The 20 Best Vitamin B12 Deficiency Doctors Near Me in Napa, CA

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 21 doctor with experience in Vitamin B12 Deficiency near Napa, CA. Of these, 19 are Experienced and 2 are Advanced.

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21 providers found
    Experienced in Vitamin B12 Deficiency
    Endocrinology
    Experienced in Vitamin B12 Deficiency
    Endocrinology

    Office

    1735 Jefferson St, 
    Napa, CA 
     (0.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Do-eun Lee is an Endocrinologist practicing medicine in Napa, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 30 other conditions, according to our data. Her clinical expertise encompasses Eunuchoidism Familial Hypogonadotropic, Male Pseudohermaphroditism with Gynecomastia, Testicular Failure, and Hypogonadism Primary Partial Alopecia.

    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Hematology
    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Hematology
    1000 Trancas Street, Suite 1, 
    Napa, CA 
     (1.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Daniel Mirda is a Hematologist Oncology specialist and a Hematologist practicing medicine in Napa, California. Dr. Mirda is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 45 other conditions, according to our data. His clinical expertise encompasses Myelodysplastic Syndrome (MDS), Thrombocytopenia, Small Cell Lung Cancer (SCLC), Lung Adenocarcinoma, and Bone Marrow Aspiration. Dr. Mirda is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Family Medicine
    Experienced in Vitamin B12 Deficiency
    Family Medicine

    Office

    1155 Trancas St, 
    Napa, CA 
     (1.9 miles away)
    Experience:
    44+ years
    Languages Spoken:
    English
    Offers Telehealth

    Thomas Suard is a primary care provider, practicing in Family Medicine in Napa, California. He has been practicing medicine for over 44 years. Dr. Suard is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses High Cholesterol, Colorectal Cancer, Familial Colorectal Cancer, and Lung Cancer.

    Learn about our expert tiers
    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine

    Mark Stephen Singer MD House Calls Of

    3334 Sterling Ct, 
    Napa, CA 
     (2.7 miles away)
    Languages Spoken:
    English

    Mark Singer is an Internal Medicine provider practicing medicine in Napa, California. Dr. Singer is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Vitamin B12 Deficiency.

    Advanced in Vitamin B12 Deficiency
    Advanced in Vitamin B12 Deficiency
    2702 Low Court, 
    Fairfield, CA 
     (11.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Kanwaldeep Rasila is an Oncologist practicing medicine in Fairfield, California. Dr. Rasila is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 55 other conditions, according to our data. Her clinical expertise encompasses Pleuropulmonary Blastoma, Lung Cancer, Intraductal Papilloma, and Subacute Combined Degeneration. Dr. Rasila is board certified in Medical Oncology - Board Certified and Hematology - Board Certified. Dr. Rasila is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    2702 Low Ct., 
    Fairfield, CA 
     (11.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Yelena Krijanovski is an Oncologist practicing medicine in Fairfield, California. Dr. Krijanovski is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 41 other conditions, according to our data. Her clinical expertise encompasses Anemia, Lung Cancer, Small Cell Lung Cancer (SCLC), and Pleuropulmonary Blastoma.

    Advanced in Vitamin B12 Deficiency
    Oncology | Hematology Oncology
    Advanced in Vitamin B12 Deficiency
    Oncology | Hematology Oncology
    100 Hospital Drive, Suite 110, 
    Vallejo, CA 
     (11.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Chainarong Limvarapuss is a Hematologist Oncology specialist and an Oncologist practicing medicine in Vallejo, California. Dr. Limvarapuss is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 35 other conditions, according to our data. His clinical expertise encompasses Childhood Iron Deficiency Anemia, Paget Disease of the Breast, Inflammatory Breast Cancer, Bone Marrow Aspiration, and Endoscopy. Dr. Limvarapuss is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Family Medicine
    Experienced in Vitamin B12 Deficiency
    Family Medicine

    Northbay Health Primary Care-American Canyon

    416 Napa Junction Rd, 
    American Canyon, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Frances Benko is a primary care provider, practicing in Family Medicine in American Canyon, California. Dr. Benko is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. Her clinical expertise encompasses Opisthotonos, Muscle Spasms, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine

    Office

    Vallejo, CA 
     (8.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Voltaire Velarde is a primary care provider, practicing in Internal Medicine in Vallejo, California. Dr. Velarde is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Acute Kidney Failure, Diabetic Nephropathy, Chronic Cough, and Nephrosclerosis.

    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine

    Gurpreet S. Dhugga Medical Corporation

    5030 Business Center Dr Ste 130, 
    Fairfield, CA 
     (9.5 miles away)
    Languages Spoken:
    English

    Gurpreet Dhugga is a primary care provider, practicing in Internal Medicine in Fairfield, California. Dr. Dhugga is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 27 other conditions, according to our data. His clinical expertise encompasses Acute Kidney Failure, End-Stage Renal Disease (ESRD), Peptic Ulcer, and Necrosis.

    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine

    Campbell & Verducci

    670 3rd St W, 
    Sonoma, CA 
     (9.6 miles away)
    Languages Spoken:
    English

    Stuart Campbell is a primary care provider, practicing in Internal Medicine in Sonoma, California. Dr. Campbell is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Restrictive Cardiomyopathy (RCM), Osteoarthritis, Gastrointestinal Bleeding, Anemia, and Hip Replacement.

    Experienced in Vitamin B12 Deficiency
    Oncology | Hematology Oncology
    Experienced in Vitamin B12 Deficiency
    Oncology | Hematology Oncology
    100 Hospital Drive, Suite 110, 
    Vallejo, CA 
     (11.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ann Wexler is a Hematologist Oncology specialist and an Oncologist practicing medicine in Vallejo, California. Dr. Wexler is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 11 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Inflammatory Breast Cancer, and Colorectal Cancer. Dr. Wexler is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Oncology
    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Oncology
    100 Hospital Drive, Suite 110, 
    Vallejo, CA 
     (11.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Dyaneshbapu Ravindran is a Hematologist Oncology specialist and an Oncologist practicing medicine in Vallejo, California. Dr. Ravindran is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 74 other conditions, according to our data. His clinical expertise encompasses Paget Disease of the Breast, Richter Syndrome, Chronic Lymphocytic Leukemia (CLL), and Chronic B-Cell Leukemia (CBCL). Dr. Ravindran is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    2720 Low Court, 
    Fairfield, CA 
     (11.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Charbel Nadra is a primary care provider, practicing in Internal Medicine in Fairfield, California. Dr. Nadra is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 19 other conditions, according to our data. His clinical expertise encompasses Anemia, Peripheral Neuropathy, Thrombocytopenia, and Hyperthyroidism. Dr. Nadra is board certified in Internal Medicine - Board Certified. Dr. Nadra is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Family Medicine
    Experienced in Vitamin B12 Deficiency
    Family Medicine
    2720 Low Court, 
    Fairfield, CA 
     (11.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Mark Sullivan is a primary care provider, practicing in Family Medicine in Fairfield, California. Dr. Sullivan is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Squamous Cell Lung Carcinoma, EGFR Positive Lung Cancer, Lung Adenocarcinoma, and ALK-Positive Non-Small Cell Lung Cancer. Dr. Sullivan is board certified in Family Medicine - Board Certified. Dr. Sullivan is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    2720 Low Court, 
    Fairfield, CA 
     (11.7 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Offers Telehealth

    Ella Gupta is a primary care provider, practicing in Internal Medicine in Fairfield, California. She has been practicing medicine for over 18 years. Dr. Gupta is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Postmenopausal Osteoporosis, Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, and Anemia. Dr. Gupta is board certified in Internal Medicine.

    Experienced in Vitamin B12 Deficiency
    Family Medicine
    Experienced in Vitamin B12 Deficiency
    Family Medicine

    Sutter Medical Plaza Vallejo

    100 Hospital Drive, Suite 220, 
    Vallejo, CA 
     (11.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gabriel Chua is a primary care provider, practicing in Family Medicine in Vallejo, California. Dr. Chua is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Familial Neurocardiogenic Syncope, Fainting, Tarlov Cysts, and Glucocorticoid-Remediable Aldosteronism. Dr. Chua is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Family Medicine
    Experienced in Vitamin B12 Deficiency
    Family Medicine

    Office

    19270 Highway 12, 
    Sonoma, CA 
     (10.2 miles away)
    Languages Spoken:
    English

    Carol Ahern is a primary care provider, practicing in Family Medicine in Sonoma, California. Dr. Ahern is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Vitamin B12 Deficiency Anemia, Folate Deficiency, Multiple Carboxylase Deficiency, and Type 2 Diabetes (T2D).

    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine

    Marinhealth Primary Care | A UCSF Health Clinic

    651 1st St W Ste H, 
    Sonoma, CA 
     (10.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Brian Sebastian is a primary care provider, practicing in Internal Medicine in Sonoma, California. Dr. Sebastian is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Acute Cystitis, Osteoarthritis, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Vitamin B12 Deficiency
    Family Medicine
    Experienced in Vitamin B12 Deficiency
    Family Medicine

    Marinhealth Primary Care | A UCSF Health Clinic

    651 1st St W Ste H, 
    Sonoma, CA 
     (10.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Geeta Malik is a primary care provider, practicing in Family Medicine in Sonoma, California. Dr. Malik is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Acute Cystitis, Hypothyroidism, Renovascular Hypertension, and Nephrosclerosis.

    Showing 1-20 of 21

    Last Updated: 04/28/2026

    When should I see a Vitamin B12 Deficiency doctor near Napa, 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 Vitamin B12 Deficiency doctor near Napa, 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 Vitamin B12 Deficiency doctors near Napa, 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 Vitamin B12 Deficiency doctors near Napa, 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 Vitamin B12 Deficiency doctor near Napa, 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 Vitamin B12 Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Vitamin B12 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 Vitamin B12 Deficiency doctor near Napa, 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 Vitamin B12 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 Vitamin B12 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 Vitamin B12 Deficiency doctors near Napa, CA?

    Look for the filter feature on the left side of the Vitamin B12 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 Vitamin B12 Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Vitamin B12 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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