The 20 Best Thiopurine S-Methyltransferase Deficiency Doctors Near Me in Los Angeles, CA

Find the Top Thiopurine S-Methyltransferase Deficiency Experts and Specialists

Last Updated: 06/30/2026

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MediFind found 47 doctor with experience in Thiopurine S-Methyltransferase Deficiency near Los Angeles, CA. Of these, 43 are Experienced, 3 are Advanced and 1 are Distinguished.

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47 providers found
    Distinguished in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Distinguished in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Gregory A Robertson MD A Professional Medical Corp.

    20311 SW Acacia St Ste 100, 
    Newport Beach, CA 
    Experience:
    44+ years
    Languages Spoken:
    English
    Offers Telehealth

    Gregory Robertson is a primary care provider, practicing in Internal Medicine in Newport Beach, California. He has been practicing medicine for over 44 years. Dr. Robertson is rated as a Distinguished provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Hyperphenylalaninemia Due to Dehydratase Deficiency, Complement Component 2 Deficiency, Thiopurine S-Methyltransferase Deficiency, Primary Immunodeficiency (PID), and Gastrostomy.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Referral may be required

    Sunnyvale Center (301)

    301 Old San Francisco Road, 
    Sunnyvale, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Edmund Tai is an Oncologist practicing medicine in Sunnyvale, California. Dr. Tai is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 95 other conditions, according to our data. His clinical expertise encompasses Anemia, Vitamin D Deficiency, Iron Deficiency Anemia, and Thrombocytopenia. Dr. Tai is board certified in Medical Oncology - Board Certified and In Medical Oncology And Internal Medicine. Dr. Tai is currently accepting new patients.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Referral may be required

    San Mateo Care Center

    50 South San Mateo Drive, Suite 100, 
    San Mateo, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Judy Cheng is a Hematologist practicing medicine in San Mateo, California. Dr. Cheng is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Lung Adenocarcinoma, Small Cell Lung Cancer (SCLC), Lung Nodules, and Non-Small Cell Lung Cancer (NSCLC). Dr. Cheng is board certified in Hematology Medical Oncology. Dr. Cheng is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine
    3569 Round Barn Circle, 
    Santa Rosa, CA 
    Experience:
    17+ years
    Languages Spoken:
    English

    James Wu is a primary care provider, practicing in Family Medicine in Santa Rosa, California. He has been practicing medicine for over 17 years. Dr. Wu is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Maturity Onset Diabetes of the Young, Chronic Pain, Type 2 Diabetes (T2D), Endoscopy, and Intrauterine Device Insertion.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Oncology | Hematology
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Oncology | Hematology
    Referral may be required
    2080 Century Park East, Suite 1005, 
    Los Angeles, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Shahrooz Eshaghian is a Hematologist and an Oncologist practicing medicine in Los Angeles, California. Dr. Eshaghian is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 93 other conditions, according to our data. His clinical expertise encompasses Multiple Myeloma, Bone Tumor, Deep Vein Thrombosis, Thrombocytopenia, and Bone Marrow Aspiration. Dr. Eshaghian is currently accepting new patients.

    Advanced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Advanced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Cedars-Sinai Medical Center

    8700 Beverly Blvd, 
    West Hollywood, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Neeka Shayan is a primary care provider, practicing in Internal Medicine in West Hollywood, California. Dr. Shayan is rated as an Advanced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Complement Component 2 Deficiency, Hyperphenylalaninemia Due to Dehydratase Deficiency, Episcleritis, Bone Marrow Aspiration, and Endoscopy.

    Advanced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Advanced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Office

    17360 Brookhurst St, 
    Fountain Valley, CA 
    Languages Spoken:
    English

    Kimberly Motta is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Motta is rated as an Advanced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Hereditary Angioedema, Complement Component 2 Deficiency, Glutamate Decarboxylase Deficiency, Gastrostomy, and Hip Replacement.

    Advanced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine
    Advanced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine

    American Heritage Hospice #2 Inc

    2390 E Bidwell St Ste 300, 
    Folsom, CA 
    Languages Spoken:
    English

    Ingrid Grove is a primary care provider, practicing in Family Medicine in Folsom, California. Dr. Grove is rated as an Advanced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Hyperphenylalaninemia Due to Dehydratase Deficiency, Guanidinoacetate Methyltransferase Deficiency, Hereditary Angioedema, and Thiopurine S-Methyltransferase Deficiency.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine

    Brian C. Bai, MD Private Practice

    331 South C St, Ste A, 
    Oxnard, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Bai is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Sitosterolemia, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Familial Hypertension. Dr. Bai is board certified in Family Medicine. Dr. Bai is currently accepting new patients.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Family Medicine

    Okerblom, Voegele, And Hole MD

    915 E Stowell Rd, Ste C, 
    Santa Maria, CA 
    Languages Spoken:
    English
    Accepting New Patients

    I strive to provide my patients with the best medical care possible. Dr. Hole is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Osteoporosis, Postmenopausal Osteoporosis, Cirrhosis, and Familial Combined Hyperlipidemia. Dr. Hole is board certified in Family Medicine. Dr. Hole is currently accepting new patients.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Internal Medicine And Wellness Therapies Medical Office Inc.

    6815 Fair Oaks Blvd, 
    Carmichael, CA 
    Experience:
    44+ years
    Languages Spoken:
    English
    Offers Telehealth

    Kathrine Bisharat is a primary care provider, practicing in Internal Medicine in Carmichael, California. She has been practicing medicine for over 44 years. Dr. Bisharat is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 17 other conditions, according to our data. Her clinical expertise encompasses Degos Disease, Methylmalonic Acidemia with Homocystinuria, Homocystinuria, and Inborn Amino Acid Metabolism Disorder.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Harold B Rose

    8733 Beverly Blvd Ste 306, 
    West Hollywood, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Shamim Shakibai is a primary care provider, practicing in Internal Medicine in West Hollywood, California. Dr. Shakibai is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Neurotoxicity Syndromes, Sepsis, Chronic Erosive Gastritis, Gastrostomy, and Endoscopy.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Kaiser Permanente Riverside Medical Center

    10800 Magnolia Avenue, 
    Riverside, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Kyle Basical is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Basical is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His clinical expertise encompasses Hyperphenylalaninemia Due to Dehydratase Deficiency, Complement Component 2 Deficiency, Properdin Deficiency, and Thiopurine S-Methyltransferase Deficiency. Dr. Basical is currently accepting new patients.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    John K F Debeixedon MD Inc.

    675 S Arroyo Pkwy, 
    Pasadena, CA 
    Languages Spoken:
    English

    Thanda Zaw is a primary care provider, practicing in Internal Medicine in Pasadena, California. Dr. Zaw is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Type 2 Diabetes (T2D), Osteomyelitis in Children, Complement Component 2 Deficiency, and Hereditary Angioedema.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Cedars-Sinai Medical Center

    8700 Beverly Blvd, 
    West Hollywood, CA 
    Experience:
    10+ years
    Languages Spoken:
    English
    Offers Telehealth

    James Yang is a primary care provider, practicing in Internal Medicine in West Hollywood, California. He has been practicing medicine for over 10 years. Dr. Yang is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Episcleritis, Sickle Cell Disease, Necrosis, Colonoscopy, and Endoscopy.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Imaging Services At Hoover Pavilion

    211 Quarry Rd, 
    Palo Alto, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Jacqueline Tai is a primary care provider, practicing in Internal Medicine in Palo Alto, California. Dr. Tai is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Her clinical expertise encompasses Guanidinoacetate Methyltransferase Deficiency, Glutamate Decarboxylase Deficiency, Hyperphenylalaninemia Due to Dehydratase Deficiency, and Hereditary Angioedema.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Referral may be required

    University Of California San Francisco

    995 Potrero Ave, 
    San Francisco, CA 
    Languages Spoken:
    English

    Niharika Dixit is a Hematologist practicing medicine in San Francisco, California. Dr. Dixit is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Inflammatory Breast Cancer, Paget Disease of the Breast, Breast Cancer, and Hypereosinophilic Syndrome.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Cedars-Sinai Medical Center

    8700 Beverly Blvd, 
    West Hollywood, CA 
    Languages Spoken:
    English

    Kanishka Wijegunaratne is a primary care provider, practicing in Internal Medicine in West Hollywood, California. Dr. Wijegunaratne is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Acute Kidney Failure, Childhood Pancreatitis, Heart Attack, Endoscopy, and Gastrostomy.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Harold B Rose

    8733 Beverly Blvd Ste 306, 
    West Hollywood, CA 
    Experience:
    10+ years
    Languages Spoken:
    English

    Evan Gordon is a primary care provider, practicing in Internal Medicine in West Hollywood, California. He has been practicing medicine for over 10 years. Dr. Gordon is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Cellulitis, Episcleritis, Sepsis, Endoscopy, and Gastrostomy.

    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine
    Experienced in Thiopurine S-Methyltransferase Deficiency
    Internal Medicine

    Torrance Memorial Medical Center

    3330 Lomita Blvd, 
    Torrance, CA 
    Languages Spoken:
    English

    Bhavesh Ramani is a primary care provider, practicing in Internal Medicine in Torrance, California. Dr. Ramani is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses D-Minus Hemolytic Uremic Syndrome, Sepsis, Sickle Cell Disease, and Gastrointestinal Bleeding.

    Showing 1-20 of 47

    Last Updated: 06/30/2026

    What is the definition of Thiopurine S-Methyltransferase Deficiency?

    Thiopurine S-methyltransferase (TPMT) deficiency is a condition characterized by significantly reduced activity of an enzyme that helps the body process drugs called thiopurines. These drugs, which include 6-thioguanine, 6-mercaptopurine, and azathioprine, inhibit (suppress) the body's immune system. Thiopurine drugs are used to treat some autoimmune disorders, including Crohn's disease and rheumatoid arthritis, which occur when the immune system malfunctions. These drugs are also used to treat several forms of cancer, particularly cancers of blood-forming tissue (leukemias) and cancers of immune system cells (lymphomas). Additionally, thiopurine drugs are used in organ transplant recipients to help prevent the immune system from attacking the transplanted organ.

    When should I see a Thiopurine S-Methyltransferase Deficiency doctor near Los Angeles, 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 Thiopurine S-Methyltransferase Deficiency doctor near Los Angeles, 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 Thiopurine S-Methyltransferase Deficiency doctors near Los Angeles, 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 Thiopurine S-Methyltransferase Deficiency doctors near Los Angeles, 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 Thiopurine S-Methyltransferase Deficiency doctor near Los Angeles, 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 Thiopurine S-Methyltransferase Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Thiopurine S-Methyltransferase Deficiency 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 Thiopurine S-Methyltransferase Deficiency doctor near Los Angeles, 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 Thiopurine S-Methyltransferase Deficiency 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 Thiopurine S-Methyltransferase Deficiency 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 Thiopurine S-Methyltransferase Deficiency doctors near Los Angeles, CA?

    Look for the filter feature on the left side of the Thiopurine S-Methyltransferase Deficiency 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 Thiopurine S-Methyltransferase Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Thiopurine S-Methyltransferase Deficiency 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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