange, California. Dr. Huang is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Squamous Cell Lung Carcinoma, ALK-Positive Non-Small Cell Lung Cancer, Lung Adenocarcinoma, and Small Cell Lung Cancer (SCLC). Dr. Huang is currently accepting new patients.

    Experienced in Richter Syndrome
    Hematology Oncology
    Experienced in Richter Syndrome
    Hematology Oncology
    363 South Main Street, Suite 485, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Stavroula Otis is a Hematologist Oncology provider practicing medicine in Orange, California. Dr. Otis is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Follicular Lymphoma, Myelodysplastic Syndrome (MDS), Agranulocytosis, and Anemia. Dr. Otis is currently accepting new patients.

    Experienced in Richter Syndrome
    Hematology Oncology
    Experienced in Richter Syndrome
    Hematology Oncology
    1010 West La Veta Avenue, Suite 200, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Xinyu Nan is a Hematologist Oncology provider practicing medicine in Orange, California. Dr. Nan is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Deep Vein Thrombosis, Familial Colorectal Cancer, Inflammatory Breast Cancer, Colorectal Cancer, and Bone Marrow Aspiration. Dr. Nan is currently accepting new patients.

    Experienced in Richter Syndrome
    Hematology Oncology
    Experienced in Richter Syndrome
    Hematology Oncology
    1010 West La Veta Avenue, Suite 200, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Madhavi Mummaneni is a Hematologist Oncology provider practicing medicine in Orange, California. Dr. Mummaneni is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 11 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Pleuropulmonary Blastoma, Inflammatory Breast Cancer, and Iron Deficiency Anemia. Dr. Mummaneni is currently accepting new patients.

    Advanced in Richter Syndrome
    Advanced in Richter Syndrome

    Office

    101 The City Dr S Bldg 23, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Lauren Pinter is a Hematologist practicing medicine in Orange, California. Dr. Pinter is rated as an Advanced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 30 other conditions, according to our data. Her clinical expertise encompasses T-Cell Lymphoma, Mycosis Fungoides, Peripheral T-Cell Lymphoma, Non-Hodgkin Lymphoma, and Bone Marrow Transplant.

    Advanced in Richter Syndrome
    Hematology Oncology | Hematology
    Advanced in Richter Syndrome
    Hematology Oncology | Hematology

    Uc Regents

    101 The City Dr S, 
    Orange, CA 
     (2.0 miles away)
    Languages Spoken:
    English

    Andreea Nanci is a Hematologist Oncology specialist and a Hematologist practicing medicine in Orange, California. Dr. Nanci is rated as an Advanced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 27 other conditions, according to our data. Her clinical expertise encompasses Inflammatory Breast Cancer, Paget Disease of the Breast, Angiosarcoma, and Chronic Lymphocytic Leukemia (CLL).

    Advanced in Richter Syndrome
    Hematology Oncology
    Advanced in Richter Syndrome
    Hematology Oncology
    2151 North Harbor Boulevard, Suite 2100, 
    Fullerton, CA 
     (8.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    David Park is a Hematologist Oncology provider practicing medicine in Fullerton, California. Dr. Park is rated as an Advanced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 53 other conditions, according to our data. His clinical expertise encompasses Small Cell Lung Cancer (SCLC), Non-Hodgkin Lymphoma, Lung Cancer, and Neuroendocrine Tumor. Dr. Park is currently accepting new patients.

    Advanced in Richter Syndrome
    Hematology Oncology
    Advanced in Richter Syndrome
    Hematology Oncology
    2151 North Harbor Boulevard, Suite 2100, 
    Fullerton, CA 
     (8.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Sanjay Sharma is a Hematologist Oncology provider practicing medicine in Fullerton, California. Dr. Sharma is rated as an Advanced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 39 other conditions, according to our data. His clinical expertise encompasses Paget Disease of the Breast, Inflammatory Breast Cancer, Angiosarcoma, and Clear Cell Sarcoma. Dr. Sharma is currently accepting new patients.

    Experienced in Richter Syndrome
    Internal Medicine
    Experienced in Richter Syndrome
    Internal Medicine

    Optum - Chapman

    845 E Chapman Ave, 
    Orange, CA 
     (0.6 miles away)
    Experience:
    44+ years
    Languages Spoken:
    English

    Thomas Hryniewicki is a primary care provider, practicing in Internal Medicine in Orange, California. He has been practicing medicine for over 44 years. Dr. Hryniewicki is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 43 other conditions, according to our data. His clinical expertise encompasses Purpura, Autoerythrocyte Sensitivity, Gardner-Diamond Syndrome, and Cirrhosis. Dr. Hryniewicki is board certified in American Board Of Internal Medicine.

    Experienced in Richter Syndrome
    Experienced in Richter Syndrome

    Hematology Oncology Medical Group

    1010 W La Veta Ave Ste 200, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English

    Tiberio Lindgren is an Oncologist practicing medicine in Orange, California. Dr. Lindgren is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 42 other conditions, according to our data. His clinical expertise encompasses Small Cell Lung Cancer (SCLC), Lung Cancer, Pleuropulmonary Blastoma, and Inflammatory Breast Cancer.

    Experienced in Richter Syndrome
    Experienced in Richter Syndrome

    Office

    101 The City Dr S Bldg 23, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English

    Paul Coluzzi is an Oncologist practicing medicine in Orange, California. Dr. Coluzzi is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Intraductal Papilloma, and Angiosarcoma.

    Experienced in Richter Syndrome
    Experienced in Richter Syndrome

    UCI Health Chao Family Comprehensive Cancer Center

    101 The City Dr S Bldg 23, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mohammadbagher Ziari is an Oncologist practicing medicine in Orange, California. Dr. Ziari is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Breast Cancer, and Paget Disease of the Breast.

    Experienced in Richter Syndrome
    Hematology | Oncology
    Experienced in Richter Syndrome
    Hematology | Oncology

    Hematology Oncology Medical Group

    1010 W La Veta Ave Ste 200, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Cindy Tran is a Hematologist and an Oncologist practicing medicine in Orange, California. Dr. Tran is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Paget Disease of the Breast, Breast Cancer, Angiosarcoma, and Inflammatory Breast Cancer.

    Experienced in Richter Syndrome
    Experienced in Richter Syndrome

    UCI Health

    101 The City Dr S, 
    Orange, CA 
     (2.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Deepa Jeyakumar is a Hematologist practicing medicine in Orange, California. Dr. Jeyakumar is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 25 other conditions, according to our data. Her clinical expertise encompasses Acute Myeloid Leukemia (AML), Acute Lymphoblastic Leukemia (ALL), Chronic T-Cell Leukemia (CTCL), Bone Marrow Aspiration, and Bone Marrow Transplant.

    Experienced in Richter Syndrome
    Experienced in Richter Syndrome

    UCI Health

    101 The City Dr S, 
    Orange, CA 
     (2.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Elizabeth Brem is a Hematologist practicing medicine in Orange, California. Dr. Brem is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 23 other conditions, according to our data. Her clinical expertise encompasses Non-Hodgkin Lymphoma, Diffuse Large B-Cell Lymphoma (DLBCL), Large-Cell Immunoblastic Lymphoma, Bone Marrow Aspiration, and Bone Marrow Transplant.

    Experienced in Richter Syndrome
    Nurse Practitioner
    Experienced in Richter Syndrome
    Nurse Practitioner

    Uc Regents Uci Depart Of Medicine

    101 The City Dr S, 
    Orange, CA 
     (2.0 miles away)
    Languages Spoken:
    English

    Julie Smith is a Nurse Practitioner practicing medicine in Orange, California. Ms. Smith is rated as an Experienced provider by MediFind in the treatment of Richter Syndrome. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Multiple Myeloma, Smoldering Multiple Myeloma, Aplastic Anemia, and Childhood Acute Myeloid Leukemia.

    Showing 1-20 of 89

    Last Updated: 04/28/2026

    What is the definition of Richter Syndrome?

    Richter syndrome is a rare condition in which chronic lymphocytic leukemia (CLL) changes into a fast-growing type of lymphoma. Symptoms of Richter syndrome can include fever, loss of weight and muscle mass, abdominal pain, and enlargement of the lymph nodes, liver, and spleen. Laboratory results may show anemia and low platelet counts (which can lead to easy bleeding and bruising).

    When should I see a Richter Syndrome doctor near Orange, 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 Richter Syndrome doctor near Orange, 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 Richter Syndrome doctors near Orange, 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 Richter Syndrome doctors near Orange, 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 Richter Syndrome doctor near Orange, 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 Richter Syndrome doctor search results page. 

    Why is it important to get a second opinion from a different Richter Syndrome 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 Richter Syndrome doctor near Orange, 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 Richter Syndrome 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 Richter Syndrome 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 Richter Syndrome doctors near Orange, CA?

    Look for the filter feature on the left side of the Richter Syndrome 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 Richter Syndrome doctor that offers video calls?

    Look for the filter feature on the left-side of the Richter Syndrome 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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