The 20 Best Vitamin B12 Deficiency Doctors Near Me in Boulder, CO

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 19 doctor with experience in Vitamin B12 Deficiency near Boulder, CO. Of these, 19 are Experienced.

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19 providers found
    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gregory Britt is a Hematologist practicing medicine in Boulder, Colorado. Dr. Britt is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 42 other conditions, according to our data. His clinical expertise encompasses Hodgkin Lymphoma, Acute Mountain Sickness, Adult Soft Tissue Sarcoma, and Childhood Iron Deficiency Anemia. Dr. Britt is board certified in American Board Of Internal Medicine. Dr. Britt is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Mark Sitarik is an Oncologist practicing medicine in Boulder, Colorado. Dr. Sitarik is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 62 other conditions, according to our data. His clinical expertise encompasses Von Willebrand Disease (VWD), Heyde Syndrome, Paget Disease of the Breast, and Breast Cancer. Dr. Sitarik is board certified in American Board Of Internal Medicine. Dr. Sitarik is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Rocky Mountain Cancer Centers LLP

    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Lori Jensen is an Oncologist practicing medicine in Boulder, Colorado. Dr. Jensen is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 21 other conditions, according to our data. Her clinical expertise encompasses Paget Disease of the Breast, Breast Cancer, Small Lymphocytic Lymphoma (SLL), and Inflammatory Breast Cancer. Dr. Jensen is board certified in Internal Medicine-American Board Of Internal Medicine (ABIM). Dr. Jensen is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Vitamin B12 Deficiency
    Hematology
    Experienced in Vitamin B12 Deficiency
    Hematology

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Leslie Busby is a Hematologist practicing medicine in Boulder, Colorado. Dr. Busby 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 Familial Colorectal Cancer, Adult Soft Tissue Sarcoma, Bone Tumor, Thrombectomy, and Bone Marrow Aspiration. Dr. Busby is board certified in American Board Of Internal Medicine. Dr. Busby is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Rocky Mountain Cancer Centers LLP

    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    David Andorsky is an Oncologist practicing medicine in Boulder, Colorado. Dr. Andorsky is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 65 other conditions, according to our data. His clinical expertise encompasses Follicular Lymphoma, Chronic B-Cell Leukemia (CBCL), Chronic Lymphocytic Leukemia (CLL), and Richter Syndrome. Dr. Andorsky is board certified in Internal Medicine-American Board Of Internal Medicine (ABIM), Medical Oncology-American Board Of Internal Medicine (ABIM), and Hematology-American Board Of Internal Medicine (ABIM). Dr. Andorsky is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Austin Poole is an Oncologist practicing medicine in Boulder, Colorado. Dr. Poole is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 40 other conditions, according to our data. His clinical expertise encompasses Prostate Cancer, Colorectal Cancer, Familial Colorectal Cancer, and Familial Prostate Cancer. Dr. Poole is board certified in American Board Of Internal Medicine. Dr. Poole is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Radiation Oncology
    Experienced in Vitamin B12 Deficiency
    Radiation Oncology

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Patrick Richard is a Radiation Oncologist practicing medicine in Boulder, Colorado. He has been practicing medicine for over 10 years. Dr. Richard 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 Lung Cancer, Familial Prostate Cancer, HER-2 Positive Breast Cancer, and Prostate Cancer. Dr. Richard is board certified in American Board Of Radiology. Dr. Richard is currently accepting new patients.

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

    Family Medical Associates Of Lafayette

    1000 W South Boulder Rd Ste 110, 
    Lafayette, CO 
     (9.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Mira Lee is a primary care provider, practicing in Family Medicine in Lafayette, Colorado. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. Her clinical expertise encompasses Infant Hyperglycemia, High Cholesterol, Hypothyroidism, and Subacute Combined Degeneration. Dr. Lee is board certified in American Board Of Family Medicine. Dr. Lee is currently accepting new patients.

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

    Boulder Medical Center

    2750 Broadway St, Family Medicine, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Harold Johnson is a primary care provider, practicing in Family Medicine in Boulder, Colorado. Dr. Johnson 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 High Cholesterol, Familial Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Johnson is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Allergy and Immunology
    Experienced in Vitamin B12 Deficiency
    Allergy and Immunology

    Boulder Medical Center

    2750 Broadway St, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English

    Karen Andrews is an Allergy and Immunologist practicing medicine in Boulder, Colorado. Dr. Andrews is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 16 other conditions, according to our data. Her clinical expertise encompasses Primary Immunodeficiency (PID), Sinusitis, Allergic Rhinitis, and Grass Allergy.

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

    Boulder Medical Center

    2750 Broadway St, Family Medicine, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Krista Toomre is a primary care provider, practicing in Family Medicine in Boulder, Colorado. Dr. Toomre is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Menopause, Vertigo, Hypertension, and Familial Hypertension.

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

    Boulder Medical Center

    2750 Broadway St, Internal Medicine Dept, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Hilary Wallace is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Wallace is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Hypothyroidism, Melorheostosis with Osteopoikilosis, Melorheostosis, and Osteopenia. Dr. Wallace is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Hematology | Oncology
    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Hematology | Oncology
    4715 Arapahoe Ave, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English

    Patrick Moran is a Hematologist Oncology specialist and a Hematologist practicing medicine in Boulder, Colorado. Dr. Moran 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 Multiple Myeloma, Paget Disease of the Breast, Pleuropulmonary Blastoma, and Lung Cancer.

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

    Office

    2880 Folsom St Ste 100, 
    Boulder, CO 
     (2.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    William Blanchet is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Blanchet 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 Testicular Failure, Male Pseudohermaphroditism with Gynecomastia, Eunuchoidism Familial Hypogonadotropic, and Hypogonadism Primary Partial Alopecia.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Associated Neurologists

    4801 Riverbend Rd, 
    Boulder, CO 
     (2.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Christy Young is a Neurologist practicing medicine in Boulder, Colorado. Dr. Young 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 Migraine, Relapsing Multiple Sclerosis (RMS), Multiple Sclerosis (MS), and Movement Disorders.

    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Hematology | Oncology
    Experienced in Vitamin B12 Deficiency
    Hematology Oncology | Hematology | Oncology

    Good Samaritan Hospital - Cancer Centers Of Colorado

    340 Exempla Circle, 
    Lafayette, CO 
     (9.3 miles away)
    Experience:
    14+ years
    Languages Spoken:
    English
    Offers Telehealth

    Anthony Accurso is a Hematologist Oncology specialist and a Hematologist practicing medicine in Lafayette, Colorado. He has been practicing medicine for over 14 years. Dr. Accurso is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 40 other conditions, according to our data. His clinical expertise encompasses Chronic Lymphocytic Leukemia (CLL), Richter Syndrome, Large-Cell Immunoblastic Lymphoma, Acute Lymphoblastic Leukemia (ALL), and Bone Marrow Aspiration. Dr. Accurso is board certified in American Board Of Internal Medicine and American Board Of Internal Medicine.

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

    Boulder Medical Center

    80 Health Park Dr, Ste 100, 
    Louisville, CO 
     (8.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Randolph Pinto is a primary care provider, practicing in Family Medicine in Louisville, Colorado. Dr. Pinto 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 Sitosterolemia, Type 2 Diabetes (T2D), High Cholesterol, and Atherosclerosis. Dr. Pinto is board certified in Family Medicine-American Board Of Family Medicine (ABFM). Dr. Pinto is currently accepting new patients.

    Experienced in Vitamin B12 Deficiency
    Nephrology
    Experienced in Vitamin B12 Deficiency
    Nephrology

    Western Nephrology Metabolic Bone Disease PC

    1960 Ken Pratt Blvd Ste B, 
    Longmont, CO 
     (13.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    George Kim is a Nephrologist practicing medicine in Longmont, Colorado. Dr. Kim is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Acute Kidney Failure, and Renovascular Hypertension. Dr. Kim is board certified in American Board Of Internal Medicine. Dr. Kim is currently accepting new patients.

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

    North Vista Medical Center

    205 S Main St, Ste A, 
    Longmont, CO 
     (13.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Timothy Nagel is a Family Medicine provider practicing medicine in Longmont, Colorado. Dr. Nagel is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Vitamin B12 Deficiency and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP). Dr. Nagel is board certified in Family Medicine-American Board Of Family Medicine (ABFM). Dr. Nagel is currently accepting new patients.

    Showing 1-19 of 19

    Last Updated: 04/28/2026

    When should I see a Vitamin B12 Deficiency doctor near Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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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