The 20 Best Vitamin B12 Deficiency Doctors Near Me in Massapequa, NY

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 316 doctor with experience in Vitamin B12 Deficiency near Massapequa, NY. Of these, 273 are Experienced, 41 are Advanced and 2 are Distinguished.

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316 providers found
    Experienced in Vitamin B12 Deficiency
    Gastroenterology
    Experienced in Vitamin B12 Deficiency
    Gastroenterology

    Northwell Health Physician Partners Medicine Specialties At Bellmore

    1872 Bellmore Avenue, 
    Bellmore, NY 
     (3.1 miles away)
    Languages Spoken:
    English, Spanish
    Offers Telehealth

    Richard Rubin is a Gastroenterologist practicing medicine in Bellmore, New York. Dr. Rubin 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 Hemorrhagic Proctocolitis, Hiatal Hernia, Congenital Diaphragmatic Hernia, Colonoscopy, and Endoscopy. Dr. Rubin is board certified in American Board Of Internal Medicine and American Board Of Internal Medicine/Gastroenterology.

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

    Northwell Health Physician Partners At Bethpage

    4072 Hempstead Turnpike, 
    Bethpage, NY 
     (4.3 miles away)
    Languages Spoken:
    English

    Robert Alexander is a primary care provider, practicing in Internal Medicine in Bethpage, New York. Dr. Alexander 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 High Cholesterol, Sitosterolemia, Vitamin D Deficiency, and Maturity Onset Diabetes of the Young.

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

    Office

    100 Veterans Blvd Ste 1, 
    Massapequa,, NY 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Michael Sacher is an Internal Medicine provider practicing medicine in Massapequa,, New York. Dr. Sacher is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Heart Murmurs, Paroxysmal Supraventricular Tachycardia (PSVT), Atrial Tachycardia, and Atrioventricular Nodal Reentrant Tachycardia (AVNRT).

    Learn about our expert tiers
    Experienced in Vitamin B12 Deficiency
    Hospital Medicine
    Experienced in Vitamin B12 Deficiency
    Hospital Medicine
    3921 Merrick Road, Suite 1, 
    Seaford, NY 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jeffrey Elfenbein is a primary care provider, practicing in Hospital Medicine in Seaford, New York. Dr. Elfenbein 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 Xanthoma, Familial Combined Hyperlipidemia, Cirrhosis, and High Cholesterol.

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

    Northwell Health Physician Partners Internal Medicine At Wantagh

    2857 Jerusalem Avenue, 
    Wantagh, NY 
     (2.9 miles away)
    Languages Spoken:
    English

    Eric Last is a primary care provider, practicing in Internal Medicine in Wantagh, New York. Dr. Last is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 32 other conditions, according to our data. His clinical expertise encompasses High Cholesterol, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Hypertension. Dr. Last is board certified in American Board Of Internal Medicine.

    Experienced in Vitamin B12 Deficiency
    Hospital Medicine
    Experienced in Vitamin B12 Deficiency
    Hospital Medicine
    30 Newbridge Road, Suite 200, 
    East Meadow, NY 
     (4.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Albert Ferrara is a primary care provider, practicing in Hospital Medicine in East Meadow, New York. Dr. Ferrara 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 Glucocorticoid-Remediable Aldosteronism, Hypertension, Familial Hypertension, and Maturity Onset Diabetes of the Young.

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

    Primary Urgent Medical PC

    791 Wellwood Ave, 
    Lindenhurst,, NY 
     (4.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Akbar Khan is a Family Medicine provider practicing medicine in Lindenhurst,, New York. Dr. Khan is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Vitamin B12 Deficiency and Schizoaffective Disorder.

    Advanced in Vitamin B12 Deficiency
    Hematology | Oncology
    Advanced in Vitamin B12 Deficiency
    Hematology | Oncology

    Northwell Health Physician Partners Medical Oncology At Woodbury

    40 Crossways Park Drive, Suite 103, 
    Woodbury, NY 
     (9.0 miles away)
    Languages Spoken:
    English, Cantonese

    Hon Chan is a Hematologist and an Oncologist practicing medicine in Woodbury, New York. Dr. Chan is rated as an Advanced 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 Drug-Induced Thrombocytopenia, Glossitis, Pernicious Anemia, and Vitamin B12 Deficiency.

    Advanced in Vitamin B12 Deficiency
    Hematology | Oncology
    Advanced in Vitamin B12 Deficiency
    Hematology | Oncology

    Northwell Health Physician Partners Medical Oncology At Woodbury

    40 Crossways Park Drive, Suite 103, 
    Woodbury, NY 
     (9.0 miles away)
    Languages Spoken:
    English

    Nancy Sun is a Hematologist and an Oncologist practicing medicine in Woodbury, New York. Dr. Sun 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 Hemangioma Thrombocytopenia Syndrome, Paris-Trousseau Thrombocytopenia, RUNX1 Familial Platelet Disorder, and Immune Thrombocytopenic Purpura (ITP). Dr. Sun is board certified in American Board Of Internal Medicine/Hematology and American Board Of Internal Medicine/Medical Oncology.

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

    Office

    Massapequa, NY 
     (1.2 miles away)
    Languages Spoken:
    English

    Richard Bebirian is a primary care provider, practicing in Family Medicine in Massapequa, New York. Dr. Bebirian 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, Subacute Combined Degeneration, Cirrhosis, and Familial Combined Hyperlipidemia.

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

    Island Family Medical Practice PC

    848 Hicksville Rd, 
    Massapequa, NY 
     (1.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Troy Fabregas is a primary care provider, practicing in Family Medicine in Massapequa, New York. Dr. Fabregas 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, Rabson-Mendenhall Syndrome, Tension Headache, and Familial Hypertension.

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

    Northwell Health Physician Partners Cardiology And Internal Medicine At Seaford

    850 Hicksville Road, Suite 104, 
    Seaford, NY 
     (1.9 miles away)
    Languages Spoken:
    English

    Michael Carvo is a primary care provider, practicing in Family Medicine in Seaford, New York. Dr. Carvo 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 Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and High Cholesterol.

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

    Northwell Health Physician Partners Internal Medicine At Seaford

    850 Hicksville Road, Suite 110, 
    Seaford, NY 
     (1.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Geri Digiovanna is a primary care provider, practicing in Family Medicine and Internal Medicine in Seaford, New York. Dr. Digiovanna is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 20 other conditions, according to our data. Her clinical expertise encompasses High Cholesterol, Hypothyroidism, COVID-19, and Multisystem Inflammatory Syndrome in Children (MIS-C).

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

    Office

    373 Broadway, 
    Amityville, NY 
     (3.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Andrew Serpe is a primary care provider, practicing in Internal Medicine in Amityville, New York. Dr. Serpe is rated as an Advanced 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 Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, Vitamin B12 Deficiency, and Subacute Combined Degeneration.

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

    Office

    317 Broadway Ste B, 
    Amityville, NY 
     (3.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mohammad Hussain is a primary care provider, practicing in Internal Medicine in Amityville, New York. Dr. Hussain is rated as an Advanced 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 Sitosterolemia, High Cholesterol, Vitamin B12 Deficiency, Gastrostomy, and Colonoscopy.

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

    Office

    389 Merrick Ave, 
    Merrick, NY 
     (4.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mark Haltrecht is a Family Medicine provider practicing medicine in Merrick, New York. Dr. Haltrecht 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 Pica, Vitamin B12 Deficiency, Vitamin D Deficiency, and Multisystem Inflammatory Syndrome in Children (MIS-C).

    Advanced in Vitamin B12 Deficiency
    Hospital Medicine
    Advanced in Vitamin B12 Deficiency
    Hospital Medicine
    1163 Old Country Road, 
    Plainview, NY 
     (6.6 miles away)
    Languages Spoken:
    English

    Dorit Ben is a primary care provider, practicing in Hospital Medicine in Plainview, New York. Dr. Ben is rated as an Advanced 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 Sepsis, Pneumonia, Atrioventricular Septal Defect, Gastrostomy, and Ureteroscopy.

    Advanced in Vitamin B12 Deficiency
    Endocrinology
    Advanced in Vitamin B12 Deficiency
    Endocrinology

    Endocrinology Diabetes & Metabolism NY PC

    1097 Old Country Rd Ste 102, 
    Plainview, NY 
     (7.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sonia Talwar is an Endocrinologist practicing medicine in Plainview, New York. Dr. Talwar is rated as an Advanced 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 Obesity in Children, Hypothyroidism, Type 2 Diabetes (T2D), and Vitamin D Deficiency.

    Experienced in Vitamin B12 Deficiency
    Gastroenterology
    Experienced in Vitamin B12 Deficiency
    Gastroenterology

    Northwell Health Gastroenterology Associates At Uniondale

    106 Charles Lindbergh Boulevard, Suite B, 
    Uniondale, NY 
     (7.5 miles away)
    Languages Spoken:
    English

    Leonard Stein is a Gastroenterologist practicing medicine in Uniondale, New York. Dr. Stein 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 Hepatitis, Autoimmune Hepatitis, Hepatitis C, and Visceromegaly. Dr. Stein is board certified in American Board Of Internal Medicine and American Board Of Internal Medicine/Gastroenterology.

    Experienced in Vitamin B12 Deficiency
    Geriatrics | Internal Medicine
    Experienced in Vitamin B12 Deficiency
    Geriatrics | Internal Medicine
    500 Front Street, 
    Hempstead, NY 
     (7.8 miles away)
    Languages Spoken:
    English, Gujarati , Hindi

    Rupal Shah is a primary care provider, practicing in Internal Medicine and Geriatrics in Hempstead, New York. Dr. Shah 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 Anemia, High Cholesterol, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Thrombectomy.

    Showing 1-20 of 316

    Last Updated: 04/28/2026

    When should I see a Vitamin B12 Deficiency doctor near Massapequa, NY?

    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 Massapequa, NY?

    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 Massapequa, NY?

    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 Massapequa, NY?

    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 Massapequa, NY?

    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 Massapequa, NY?

    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 Massapequa, NY?

    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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