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

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 09/26/2026

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MediFind found 73 doctor with experience in Vitamin B12 Deficiency near diamond bar, CA. Of these, 65 are Experienced and 8 are Advanced.

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73 providers found
    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine

    Oncology Physicians Network Of California PC

    1910 Royalty Dr, 
    Pomona, CA 
     (6.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Behnam Ebrahimi is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Ebrahimi is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Small Cell Lung Cancer (SCLC), Breast Cancer, Thrombocytopenia, and Lung Cancer. Dr. Ebrahimi is board certified in American Board Of Internal Medicine.

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

    City Of Hope West Covina

    1250 S Sunset Ave Ste 303, 
    West Covina, CA 
     (8.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Cary Presant is an Oncologist practicing medicine in West Covina, California. Dr. Presant 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 Virilizing Ovarian Tumor, Ovarian Carcinosarcoma, Posterior Fossa Tumor, and Primitive Neuroectodermal Tumor (PNET).

    Advanced in Vitamin B12 Deficiency
    Rheumatology
    Advanced in Vitamin B12 Deficiency
    Rheumatology
    Referral may be required

    Metyas, Samy, M.D., Inc.

    500 W San Bernardino Rd, 
    Covina, CA 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Samy Metyas is a Rheumatologist practicing medicine in Covina, California. Dr. Metyas is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 54 other conditions, according to our data. His clinical expertise encompasses Fibromyalgia, Rheumatoid Arthritis (RA), Osteoporosis, and Postmenopausal Osteoporosis. Dr. Metyas is board certified in American Board Of Internal Medicine. Dr. Metyas is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Internal Medicine
    920 North Diamond Bar Boulevard, 
    Diamond Bar, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Steve Chan is a primary care provider, practicing in Internal Medicine in Diamond Bar, California. Dr. Chan 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 Chronic Kidney Disease, Irregular Sleep-Wake Syndrome, Pneumonia, Gastrostomy, and Fasciotomy. Dr. Chan is currently accepting new patients.

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

    Mallu C. Reddy M.D., Inc

    1196 N Park Ave, 
    Pomona, CA 
     (5.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Mallu Reddy is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Reddy 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 Type 2 Diabetes (T2D), Hypertension, Familial Hypertension, Endoscopy, and Gastrostomy. Dr. Reddy is board certified in American Board Of Internal Medicine. Dr. Reddy is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Geriatrics | Physician Assistant
    Experienced in Vitamin B12 Deficiency
    Geriatrics | Physician Assistant
    Referral may be required

    Vital Health Medical Group, Inc.

    2418 S Azusa Ave, 
    West Covina, CA 
     (6.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Marcel Filart is a Geriatrics specialist and a Physician Assistant practicing medicine in West Covina, California. Filart, PA is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Sepsis, Dehydration, Schizoaffective Disorder, Gastrostomy, and Prostatectomy. Filart, PA is board certified in American Board Of Internal Medicine. Filart, PA is currently accepting new patients.

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

    Cucamonga Valley Medical Group, Inc.

    5562 Philadelphia St, 
    Chino, CA 
     (7.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jesse Minguez is a primary care provider, practicing in Family Medicine in Chino, California. Dr. Minguez is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 49 other conditions, according to our data. His clinical expertise encompasses Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and Alcoholic Neuropathy. Dr. Minguez is board certified in American Board Of Family Medicine. Dr. Minguez is currently accepting new patients.

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

    Chaparral Medical Group Inc.

    790 E Bonita Ave, 
    Pomona, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Uzma Waraich is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Waraich is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Obesity, Obesity in Children, High Cholesterol, and Type 2 Diabetes (T2D). Dr. Waraich is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Chaparral Medical Group Inc.

    790 E Bonita Ave, 
    Pomona, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Nallely Flores-Lazcano is a primary care provider, practicing in Family Medicine in Pomona, California. Dr. Flores-Lazcano 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 Obesity, Hepatic Cystic Hamartoma, Caroli Disease, and Sciatica. Dr. Flores-Lazcano is currently accepting new patients.

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

    Chaparral Medical Group Inc.

    790 E Bonita Ave, 
    Pomona, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Chris Harper is a Dermatologist practicing medicine in Pomona, California. Dr. Harper is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 48 other conditions, according to our data. His clinical expertise encompasses Hereditary Mucoepithelial Dysplasia, Acrogeria, Gottron Type, Bazex Syndrome, and Congenital Hypotrichosis Milia. Dr. Harper is currently accepting new patients.

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

    Metyas, Samy, M.D., Inc.

    500 W San Bernardino Rd, 
    Covina, CA 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Christina Chen is a Rheumatologist practicing medicine in Covina, California. Dr. Chen is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 28 other conditions, according to our data. Her clinical expertise encompasses Fibromyalgia, Sjogren Syndrome, Psoriasis, and Postmenopausal Osteoporosis. Dr. Chen is board certified in American Board Of Internal Medicine. Dr. Chen is currently accepting new patients.

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

    Pilgrim Place Health Services Center

    721 Harrison Ave, 
    Claremont, CA 
     (8.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Ashok Sharma is a primary care provider, practicing in Internal Medicine in Claremont, California. Dr. Sharma 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 Obesity, Cronkhite-Canada Disease, Juvenile Polyposis Syndrome, and Attenuated Familial Adenomatous Polyposis. Dr. Sharma is currently accepting new patients.

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

    Wellness And Care Medical Inc

    1661 Hanover Rd Ste 201, 
    City Of Industry, CA 
     (5.4 miles away)
    Languages Spoken:
    English

    Yi Wang is a primary care provider, practicing in Family Medicine in City Of Industry, California. Dr. Wang is rated as an Advanced 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 Hospital-Acquired Pneumonia, Atypical Pneumonia, Renovascular Hypertension, Gastrostomy, and Colonoscopy.

    Advanced in Vitamin B12 Deficiency
    Endocrinology
    Advanced in Vitamin B12 Deficiency
    Endocrinology
    Referral required

    Chaparral Medical Group, Inc.

    1866 N Orange Grove Ave, 
    Pomona, CA 
     (6.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ewa Konca is an Endocrinologist practicing medicine in Pomona, California. Dr. Konca is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 59 other conditions, according to our data. Her clinical expertise encompasses Type 2 Diabetes (T2D), Obesity in Children, Obesity, and Hypothyroidism. Dr. Konca is board certified in Internal Medicine (Sub: Endocrinology, Diabetes & Met and American Board Of Internal Medicine. Dr. Konca is currently accepting new patients.

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

    Tuan Dai Le, M.D.

    1151 E Holt Ave, 
    Pomona, CA 
     (6.4 miles away)
    Languages Spoken:
    English

    Tuan Le is a primary care provider, practicing in Family Medicine in Pomona, California. Dr. Le is rated as an Advanced 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 B12 Deficiency, Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), and Hypertension. Dr. Le is board certified in American Board Of Family Medicine.

    Advanced in Vitamin B12 Deficiency
    Gastroenterology
    Advanced in Vitamin B12 Deficiency
    Gastroenterology
    Referral may be required

    Boston Medical And Surgical Dermatology

    247 W San Bernardino Rd, 
    Covina, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Shahnawaz Jaffer is a Gastroenterologist practicing medicine in Covina, California. Dr. Jaffer is rated as an Advanced 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 VIPoma, Diverticular Disease, Esophagitis, Colonoscopy, and Gastrectomy.

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

    Citrus Treatment Center

    1135 S Sunset Ave Ste 207, 
    West Covina, CA 
     (8.5 miles away)
    Languages Spoken:
    English

    Brian Leberthon is a Hematologist practicing medicine in West Covina, California. Dr. Leberthon is rated as an Advanced 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 Polycythemia Vera, Anemia, End-Stage Renal Disease (ESRD), and Gastroesophageal Junction Cancer.

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

    Office

    2425 S Azusa Ave, 
    West Covina, CA 
     (6.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Armen Nercessian is a primary care provider, practicing in Family Medicine in West Covina, California. Dr. Nercessian 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 Hypertension, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Type 2 Diabetes (T2D). Dr. Nercessian is currently accepting new patients.

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

    Oncology Physicians Network Of California PC

    1900 Royalty Dr, 
    Pomona, CA 
     (6.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Alaa Latif is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Latif 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 Thrombocytopenia, Glanzmann Thrombasthenia, Platelet Storage Pool Deficiency, and Bernard-Soulier Syndrome. Dr. Latif is board certified in American Board Of Internal Medicine.

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

    Inland Valley Hematology Oncology Associates

    1910 Royalty Dr, 
    Pomona, CA 
     (6.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Preeti Chaudhary is a Hematologist practicing medicine in Pomona, California. Dr. Chaudhary is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Thrombocytopenia, Febrile Neutropenia, Anemia, Pediatric Low-Grade Glioma (pLGG), and Stent Placement.

    Showing 1-20 of 73

    Last Updated: 09/26/2026

    When should I see a Vitamin B12 Deficiency doctor near diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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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