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    Last Updated: 02/22/2026

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    MediFind found 384 doctor with experience in Thiopurine S-Methyltransferase Deficiency. Of these, 275 are Experienced, 106 are Advanced and 3 are Distinguished.

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    384 providers found
      William Dicuccio
      Advanced in Thiopurine S-Methyltransferase Deficiency
      Family Medicine
      Advanced in Thiopurine S-Methyltransferase Deficiency
      Family Medicine

      Primary Care Associates Of Butler PC

      480 E Jefferson St, 
      Butler, PA 
      Languages Spoken:
      English
      Offers Telehealth

      William Dicuccio is a primary care provider, practicing in Family Medicine in Butler, Pennsylvania. Dr. Dicuccio is rated as an Advanced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Sialuria, Phosphomannoisomerase Deficiency, PMM2-Congenital Disorder of Glycosylation, and Sialic Acid Storage Disease.

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

      University Primary Care Practices Inc

      11100 Euclid Ave, 
      Cleveland, OH 
      Languages Spoken:
      English
      Accepting New Patients

      Laura Davis-Luarde is a primary care provider, practicing in Internal Medicine in Cleveland, Ohio. Dr. Davis-Luarde is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Her top areas of expertise are Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypothyroidism, and Endoscopy. Dr. Davis-Luarde is currently accepting new patients.

      Distinguished in Thiopurine S-Methyltransferase Deficiency
      Distinguished in Thiopurine S-Methyltransferase Deficiency
      Sittard, LI, NL 

      Piet Hooymans practices in Sittard, Netherlands. Hooymans is rated as a Distinguished expert by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Their top areas of expertise are Thiopurine S-Methyltransferase Deficiency, Viral Gastroenteritis, and Colitis.

      Learn about our expert tiers
      Distinguished in Thiopurine S-Methyltransferase Deficiency
      Distinguished in Thiopurine S-Methyltransferase Deficiency
      Maastricht, LI, NL 

      Luc Derijks practices in Maastricht, Netherlands. Derijks is rated as a Distinguished expert by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Their top areas of expertise are Thiopurine S-Methyltransferase Deficiency, Viral Gastroenteritis, Crohn's Disease, and Hemorrhagic Proctocolitis.

      Distinguished in Thiopurine S-Methyltransferase Deficiency
      Internal Medicine
      Distinguished in Thiopurine S-Methyltransferase Deficiency
      Internal Medicine
      20311 Sw Acacia St, Suite 140, 
      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. Dr. Robertson has been practicing medicine for over 44 years and is rated as a Distinguished provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Hyperphenylalaninemia Due to Dehydratase Deficiency, Complement Component 2 Deficiency, Thiopurine S-Methyltransferase Deficiency, Primary Immunodeficiency (PID), and Gastrostomy.

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

      Whitesburg Medical Center Pharmacy

      226 Medical Plaza Ln, 
      Whitesburg, KY 
      Languages Spoken:
      English

      Van Breeding is a primary care provider, practicing in Family Medicine in Whitesburg, Kentucky. Dr. Breeding is rated as an Advanced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Gout, Chronic Obstructive Pulmonary Disease (COPD), Lung Metastases, Gastrostomy, and Advanced Bronchoscopy.

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

      Office

      115 And Switzgable Dr, 
      Brodheadsville, PA 
      Languages Spoken:
      English

      Frank Romascavage is a primary care provider, practicing in Family Medicine in Brodheadsville, Pennsylvania. Dr. Romascavage is rated as an Advanced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Chronic Cough, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.

      Marc R. Lewin
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Family Medicine
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Family Medicine

      Atrium Health Primary Care Carmel Family Medicine

      10000 Park Cedar Drive, 
      Charlotte, NC 
      Languages Spoken:
      English
      Offers Telehealth

      Marc Lewin is a primary care provider, practicing in Family Medicine in Charlotte, North Carolina. Dr. Lewin is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are High Cholesterol, Episcleritis, Familial Combined Hyperlipidemia, and Xanthoma.

      Judy M. Cheng
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Experienced in Thiopurine S-Methyltransferase Deficiency

      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 in San Mateo, California. Dr. Cheng is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Her top areas of expertise are Lung Adenocarcinoma, Small Cell Lung Cancer (SCLC), Lung Nodules, and Non-Small Cell Lung Cancer (NSCLC). Dr. Cheng is currently accepting new patients.

      Allen J. Lloyd
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Internal Medicine
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Internal Medicine

      Carolinas Medical Center

      1000 Blythe Blvd., 
      Charlotte, NC 
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Allen Lloyd is a primary care provider, practicing in Internal Medicine in Charlotte, North Carolina. Dr. Lloyd is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Acute Adrenal Crisis, Thiopurine S-Methyltransferase Deficiency, Hyperphenylalaninemia Due to Dehydratase Deficiency, Gastrostomy, and Endoscopy. Dr. Lloyd is currently accepting new patients.

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

      Endeavor Health Medical Group

      1000 Central St., Suite 640, 
      Evanston, IL 
      Languages Spoken:
      English, Greek
      Offers Telehealth

      Angela A. Bicos, MD, an internal medicine physician at Endeavor Health, is board certified in internal medicine and provides primary care for adults. She focuses on preventive health, chronic disease management and the diagnosis and treatment of a broad range of adult conditions. Dr. Bicos speaks English and Greek, allowing her to build stronger communication with patients from diverse backgrounds. Dr. Bicos is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Her top areas of expertise are Sjogren Syndrome, Osteoporosis, Postmenopausal Osteoporosis, and Dementia.

      Doron Feinsilber
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Hematology Oncology
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Hematology Oncology

      Egil And Pauline Braathen Center/Maroone Cancer Center

      2950 Cleveland Clinic Boulevard, 
      Weston, FL 
      Experience:
      26+ years
      Languages Spoken:
      English
      Offers Telehealth

      Doron Feinsilber is a Hematologist Oncology provider in Weston, Florida. Dr. Feinsilber has been practicing medicine for over 26 years and is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Iron Deficiency Anemia, Childhood Iron Deficiency Anemia, Acute Mountain Sickness, Idiopathic Pulmonary Hemosiderosis, and Thymectomy.

      Brian C. Bai
      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. His top areas of expertise are Sitosterolemia, Familial Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

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

      Endeavor Health Medical Group

      1000 Central St., Suite 640, 
      Evanston, IL 
      Languages Spoken:
      English
      Offers Telehealth

      Valli P. Stewart, MD, an internal medicine physician at Endeavor Health, provides primary care focused on adult health, preventive services and chronic disease management. She collaborates with patients to develop long-term care plans that support their overall wellbeing and quality of life. Dr. Stewart is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Her top areas of expertise are Osteoarthritis, Small Lymphocytic Lymphoma (SLL), Vertigo, and Melorheostosis.

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

      Sugarloaf Medical PC

      1300 Peachtree Industrial Blvd, Suite 4201, 
      Suwanee, GA 
      Languages Spoken:
      English
      Offers Telehealth

      Shukri George is a primary care provider, practicing in Internal Medicine in Suwanee, Georgia. Dr. George is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Cirrhosis, High Cholesterol, Familial Combined Hyperlipidemia, and Enlarged Liver.

      Robert B. Barnes
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Family Medicine
      Experienced in Thiopurine S-Methyltransferase Deficiency
      Family Medicine

      East Penn Medical Practice, Inc

      723 Chestnut Street, 
      Emmaus, PA 
      Languages Spoken:
      English, Spanish
      Offers Telehealth

      Robert Barnes is a primary care provider, practicing in Family Medicine in Emmaus, Pennsylvania. Dr. Barnes is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Cirrhosis.

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

      Atrium Health CMC Myers Park Internal Medicine

      1350 S. Kings Drive, 
      Charlotte, NC 
      Languages Spoken:
      English
      Accepting New Patients

      Kenneth Singhel is a primary care provider, practicing in Internal Medicine in Charlotte, North Carolina. Dr. Singhel is rated as an Experienced provider by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. His top areas of expertise are Acute Intermittent Porphyria, Acute Hepatic Porphyria (AHP), Porphyria, Sickle Cell Disease, and Pancreatectomy. Dr. Singhel is currently accepting new patients.

      Donald J. Hole
      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. His top areas of expertise are Postmenopausal Osteoporosis, Osteoporosis, Cirrhosis, and Familial Combined Hyperlipidemia.

      Christien J. Van Der Woude
      Advanced in Thiopurine S-Methyltransferase Deficiency
      Advanced in Thiopurine S-Methyltransferase Deficiency

      Erasmus MC

      Rotterdam, ZH, NL 

      Christien Van Der Woude practices in Rotterdam, Netherlands. Van Der Woude is rated as an Advanced expert by MediFind in the treatment of Thiopurine S-Methyltransferase Deficiency. Their top areas of expertise are Viral Gastroenteritis, Crohn's Disease, Ulcerative Colitis, Endoscopy, and Colonoscopy.

      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. His top areas of expertise are Neurotoxicity Syndromes, Sepsis, Chronic Erosive Gastritis, Gastrostomy, and Endoscopy.

      Showing 1-20 of 384

      Last Updated: 02/22/2026

      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 me?

      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 me?

      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 me?

      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 me?

      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 me?

      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 me?

      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 me?

      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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