The 20 Best Vitamin B12 Deficiency Doctors Near Me in Mentor, OH

Find the Top Vitamin B12 Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 52 doctor with experience in Vitamin B12 Deficiency near Mentor, OH. Of these, 51 are Experienced and 1 are Advanced.

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

    Mentor Medical Office Building

    7060 Wayside Drive, 
    Mentor, OH 
     (0.9 miles away)
    Experience:
    23+ years
    Languages Spoken:
    English
    Offers Telehealth

    Michael Koniarczyk is a primary care provider, practicing in Internal Medicine in Mentor, Ohio. He has been practicing medicine for over 23 years. Dr. Koniarczyk 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 Diabetic Retinopathy, Hypertension, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Koniarczyk is board certified in American Board Of Internal Medicine, 2011.

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

    Willoughby Hills Family Health Center, North Building

    2550 Som Center Road, 
    Willoughby Hills, OH 
     (4.3 miles away)
    Experience:
    52+ years
    Languages Spoken:
    English

    Aric Greenfield is a Hematologist Oncology provider practicing medicine in Willoughby Hills, Ohio. He has been practicing medicine for over 52 years. Dr. Greenfield is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 55 other conditions, according to our data. His clinical expertise encompasses Nodular Lymphocyte-Predominant Hodgkin Lymphoma (NLPHL), Paget Disease of the Breast, Breast Cancer, and Hodgkin Lymphoma. Dr. Greenfield is board certified in American Board Of Internal Medicine, 1984.

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

    Lake Hospital System Inc.

    9485 Mentor Ave Ste 210, 
    Mentor,, OH 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Thomas Eiswerth is a Family Medicine provider practicing medicine in Mentor,, Ohio. Dr. Eiswerth is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His clinical expertise encompasses Vitamin D Deficiency, Heart Failure with Preserved Ejection Fraction (HFpEF), Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), and Vitamin B12 Deficiency.

    Learn about our expert tiers
    Advanced in Vitamin B12 Deficiency
    Advanced in Vitamin B12 Deficiency

    Lake Health/University Hospitals Seidman Cancer Center

    9485 Mentor Ave Ste 3, 
    Mentor, OH 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Willem Vanheeckeren is a Hematologist practicing medicine in Mentor, Ohio. Dr. Vanheeckeren is rated as an Advanced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 77 other conditions, according to our data. His clinical expertise encompasses Non-Hodgkin Lymphoma, Classical Hodgkin Lymphoma, Hodgkin Lymphoma, Thrombocytopenia, and Bone Marrow Aspiration.

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

    Willoughby Hills Family Health Center, South Building

    2570 Som Center Road, 
    Willoughby Hills, OH 
     (7.1 miles away)
    Experience:
    36+ years
    Languages Spoken:
    English
    Offers Telehealth

    Lawrence Hughes is a primary care provider, practicing in Internal Medicine in Willoughby Hills, Ohio. He has been practicing medicine for over 36 years. Dr. Hughes is rated as an Experienced 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 Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Renovascular Hypertension. Dr. Hughes is board certified in American Board Of Internal Medicine, 1997.

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

    Willoughby Hills Family Health Center, South Building

    2570 Som Center Road, 
    Willoughby Hills, OH 
     (7.1 miles away)
    Experience:
    42+ years
    Languages Spoken:
    English
    Offers Telehealth

    Victoria Cornette is a primary care provider, practicing in Internal Medicine in Willoughby Hills, Ohio. She has been practicing medicine for over 42 years. Dr. Cornette 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 Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and Glucocorticoid-Remediable Aldosteronism. Dr. Cornette is board certified in American Board Of Internal Medicine, 1997.

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

    Willoughby Hills Family Health Center, South Building

    2570 Som Center Road, 
    Willoughby Hills, OH 
     (7.1 miles away)
    Experience:
    29+ years
    Languages Spoken:
    English
    Offers Telehealth

    Andrew Kostraba is a primary care provider, practicing in Internal Medicine in Willoughby Hills, Ohio. He has been practicing medicine for over 29 years. Dr. Kostraba 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 Diabetic Neuropathy, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis. Dr. Kostraba is board certified in American Board Of Internal Medicine, 2005.

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

    Lake Hospital System Inc.

    9485 Mentor Ave Ste 210, 
    Mentor, OH 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Michael Baranauskas is a primary care provider, practicing in Family Medicine in Mentor, Ohio. Dr. Baranauskas 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 Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, and Sitosterolemia.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Lake Health/University Hospitals Seidman Cancer Center Physicians

    9485 Mentor Ave Ste 107-117, 
    Mentor, OH 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Regan Demshar is an Oncologist practicing medicine in Mentor, Ohio. Dr. Demshar 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 ALK-Positive Non-Small Cell Lung Cancer, Malabsorption, Classical Hodgkin Lymphoma, and Smoldering Multiple Myeloma.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Lake Health/University Hospitals Seidman Cancer Center Physicians

    9485 Mentor Ave Ste 107-117, 
    Mentor, OH 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Kristina Mele is an Oncologist practicing medicine in Mentor, Ohio. Dr. Mele 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 ALK-Positive Non-Small Cell Lung Cancer, Smoldering Multiple Myeloma, Relapsed Refractory Multiple Myeloma (RRMM), and Gastroesophageal Junction Cancer.

    Experienced in Vitamin B12 Deficiency
    Geriatrics
    Experienced in Vitamin B12 Deficiency
    Geriatrics

    Lake Hospital System Inc.

    9485 Mentor Ave Ste 210, 
    Mentor, OH 
     (0.9 miles away)
    Languages Spoken:
    English

    Stephen Baum is a primary care provider, practicing in Geriatrics in Mentor, Ohio. Dr. Baum is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Alzheimer's Disease, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Hypertension.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Lake Health/University Hospitals Seidman Cancer Center

    9485 Mentor Ave Ste 3, 
    Mentor, OH 
     (0.9 miles away)
    Languages Spoken:
    English

    Maria Espinosa is an Oncologist practicing medicine in Mentor, Ohio. Dr. Espinosa 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 Breast Cancer, Paget Disease of the Breast, Inflammatory Breast Cancer, and Angiosarcoma.

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

    Lake Hospital System Inc.

    9485 Mentor Ave Ste 210, 
    Mentor, OH 
     (0.9 miles away)
    Languages Spoken:
    English

    Nicholas Detore is a primary care provider, practicing in Internal Medicine in Mentor, Ohio. Dr. Detore 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 Maturity Onset Diabetes of the Young, Coronary Heart Disease, Lung Metastases, and Urinary Tract Infection in Children.

    Experienced in Vitamin B12 Deficiency
    General Surgery
    Experienced in Vitamin B12 Deficiency
    General Surgery

    Lake County Foot & Ankle Associates LLC

    8334 Mentor Ave Ste 100, 
    Mentor, OH 
     (0.9 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English

    Hayley Iosue is a General Surgeon practicing medicine in Mentor, Ohio. She has been practicing medicine for over 10 years. Dr. Iosue 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 Hammer Toe, Fungal Nail Infection, Corns and Calluses, and Ingrown Toenail.

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

    UH Brunner Sanden Deitrick Wellness Center Radiology

    8655 Market St, 
    Mentor, OH 
     (1.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Robin Znidarsic is a primary care provider, practicing in Family Medicine in Mentor, Ohio. Dr. Znidarsic 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 Multisystem Inflammatory Syndrome in Children (MIS-C), COVID-19, High Cholesterol, and Familial Combined Hyperlipidemia.

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

    Mentor Medical Office Building

    7060 Wayside Dr, 
    Mentor, OH 
     (2.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Marianne Sumego is a primary care provider, practicing in Internal Medicine in Mentor, Ohio. Dr. Sumego 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 Cri-Du-Chat Syndrome, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.

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

    Office

    2570 Som Center Rd Fl 2, 
    Willoughby Hills, OH 
     (4.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Blazenka Skugor is a primary care provider, practicing in Internal Medicine in Willoughby Hills, Ohio. Dr. Skugor 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 Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and Familial Hypertension.

    Experienced in Vitamin B12 Deficiency
    Experienced in Vitamin B12 Deficiency

    Lake Hospital System Inc

    36100 Euclid Ave Ste 240, 
    Willoughby, OH 
     (4.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mihaela Donca is a primary care provider, practicing in Geriatrics in Willoughby, Ohio. Dr. Donca 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 Infant Hyperglycemia, Tracheitis, Blood Clots, Endoscopy, and Ureteroscopy.

    Experienced in Vitamin B12 Deficiency
    Sleep Medicine
    Experienced in Vitamin B12 Deficiency
    Sleep Medicine

    Office

    36100 Euclid Ave Ste 210, 
    Willoughby, OH 
     (4.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Dennis Jurcevic is a Sleep Medicine provider practicing medicine in Willoughby, Ohio. Dr. Jurcevic 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 Obstructive Sleep Apnea, Drowsiness, Excessive Daytime Sleepiness, and Irregular Sleep-Wake Syndrome.

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

    Willoughby Hills Family Health Center, South Building

    2570 Som Center Road, 
    Willoughby Hills, OH 
     (7.1 miles away)
    Languages Spoken:
    English, Arabic
    Offers Telehealth

    Dalia Mossad is a primary care provider, practicing in Internal Medicine in Willoughby Hills, Ohio. Dr. Mossad is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Hypertension, Familial Hypertension, and High Cholesterol. Dr. Mossad is board certified in American Board Of Internal Medicine, 2002.

    Showing 1-20 of 52

    Last Updated: 04/28/2026

    When should I see a Vitamin B12 Deficiency doctor near Mentor, OH?

    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 Mentor, OH?

    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 Mentor, OH?

    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 Mentor, OH?

    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 Mentor, OH?

    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 Mentor, OH?

    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 Mentor, OH?

    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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