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

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 139 doctor with experience in Vitamin B12 Deficiency near Lakewood, CA. Of these, 122 are Experienced and 17 are Advanced.

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139 providers found
    Advanced in Vitamin B12 Deficiency
    Internal Medicine
    Advanced in Vitamin B12 Deficiency
    Internal Medicine

    Oncology Physicians Network Of California PC

    3747 Worsham Ave, 
    Long Beach, CA 
     (1.8 miles away)
    Experience:
    36+ years
    Languages Spoken:
    English
    Offers Telehealth

    Lihong Wu is an Internal Medicine provider practicing medicine in Long Beach, California. She has been practicing medicine for over 36 years. Dr. Wu is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 53 other conditions, according to our data. Her clinical expertise encompasses Familial Colorectal Cancer, Interstitial Nephritis, Liver Failure, Gastrostomy, and Endoscopy. Dr. Wu is board certified in American Board Internal Medicine.

    Advanced in Vitamin B12 Deficiency
    Internal Medicine
    Advanced in Vitamin B12 Deficiency
    Internal Medicine

    Oncology Physicians Network Of California PC

    3747 Worsham Ave, 
    Long Beach, CA 
     (1.8 miles away)
    Experience:
    31+ years
    Languages Spoken:
    English
    Offers Telehealth

    George Semeniuk is an Internal Medicine provider practicing medicine in Long Beach, California. He has been practicing medicine for over 31 years. Dr. Semeniuk is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 83 other conditions, according to our data. His clinical expertise encompasses Small Cell Lung Cancer (SCLC), Lung Cancer, Pleuropulmonary Blastoma, and Myelodysplastic Syndrome (MDS). Dr. Semeniuk is board certified in American Board Internal Medicine.

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

    Oncology Physicians Network Of California PC

    3747 Worsham Ave, 
    Long Beach, CA 
     (1.8 miles away)
    Experience:
    39+ years
    Languages Spoken:
    English
    Offers Telehealth

    Kiem Liem is an Internal Medicine provider practicing medicine in Long Beach, California. He has been practicing medicine for over 39 years. Dr. Liem is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD), Thrombocytopenia, Dehydration, and Paget Disease of the Breast. Dr. Liem is board certified in American Board Internal Medicine.

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

    Oncology Physicians Network Of California PC

    2653 Elm Ave, 
    Long Beach, CA 
     (4.5 miles away)
    Experience:
    23+ years
    Languages Spoken:
    English
    Offers Telehealth

    Eric Cheung is an Internal Medicine provider practicing medicine in Long Beach, California. He has been practicing medicine for over 23 years. Dr. Cheung is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Thrombocytopenia, Febrile Neutropenia, Agranulocytosis, and Chronic Familial Neutropenia. Dr. Cheung is board certified in American Board Of Internal Medicine.

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

    R. Nandan Md, Inc.

    3650 South St, 
    Lakewood, CA 
     (1.1 miles away)
    Experience:
    42+ years
    Languages Spoken:
    English
    Offers Telehealth

    Raghu Nandan is an Internal Medicine provider practicing medicine in Lakewood, California. He has been practicing medicine for over 42 years. Dr. Nandan is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Anemia, Paget Disease of the Breast, Breast Cancer, and Thrombocytopenia. Dr. Nandan is board certified in American Board Of Internal Medicine.

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

    Oncology Physicians Network Of California PC

    3650 South St, 
    Lakewood, CA 
     (1.1 miles away)
    Experience:
    28+ years
    Languages Spoken:
    English

    Vu Phan is an Internal Medicine provider practicing medicine in Lakewood, California. He has been practicing medicine for over 28 years. Dr. Phan is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 36 other conditions, according to our data. His clinical expertise encompasses Paget Disease of the Breast, Inflammatory Breast Cancer, Lung Cancer, Ampullary Cancer, and Bone Marrow Aspiration. Dr. Phan is board certified in American Board Internal Medicine.

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

    Oncology Physicians Network Of California PC

    3650 South St, 
    Lakewood, CA 
     (1.1 miles away)
    Experience:
    26+ years
    Languages Spoken:
    English
    Offers Telehealth

    Nihal Abdulla is an Internal Medicine provider practicing medicine in Lakewood, California. He has been practicing medicine for over 26 years. Dr. Abdulla 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 Familial Colorectal Cancer, Colorectal Cancer, Iron Deficiency Anemia, and Thrombocytopenia. Dr. Abdulla is board certified in American Board Internal Medicine.

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

    Oncology Physicians Network Of California PC

    3650 South St, 
    Lakewood, CA 
     (1.1 miles away)
    Experience:
    27+ years
    Languages Spoken:
    English

    Ersin Unal is an Internal Medicine provider practicing medicine in Lakewood, California. He has been practicing medicine for over 27 years. Dr. Unal 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 Thrombocytopenia, Anemia, Breast Cancer, and Paget Disease of the Breast. Dr. Unal is board certified in American Board Internal Medicine.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Office

    3300 E South St Ste 304, 
    Lakewood, CA 
     (2.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Gol Golshani is an Oncologist practicing medicine in Lakewood, California. Dr. Golshani is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, Agranulocytosis, and Chronic Familial Neutropenia.

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

    College Hospital Cerritos

    10802 College Pl, 
    Cerritos, CA 
     (2.9 miles away)
    Languages Spoken:
    English

    Oliver Mason is a primary care provider, practicing in Internal Medicine in Cerritos, California. Dr. Mason is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Anemia, Febrile Neutropenia, Acne, and Hyphema.

    Experienced in Vitamin B12 Deficiency
    General Practice
    Experienced in Vitamin B12 Deficiency
    General Practice

    Southern California Permanente Medical Group

    9400 Rosecrans Ave, 
    Bellflower, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Rajendra Sheth is a primary care provider, practicing in General Practice in Bellflower, California. Dr. Sheth is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 56 other conditions, according to our data. His clinical expertise encompasses Otitis, Parinaud Oculoglandular Syndrome, Obesity, and Tonsillitis.

    Experienced in Vitamin B12 Deficiency
    Internal Medicine | Rheumatology
    Experienced in Vitamin B12 Deficiency
    Internal Medicine | Rheumatology

    Dipti Doshi MD Inc

    17100 Norwalk Blvd, 
    Cerritos, CA 
     (3.9 miles away)
    Experience:
    36+ years
    Languages Spoken:
    English
    Offers Telehealth

    Dipti Doshi is an Internal Medicine specialist and a Rheumatologist practicing medicine in Cerritos, California. She has been practicing medicine for over 36 years. Dr. Doshi is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 19 other conditions, according to our data. Her clinical expertise encompasses Vitamin D Deficiency, Fibromyalgia, MASS Phenotype, and Mixed Connective Tissue Disease. Dr. Doshi is board certified in American Board Of Internal Medicine.

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

    Office

    12506 South St, 
    Cerritos, CA 
     (4.0 miles away)
    Languages Spoken:
    English

    Ki Che is a primary care provider, practicing in Internal Medicine in Cerritos, California. Dr. Che is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, Endoscopy, and Gastrostomy.

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

    Oncology Physicians Network Of California PC

    2653 Elm Ave, 
    Long Beach, CA 
     (4.5 miles away)
    Experience:
    11+ years
    Languages Spoken:
    English

    Michael Del Rosario is an Internal Medicine provider practicing medicine in Long Beach, California. He has been practicing medicine for over 11 years. Dr. Del Rosario is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Thrombocytopenia, Colorectal Cancer, Chronic Familial Neutropenia, and Agranulocytosis. Dr. Del Rosario is board certified in American Board Of Internal Medicine.

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

    Cal-Care Medical Group Inc.

    500 W Willow St, 
    Long Beach, CA 
     (4.9 miles away)
    Languages Spoken:
    English

    Daryoush Kashani is a primary care provider, practicing in Family Medicine in Long Beach, California. Dr. Kashani is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Vitamin D Deficiency, High Cholesterol, Familial Hypertriglyceridemia, and Obesity in Children.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Cardiovascular Care Inc.

    3801 Katella Ave Ste 401, 
    Los Alamitos, CA 
     (5.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Bruce Vannatta is a Cardiologist practicing medicine in Los Alamitos, California. Dr. Vannatta is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 44 other conditions, according to our data. His clinical expertise encompasses High Cholesterol, Arterial Embolism, Nasal Flaring, Apoplexy, and Pacemaker Implantation.

    Experienced in Vitamin B12 Deficiency
    Hematology
    Experienced in Vitamin B12 Deficiency
    Hematology
    3822 Katella Avenue, 
    Los Alamitos, CA 
     (5.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Collin Vu is a Hematologist practicing medicine in Los Alamitos, California. Dr. Vu is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 50 other conditions, according to our data. His clinical expertise encompasses Anemia, Pleuropulmonary Blastoma, Small Cell Lung Cancer (SCLC), and ALK-Positive Non-Small Cell Lung Cancer. Dr. Vu is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Cardiology
    Experienced in Vitamin B12 Deficiency
    Cardiology

    Office

    8585 Knott Ave Ste 102, 
    Buena Park, CA 
     (6.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jose Caceres is a Cardiologist practicing medicine in Buena Park, California. Dr. Caceres is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 34 other conditions, according to our data. His clinical expertise encompasses Stable Angina, Metabolic Syndrome, Angina, and Infectious Myocarditis.

    Advanced in Vitamin B12 Deficiency
    Family Medicine
    Advanced in Vitamin B12 Deficiency
    Family Medicine

    Aadisai Medical Group

    5451 La Palma Ave, 
    La Palma, CA 
     (5.4 miles away)
    Experience:
    50+ years
    Languages Spoken:
    English

    Virendra Desai is a primary care provider, practicing in Family Medicine in La Palma, California. He has been practicing medicine for over 50 years. Dr. Desai is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Vitamin B12 Deficiency and Subacute Combined Degeneration. Dr. Desai is board certified in American Board Of Family Medicine.

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

    Oncology Physicians Network Of California PC

    1043 Elm Ave, 
    Long Beach, CA 
     (5.8 miles away)
    Experience:
    48+ years
    Languages Spoken:
    English
    Offers Telehealth

    Nerses Tchekmedyian is an Internal Medicine provider practicing medicine in Long Beach, California. He has been practicing medicine for over 48 years. Dr. Tchekmedyian 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 Juvenile Primary Osteoporosis, Iron Deficiency Anemia, Familial Colorectal Cancer, and Stomach Cancer. Dr. Tchekmedyian is board certified in American Board Internal Medicine.

    Showing 1-20 of 139

    Last Updated: 04/28/2026

    When should I see a Vitamin B12 Deficiency doctor near Lakewood, 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 Lakewood, 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 Lakewood, 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 Lakewood, 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 Lakewood, 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 Lakewood, 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 Lakewood, 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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