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

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 25 doctor with experience in Vitamin B12 Deficiency near Thousand Oaks, CA. Of these, 22 are Experienced and 3 are Advanced.

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25 providers found
    Experienced in Vitamin B12 Deficiency
    Geriatrics | Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Geriatrics | Internal Medicine

    Primary Care & Specialty Care - Dignity Health Medical Group - Camarillo, CA

    5051 Verdugo Wy, Ste 100 & Ste 110, 
    Camarillo, CA 
     (8.3 miles away)
    Languages Spoken:
    English, Hindi, Spanish
    Accepting New Patients
    Offers Telehealth

    I treat every patient as if they are my family or friends. I listen to my patients and treat them with the utmost respect, dedication, and commitment that I show my family and loved ones, putting their best health interests first. I treat the patient, not just a symptom or an ailment. I do my best to preserve the trust my patients place in me. Dr. Patel 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 Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, Bone Graft, and Vertebroplasty. Dr. Patel is currently accepting new patients.

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

    Niti Vaid DO Facp

    32144 Agoura Rd Ste 118, 
    Westlake Village, CA 
     (2.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Niti Vaid is a primary care provider, practicing in Internal Medicine in Westlake Village, California. Dr. Vaid is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. Her clinical expertise encompasses Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and High Cholesterol.

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

    Arroyo Oaks Medical Associates, Inc

    2230 Lynn Rd Ste 200, 
    Thousand Oaks, CA 
     (3.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Daniel Tavari is a primary care provider, practicing in Family Medicine in Thousand Oaks, California. Dr. Tavari is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 61 other conditions, according to our data. His clinical expertise encompasses Bronchitis, Childhood Pancreatitis, Glucocorticoid-Remediable Aldosteronism, Gastrostomy, and Endoscopy.

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

    Arroyo Oaks Medical Associates, Inc

    2230 Lynn Rd Ste 200, 
    Thousand Oaks, CA 
     (3.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Manoj Aswani is a primary care provider, practicing in Internal Medicine in Thousand Oaks, California. Dr. Aswani is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 58 other conditions, according to our data. His clinical expertise encompasses High Cholesterol, Hypertension, Familial Hypertension, Pacemaker Implantation, and Endoscopy.

    Experienced in Vitamin B12 Deficiency
    Pulmonary Medicine
    Experienced in Vitamin B12 Deficiency
    Pulmonary Medicine

    Dr. Duc Nguyen, MD - Thousand Oaks

    227 W Janss Rd Ste 345, 
    Thousand Oaks, CA 
     (3.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Duc Nguyen is a Pulmonary Medicine provider practicing medicine in Thousand Oaks, California. Dr. Nguyen 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 Chronic Obstructive Pulmonary Disease (COPD), Lung Metastases, Diffuse Panbronchiolitis, and Parapneumonic Pleural Effusion.

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

    MDVIP - Thousand Oaks, CA

    227 W Janss Rd Ste 335, 
    Thousand Oaks, CA 
     (3.2 miles away)
    Languages Spoken:
    English

    Hema Nathan is a primary care provider, practicing in Family Medicine in Thousand Oaks, California. Dr. Nathan is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, Cholangiocarcinoma (Bile Duct Cancer), Gastrostomy, and Endoscopy.

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

    Andre Yousefia M.D. Inc.

    227 W Janss Rd Ste 100, 
    Thousand Oaks, CA 
     (3.2 miles away)
    Languages Spoken:
    English

    Andre Yousefia is a primary care provider, practicing in Internal Medicine in Thousand Oaks, California. Dr. Yousefia 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 Felty Syndrome, Pericarditis, Apoplexy, and Anemia.

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

    UCLA Heart And Vascular Services

    100 Moody Ct Ste 200, 
    Thousand Oaks, CA 
     (3.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Steven Mccarthy is an Internal Medicine provider practicing medicine in Thousand Oaks, California. Dr. Mccarthy 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 Vitamin D Deficiency, Vitamin B12 Deficiency, Smoldering Multiple Myeloma, and Vocal Cord Dysfunction.

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

    Kofi Kessey Md/Phd Inc. A California Professional Medical Corporation

    351 Rolling Oaks Dr Ste 204, 
    Thousand Oaks, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Christine Dahlin is a primary care provider, practicing in Internal Medicine in Thousand Oaks, California. Dr. Dahlin 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 Transcobalamin Deficiency, Hyperlipidemia Type 3, Osteoporosis, and Postmenopausal Osteoporosis.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency
    2045 Royal Avenue, Suite 234, 
    Simi Valley, CA 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Vladislav Bekerman is an Ophthalmologist practicing medicine in Simi Valley, California. Dr. Bekerman 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 Interstitial Keratitis, Cataract, Glaucoma, Blepharitis, and Trabeculectomy. Dr. Bekerman is currently accepting new patients.

    Advanced in Vitamin B12 Deficiency
    Advanced in Vitamin B12 Deficiency
    Camarillo, CA 
     (13.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Chirag Dalsania is a Hematologist practicing medicine in Camarillo, California. Dr. Dalsania is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 51 other conditions, according to our data. His clinical expertise encompasses Thrombocytopenia, Iron Deficiency Anemia, Adult Immune Thrombocytopenia, and Immune Thrombocytopenic Purpura (ITP). Dr. Dalsania is currently accepting new patients.

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

    Alamar Health Care Inc

    58 W Loop Dr, 
    Camarillo, CA 
     (11.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Jeffrey Allan, MD is an Internal Medicine specialist in Camarillo, CA and has over 31 years of experience in the medical field.  He graduated from University Of California, Los Angeles School of Medicine in 1989. He is affiliated with medical facilities: St. John's Regional Medical Center and St. John's Pleasant Valley Hospital. He is accepting new patients and has indicated that he accepts Telehealth appointments and reimbursed Phone Appointments. Be sure to call ahead with Dr. Allan to book an appointment..WE PROVIDE MEDICAL CARE FOR ALL STAGES OF ADULT LIFE.Care For Adults IncludesUrgent care visits generally same dayVideo Telehealth and reimbursed Phone AppointmentsAcute IIIness Care and Chronic Condition ManagementAssessment of painAnnual Wellness Visits as well as Annual physical examPartnering with Patients and CaregiversMen's  Health and Women's Health ExamsPre-travel examinations & Return to work exams.Assessment and Prevention Strategies to Delay Mid-life Premature Aging.WE ARE THE RECOGNIZED LEADING CENTER FOR GERIATRIC MEDICINE AND GERONTOLOGY IN VENTURA COUNTYOur doctors have many years of education, training and experience as doctors of Internal Medicine with advanced specialized training in Geriatric Medicine.  In fact, our founder, Jeffrey B. Allan, M.D., completed a two-year post-residency Fellowship in Geriatric Medicine from the prestigious UCLA School of Medicine University/Veterans Administration combined program, considered one of the best training programs of its kind in the world.Our doctors and hand-picked on-call physicians follow our patients from the Alamar Healthcare office to hospital, nursing home, residential care, and assisted living.  They coordinate care planning with home health agencies and hospice.Our Alamar Healthcare doctors have many years of Internal Medicine experience in Primary Care treating adults of all ages.  Each patient is listened to carefully at each encounter.  Our doctors partner with patients in their care.  Our practice emphasizes compassion, knowledge, respect and good communication. Patients are followed from office to hospital and on to skilled nursing facilities for continuity of care.  Our patients often are members of the same family, from young adult to seniors. We offer new patient appointments & follow-up visits as well as same day or next day Urgent Care appointments for established patients depending on the needs of the patient.  Our doctors are proud to serve as physicians to patients throughout Ventura County as well provide healthcare to their local fellow health professionals, to Veterans through the VA Veterans Choice Program, and to eligible Ventura County Health Care Plan Employees. Dr. Allan is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Thrombocytopenia, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Liver Embolization, and Hip Replacement. Dr. Allan is currently accepting new patients.

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

    Afrouz S. Gerayli, MD Private Practice

    Camarillo, CA 
     (13.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Afrouz Gerayli is a primary care provider, practicing in Internal Medicine in Camarillo, California. Dr. Gerayli is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 22 other conditions, according to our data. Her clinical expertise encompasses Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Degos Disease. Dr. Gerayli is board certified in Internal Medicine. Dr. Gerayli is currently accepting new patients.

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

    Theresa MLM Inc.

    2904 Theresa Dr Ste 3, 
    Newbury Park, CA 
     (5.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Aram Mkhitarian is a primary care provider, practicing in Family Medicine in Newbury Park, California. Dr. Mkhitarian is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Vitamin D Deficiency, Insomnia, COVID-19, and Multisystem Inflammatory Syndrome in Children (MIS-C).

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

    Office

    1129 Red Tail Way, 
    Simi Valley, CA 
     (6.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Royal Dean is a primary care provider, practicing in Internal Medicine in Simi Valley, California. Dr. Dean 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 Lipoprotein Lipase Deficiency, Hyperlipoproteinemia Type 5, Apolipoprotein C2 Deficiency, and Familial Hypertriglyceridemia.

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

    Anthony Thong Phan MD Inc.

    1189 Swallow Ln Ste 110, 
    Simi Valley, CA 
     (7.1 miles away)
    Languages Spoken:
    English

    Anthony Phan is a primary care provider, practicing in Internal Medicine in Simi Valley, California. Dr. Phan is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Prolidase Deficiency, Homocystinuria due to MTHFR Deficiency, Inborn Amino Acid Metabolism Disorder, and Infant Hyperglycemia.

    Experienced in Vitamin B12 Deficiency
    Geriatrics | General Practice
    Experienced in Vitamin B12 Deficiency
    Geriatrics | General Practice

    Office

    530 New Los Angeles Ave # 115-362, 
    Moorpark, CA 
     (8.7 miles away)
    Languages Spoken:
    English

    Gary Proffett is a primary care provider, a Geriatrics specialist and a General Practice provider in Moorpark, California. Dr. Proffett 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 Anemia, Maturity Onset Diabetes of the Young, Methemoglobinemia, and Decorticate Posture.

    Experienced in Vitamin B12 Deficiency
    Oncology | Hematology
    Experienced in Vitamin B12 Deficiency
    Oncology | Hematology
    7320 Woodlake Avenue, Suite 330, 
    West Hills, CA 
     (12.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Omid Shaye is a Hematologist and an Oncologist practicing medicine in West Hills, California. Dr. Shaye is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Paget Disease of the Breast, Familial Colorectal Cancer, Diffuse Large B-Cell Lymphoma (DLBCL), Large-Cell Immunoblastic Lymphoma, and Bone Marrow Aspiration. Dr. Shaye is currently accepting new patients.

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

    MDVIP - West Hills, CA

    7345 Medical Center Dr Ste 160, 
    West Hills, CA 
     (12.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Gary Nudell is a primary care provider, practicing in Internal Medicine in West Hills, California. Dr. Nudell is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and High Cholesterol. Dr. Nudell is currently accepting new patients.

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

    Raluca Arimie Medical Corporation

    7325 Medical Center Dr Ste 306, 
    West Hills, CA 
     (10.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Narsis Moshfeghi is a primary care provider, practicing in Internal Medicine in West Hills, California. Dr. Moshfeghi is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 37 other conditions, according to our data. Her clinical expertise encompasses Degos Disease, Sitosterolemia, Anemia, and Homocystinuria due to MTHFR Deficiency.

    Showing 1-20 of 25

    Last Updated: 04/28/2026

    When should I see a Vitamin B12 Deficiency doctor near Thousand Oaks, 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 Thousand Oaks, 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 Thousand Oaks, 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 Thousand Oaks, 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 Thousand Oaks, 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 Thousand Oaks, 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 Thousand Oaks, 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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