The 20 Best Vitamin D Deficiency Doctors Near Me in San Marcos, CA

Find the Top Vitamin D Deficiency Experts and Specialists

The 20 Best Vitamin D Deficiency Doctors near San Marcos, CA

Last Updated: 02/22/2026

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MediFind found 217 doctor with experience in Vitamin D Deficiency near San Marcos, CA. Of these, 206 are Experienced and 11 are Advanced.

Location
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217 providers found
    Experienced in Vitamin D Deficiency
    Rheumatology
    Experienced in Vitamin D Deficiency
    Rheumatology

    Kayal Medical Group Inc.

    960 W San Marcos Blvd Ste 210, 
    San Marcos, CA 
     (2.0 miles away)
    Languages Spoken:
    English

    Basma Nahlawi is a Rheumatologist in San Marcos, California. Dr. Nahlawi is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Rheumatoid Arthritis (RA), Mixed Connective Tissue Disease, MASS Phenotype, and Psoriatic Arthritis.

    Joshua Greenstein
    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    Balboa Nephrology - Escondido

    1955 Citracado Pkwy, 
    Escondido, CA 
     (3.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Joshua Greenstein is a Nephrologist in Escondido, California. Dr. Greenstein is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Nephrosclerosis. Dr. Greenstein is currently accepting new patients.

    Advanced in Vitamin D Deficiency
    Internal Medicine
    Advanced in Vitamin D Deficiency
    Internal Medicine

    John H. Clancy, Do And Tara Leigh Clancy Do Medical Corporation

    2375 S Melrose Dr, 
    Vista, CA 
     (4.4 miles away)
    Experience:
    32+ years
    Languages Spoken:
    English

    John Clancy is a primary care provider, practicing in Internal Medicine in Vista, California. Dr. Clancy has been practicing medicine for over 32 years and is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Fifth Disease, Diabetic Neuropathy, Herpetic Stomatitis, and Gingivostomatitis.

    Learn about our expert tiers
    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Office

    1954 Via Ctr # B, 
    Vista, CA 
     (4.5 miles away)
    Languages Spoken:
    English

    Ma Belen is a Family Medicine provider in Vista, California. Dr. Belen is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Vitamin D Deficiency and Muscle Spasms.

    Experienced in Vitamin D Deficiency
    Endocrinology
    Experienced in Vitamin D Deficiency
    Endocrinology

    North County Endocrine Medical Group

    625 Citracado Pkwy, 
    Escondido, CA 
     (6.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Timothy Bailey is an Endocrinologist in Escondido, California. Dr. Bailey is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Low Blood Sugar, Type 1 Diabetes (T1D), Type 2 Diabetes (T2D), and Maturity Onset Diabetes of the Young.

    Experienced in Vitamin D Deficiency
    Internal Medicine
    Experienced in Vitamin D Deficiency
    Internal Medicine

    Truecare

    150 Valpreda Rd, 
    San Marcos, CA 
     (0.6 miles away)
    Languages Spoken:
    English

    Izabela Witczak is a primary care provider, practicing in Internal Medicine in San Marcos, California. Dr. Witczak is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Osteomyelitis in Children, and Familial Hypertension.

    Experienced in Vitamin D Deficiency
    Internal Medicine
    Experienced in Vitamin D Deficiency
    Internal Medicine

    Truecare

    150 Valpreda Rd, 
    San Marcos, CA 
     (0.6 miles away)
    Languages Spoken:
    English

    Samuel Poniachik is a primary care provider, practicing in Internal Medicine in San Marcos, California. Dr. Poniachik is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Myelitis, AIDS Dysmorphic Syndrome, AIDS Dementia Complex, and HIV/AIDS.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Truecare

    150 Valpreda Rd, 
    San Marcos, CA 
     (0.6 miles away)
    Languages Spoken:
    English

    Julie Matias is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Matias is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Obesity in Children, and Chronic Pain.

    Experienced in Vitamin D Deficiency
    Physician Assistant
    Experienced in Vitamin D Deficiency
    Physician Assistant
    150 Valpreda Rd, 
    San Marcos, CA 
     (0.6 miles away)
    Languages Spoken:
    English

    Claudia Salazar is a Physician Assistant in San Marcos, California. Ms. Salazar is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Vitamin D Deficiency and Seasonal Affective Disorder (SAD).

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Scripps Coastal Medical Center San Marcos

    111 Campus Way Ste 301, 
    San Marcos, CA 
     (0.6 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Offers Telehealth

    Zariah Chappell is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Chappell has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top area of expertise is Vitamin D Deficiency.

    Experienced in Vitamin D Deficiency
    General Surgery
    Experienced in Vitamin D Deficiency
    General Surgery

    Cleveland Clinic

    400 Craven Rd, 
    San Marcos, CA 
     (1.0 miles away)
    Languages Spoken:
    English

    Pooja Varman is a General Surgeon in San Marcos, California. Dr. Varman is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Vitamin D Deficiency and Breast Cancer.

    Experienced in Vitamin D Deficiency
    Gastroenterology
    Experienced in Vitamin D Deficiency
    Gastroenterology

    Cleveland Clinic

    400 Craven Rd, 
    San Marcos, CA 
     (1.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Carlos Simons is a Gastroenterologist in San Marcos, California. Dr. Simons is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Gallbladder Disease, Jaundice, Banti's Syndrome, Gastric Bypass, and Endoscopy.

    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    Cleveland Clinic

    400 Craven Rd, 
    San Marcos, CA 
     (1.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Yuliya Sharakova is a Nephrologist in San Marcos, California. Dr. Sharakova is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Acute Kidney Failure, Glomerulonephritis, Acute Tubular Necrosis, and Low Sodium Level.

    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    CCARE San Marcos Cancer Center

    838 Nordahl Rd Fl 3, 
    San Marcos, CA 
     (1.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Edward Mcclay is an Oncologist in San Marcos, California. Dr. Mcclay is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Melanoma, Merkel Cell Carcinoma, Vitamin B12 Deficiency, and Familial Colorectal Cancer. Dr. Mcclay is currently accepting new patients.

    Experienced in Vitamin D Deficiency
    Internal Medicine
    Experienced in Vitamin D Deficiency
    Internal Medicine

    Neighborhood Healthcare

    2085 Montiel Rd Ste 102, 
    San Marcos, CA 
     (1.9 miles away)
    Languages Spoken:
    English

    Arturo Tolentino is an Internal Medicine provider in San Marcos, California. Dr. Tolentino is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Vitamin D Deficiency, Liver Failure, Gallbladder Disease, Endoscopy, and Gastrostomy.

    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    Office

    150 Valpreda Rd Ste 105, 
    San Marcos, CA 
     (1.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Maria Sebiane is a Pediatrics provider in San Marcos, California. Dr. Sebiane is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Obesity in Children, Developmental Dysphasia Familial, Vitamin D Deficiency, and Familial Short Stature (FSS). Dr. Sebiane is currently accepting new patients.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Office

    420 N Twin Oaks Valley Rd # 2352, 
    San Marcos, CA 
     (1.9 miles away)
    Languages Spoken:
    English

    Richard Zachrich is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Zachrich is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are High Cholesterol, Hyperlipidemia Type 3, Anemia, and Chronic Cough.

    Experienced in Vitamin D Deficiency
    Family Medicine
    Experienced in Vitamin D Deficiency
    Family Medicine

    Office

    314 S Twin Oaks Valley Rd Ste 114, 
    San Marcos, CA 
     (2.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Midori Rivera is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Rivera is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Sitosterolemia, High Cholesterol, Type 2 Diabetes (T2D), and Familial Hypertension.

    Experienced in Vitamin D Deficiency
    Experienced in Vitamin D Deficiency

    Palomar Medical Center

    2185 Citracado Pkwy, 
    Escondido, CA 
     (3.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Abigail Lawler is a Neurologist in Escondido, California. Dr. Lawler is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Movement Disorders, Parkinson's Disease, Memory Loss, and Dry Mouth.

    Experienced in Vitamin D Deficiency
    Internal Medicine
    Experienced in Vitamin D Deficiency
    Internal Medicine

    Uc San Diego Health-Vista

    910 Sycamore Ave, 
    Vista, CA 
     (3.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Hamid Amjadi is a primary care provider, practicing in Internal Medicine in Vista, California. Dr. Amjadi is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Type 2 Diabetes (T2D), Hypothyroidism, Hypertension, and Familial Hypertension.

    Showing 1-20 of 217

    Last Updated: 02/22/2026

    What is the definition of Vitamin D Deficiency?

    Vitamin D deficiency is when the body does not have enough vitamin D. Vitamin D is necessary for absorbing calcium and healthy bones.

    When should I see a Vitamin D Deficiency doctor near San Marcos, 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 D Deficiency doctor near San Marcos, 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 D Deficiency doctors near San Marcos, 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 D Deficiency doctors near San Marcos, 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 D Deficiency doctor near San Marcos, 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 D Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Vitamin D 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 D Deficiency doctor near San Marcos, 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 D 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 D 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 D Deficiency doctors near San Marcos, CA?

    Look for the filter feature on the left side of the Vitamin D 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 D Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Vitamin D 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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