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

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 09/26/2026

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MediFind found 104 doctor with experience in Vitamin B12 Deficiency near orange, CA. Of these, 92 are Experienced and 12 are Advanced.

Location
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104 providers found
    Experienced in Vitamin B12 Deficiency
    Hematology | Oncology
    Experienced in Vitamin B12 Deficiency
    Hematology | Oncology
    Referral may be required

    UCI Health - Irvine Chao Family Comprehensive Cancer Center & Ambulatory Care

    19208 Jamboree Road, 
    Irvine, CA 
     (9.1 miles away)
    Languages Spoken:
    English, Farsi
    Offers Telehealth

    Misagh Karimi is a Hematologist and an Oncologist practicing medicine in Irvine, California. Dr. Karimi 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 Breast Cancer, Familial Colorectal Cancer, Colorectal Cancer, and Paget Disease of the Breast. Dr. Karimi is board certified in American Board Of Internal Medicine - Hematology and American Board Of Internal Medicine - Medical Oncology.

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

    Pacific Shores Medical Group

    16300 Sand Canyon Ave, Ste 207, 
    Irvine, CA 
     (10.0 miles away)
    Languages Spoken:
    English, Armenian, French, Spanish
    Accepting New Patients
    Offers Telehealth

    Nerses Tchekmedyian is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Tchekmedyian is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Juvenile Primary Osteoporosis, Postmenopausal Osteoporosis, Osteoporosis, and Ulcerative Colitis. Dr. Tchekmedyian is board certified in Internal Medicine (Sub: Medical Oncology), American Board Internal Medicine, and Internal Medicine. Dr. Tchekmedyian is currently accepting new patients.

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

    Optum - Chapman

    845 E Chapman Ave, 
    Orange, CA 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Ana Fajardo is a primary care provider, practicing in Family Medicine in Orange, California. Dr. Fajardo is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 27 other conditions, according to our data. Her clinical expertise encompasses Autoerythrocyte Sensitivity, Gardner-Diamond Syndrome, Purpura, and Cirrhosis. Dr. Fajardo is board certified in American Board Of Family Medicine. Dr. Fajardo is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    Referral may be required

    Sudarsan Vishnu Kollimuttathuillam, M.D.

    16300 Sand Canyon Ave, 
    Irvine, CA 
     (10.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sudarsan Kollimuttathuillam is an Oncologist practicing medicine in Irvine, California. Dr. Kollimuttathuillam is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Agranulocytosis, Chronic Familial Neutropenia, Gastroesophageal Junction Cancer, and Febrile Neutropenia.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    Referral may be required

    Uc Regents

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

    Andreea Nanci is an Oncologist practicing medicine in Orange, California. Dr. Nanci is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 17 other conditions, according to our data. Her clinical expertise encompasses Inflammatory Breast Cancer, Paget Disease of the Breast, Angiosarcoma, and Chronic Lymphocytic Leukemia (CLL). Dr. Nanci is board certified in American Board Of Internal Medicine - Medical Oncology and American Board Of Internal Medicine - Internal Medicine.

    Experienced in Vitamin B12 Deficiency
    Family Medicine | Geriatrics
    Experienced in Vitamin B12 Deficiency
    Family Medicine | Geriatrics

    UCI Health SeniorHealth Center

    101 The City Drive South, Building 25B, 
    Orange, CA 
     (2.0 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English, Spanish
    Accepting New Patients
    Offers Telehealth

    Renee Pace is a primary care provider, practicing in Family Medicine and Geriatrics in Orange, California. She has been practicing medicine for over 10 years. Dr. Pace is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Nephrosclerosis, Renovascular Hypertension, Diabetic Nephropathy, and Infant Hyperglycemia. Dr. Pace is board certified in American Board Of Family Medicine - Family Medicine and American Board Of Family Medicine - Geriatric Medicine. Dr. Pace is currently accepting new patients.

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

    Office

    10741 Westminster Ave Ste 100, 
    Garden Grove, CA 
     (4.7 miles away)
    Languages Spoken:
    English

    Mary Tran is a primary care provider, practicing in Family Medicine in Garden Grove, California. Dr. Tran is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 33 other conditions, according to our data. Her clinical expertise encompasses Tension Headache, Cyclic Neutropenia, Swallowing Difficulty, Gastrostomy, and Hemorrhoidectomy.

    Advanced in Vitamin B12 Deficiency
    Hematology | Oncology
    Advanced in Vitamin B12 Deficiency
    Hematology | Oncology
    Referral may be required

    Oncura Health

    300 S Harbor Blvd, Ste 600, 
    Anaheim, CA 
     (4.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jayaram Bharadwaj is a Hematologist and an Oncologist practicing medicine in Anaheim, California. Dr. Bharadwaj is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Thrombocytopenia, Agranulocytosis, Breast Cancer, and Vitamin B12 Deficiency.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Fernando Montelongo, MD

    932 E Chapman Ave, 
    Orange, CA 
     (0.7 miles away)
    Languages Spoken:
    English

    Fernando Montelongo is a primary care provider, practicing in Family Medicine in Orange, California. Dr. Montelongo is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Familial Hypertriglyceridemia, Type 1 Diabetes (T1D), Nonbacterial Prostatitis, and Bacterial Prostatitis.

    Experienced in Vitamin B12 Deficiency
    Hematology Oncology
    Experienced in Vitamin B12 Deficiency
    Hematology Oncology
    Referral may be required
    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 Vitamin B12 Deficiency. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Large-Cell Immunoblastic Lymphoma, Adult Soft Tissue Sarcoma, WT1-Related Wilms Tumor Syndromes, and Clear Cell Sarcoma. Dr. Wong is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Hematology Oncology
    Experienced in Vitamin B12 Deficiency
    Hematology Oncology
    Referral may be required
    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 Vitamin B12 Deficiency. She is also highly rated in 17 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Pleuropulmonary Blastoma, and Familial Prostate Cancer. Dr. Otis is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    Referral may be required

    Office

    200 S Manchester Ave Ste 300, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Khosrow Mahdavi is an Oncologist practicing medicine in Orange, California. Dr. Mahdavi 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 Myelodysplastic Syndrome (MDS), Inflammatory Breast Cancer, Paget Disease of the Breast, Familial Colorectal Cancer, and Bone Marrow Aspiration.

    Experienced in Vitamin B12 Deficiency
    Endocrinology
    Experienced in Vitamin B12 Deficiency
    Endocrinology
    Referral required

    Endocrine Consultants And Specialists Medical Group Inc

    1140 W La Veta Ave Ste 420, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Samuel Mayeda is an Endocrinologist practicing medicine in Orange, California. Dr. Mayeda is rated as an Experienced 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 Rickets, Osteomalacia, Vitamin D Deficiency, and Type 2 Diabetes (T2D). Dr. Mayeda is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    Referral may be required

    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 Vitamin B12 Deficiency. He is also highly rated in 35 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 Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    Referral may be required

    Providence Saint Joseph Heritage Medical Group Hematology And Oncology

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

    Tariq Mahmood is an Oncologist practicing medicine in Orange, California. Dr. Mahmood 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 Paget Disease of the Breast, Angiosarcoma, Pleuropulmonary Blastoma, and Lung Cancer. Dr. Mahmood is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Hematology | Oncology
    Experienced in Vitamin B12 Deficiency
    Hematology | Oncology
    Referral may be required

    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 Vitamin B12 Deficiency. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Paget Disease of the Breast, Breast Cancer, Angiosarcoma, and Inflammatory Breast Cancer.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    Referral may be required

    UC Irvine Medical Center

    101 The City Drive South, Building 30, 
    Orange, CA 
     (2.0 miles away)
    Languages Spoken:
    English, Arabic, Spanish
    Offers Telehealth

    Ramy Hanna is a Nephrologist practicing medicine in Orange, California. Dr. Hanna is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Atypical Hemolytic Uremic Syndrome (aHUS), Hemolytic-Uremic Syndrome, D-Plus Hemolytic Uremic Syndrome, Kidney Transplant, and Parathyroidectomy. Dr. Hanna is board certified in American Board Of Internal Medicine - Nephrology.

    Experienced in Vitamin B12 Deficiency
    Family Medicine
    Experienced in Vitamin B12 Deficiency
    Family Medicine
    801 North Tustin Avenue, Suite 703, 
    Santa Ana, CA 
     (2.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Thomas Badin is a primary care provider, practicing in Family Medicine in Santa Ana, California. Dr. Badin is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Diffuse Panbronchiolitis, Insomnia, Glossitis, and Pernicious Anemia.

    Experienced in Vitamin B12 Deficiency
    Geriatrics | Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Geriatrics | Internal Medicine
    Referral may be required

    Access Community Health Center

    520 N Main St, 
    Santa Ana, CA 
     (2.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Alvin Chang is a primary care provider, practicing in Geriatrics and Internal Medicine in Santa Ana, California. Dr. Chang is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Schizoaffective Disorder, Osteomyelitis in Children, Vitamin D Deficiency, and Gastrostomy. Dr. Chang is board certified in American Board Of Internal Medicine. Dr. Chang is currently accepting new patients.

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

    Saint Youstina

    809 S Main St, 
    Santa Ana, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    Isaac Beshay is a primary care provider, practicing in Family Medicine in Santa Ana, California. Dr. Beshay is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Showing 1-20 of 104

    Last Updated: 09/26/2026

    When should I see a Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 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 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 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 orange, 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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