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

Find the Top Vitamin D Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 355 doctor with experience in Vitamin D Deficiency near Ontario, CA. Of these, 299 are Experienced, 53 are Advanced and 3 are Distinguished.

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355 providers found
    Experienced in Vitamin D Deficiency
    Endocrinology
    Experienced in Vitamin D Deficiency
    Endocrinology

    Rubina Aqeel MD Inc.

    1183 E Foothill Blvd Ste 260, 
    Upland, CA 
     (2.9 miles away)
    Languages Spoken:
    English

    Rubina Aqeel is an Endocrinologist practicing medicine in Upland, California. Dr. Aqeel is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 29 other conditions, according to our data. Her clinical expertise encompasses Hyperthyroidism, Sheehan Syndrome, Hypopituitarism, and Isolated Hypogonadotropic Hypogonadism.

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

    Chino Hills Family Medical Group

    15361 Central Avenue, 
    Chino, CA 
     (4.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Cynthia Moreno is a primary care provider, practicing in Family Medicine in Chino, California. Dr. Moreno is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Empyema, Sinusitis, Cellulitis, and Vertigo.

    Experienced in Vitamin D Deficiency
    Cardiology
    Experienced in Vitamin D Deficiency
    Cardiology

    Office

    10832 Laurel St Ste 101, 
    Rancho Cucamonga, CA 
     (4.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Vatsal Mody is a Cardiologist practicing medicine in Rancho Cucamonga, California. Dr. Mody is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Hypertension, Atherosclerosis, Angioplasty, and Pacemaker Implantation.

    Learn about our expert tiers
    Advanced in Vitamin D Deficiency
    General Practice
    Advanced in Vitamin D Deficiency
    General Practice

    California Medical Clinic Inc.

    402 E Holt Blvd, 
    Ontario, CA 
     (0.1 miles away)
    Languages Spoken:
    English

    David Lozano is a primary care provider, practicing in General Practice in Ontario, California. Dr. Lozano is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Osteomyelitis in Children, Type 2 Diabetes (T2D), High Cholesterol, and Cirrhosis.

    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Unicare Community Health Center Inc.

    437 N Euclid Ave, 
    Ontario, CA 
     (0.3 miles away)
    Languages Spoken:
    English

    William Paley is a primary care provider, practicing in Family Medicine in Ontario, California. Dr. Paley is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Obesity in Children, Obesity, Food Allergy, and Tangier Disease.

    Advanced in Vitamin D Deficiency
    Nurse Practitioner
    Advanced in Vitamin D Deficiency
    Nurse Practitioner

    Unicare Community Health Center, Inc.

    437 N Euclid Ave, 
    Ontario, CA 
     (0.3 miles away)
    Languages Spoken:
    English

    Pei Tan is a Nurse Practitioner practicing medicine in Ontario, California. Ms. Tan is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Vitamin D Deficiency, Menopause, Angiomyoma, and White Sponge Nevus.

    Advanced in Vitamin D Deficiency
    Nurse Practitioner
    Advanced in Vitamin D Deficiency
    Nurse Practitioner
    437 N Euclid Ave, 
    Ontario, CA 
     (0.3 miles away)
    Languages Spoken:
    English

    Bryan Rocha is a Nurse Practitioner practicing medicine in Ontario, California. Mr. Rocha is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Vitamin D Deficiency, Eyelid Bump, and Epidural Lipomatosis.

    Advanced in Vitamin D Deficiency
    Nurse Practitioner
    Advanced in Vitamin D Deficiency
    Nurse Practitioner

    Lincoln Heights Family & Industrial Medical Clinic

    437 N Euclid Ave Ste A, 
    Ontario, CA 
     (1.5 miles away)
    Languages Spoken:
    English

    Cathleen Manusia is a Nurse Practitioner practicing medicine in Ontario, California. Ms. Manusia is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Vitamin D Deficiency, Opioid Induced Constipation, and Periodontitis.

    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Ravinder Singh, Md, Inc.

    525 N 13th Ave, 
    Upland, CA 
     (2.6 miles away)
    Experience:
    27+ years
    Languages Spoken:
    English
    Offers Telehealth

    Ravinder Singh is a primary care provider, practicing in Family Medicine in Upland, California. He has been practicing medicine for over 27 years. Dr. Singh is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 108 other conditions, according to our data. His clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, Liver Transplant, and Knee Replacement. Dr. Singh is board certified in American Board Of Family Medicine.

    Advanced in Vitamin D Deficiency
    Nurse Practitioner
    Advanced in Vitamin D Deficiency
    Nurse Practitioner

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (2.7 miles away)
    Languages Spoken:
    English

    Roxanne Barbe is a Nurse Practitioner practicing medicine in Upland, California. Ms. Barbe is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Vitamin D Deficiency.

    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Whole Family Care Inc

    637 N 13th Ave, 
    Upland, CA 
     (2.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mina Soliman is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Soliman is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Gardner-Diamond Syndrome, Purpura, Autoerythrocyte Sensitivity, and Familial Combined Hyperlipidemia.

    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Cucamonga Valley Medical Group, Inc.

    1310 San Bernardino Rd, 
    Upland, CA 
     (2.7 miles away)
    Experience:
    26+ years
    Languages Spoken:
    English
    Offers Telehealth

    Muhammad Mowjood is a primary care provider, practicing in Family Medicine in Upland, California. He has been practicing medicine for over 26 years. Dr. Mowjood is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Obesity, Methylmalonic Acidemia with Homocystinuria, Hypermethioninemia, and Sulfite Oxidase Deficiency. Dr. Mowjood is board certified in American Osteopathic Board Of Family Practice.

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

    Cucamonga Valley Medical Group, Inc.

    5562 Philadelphia St, 
    Chino, CA 
     (2.9 miles away)
    Experience:
    15+ years
    Languages Spoken:
    English
    Offers Telehealth

    Brandon Tong is a primary care provider, practicing in Internal Medicine in Chino, California. He has been practicing medicine for over 15 years. Dr. Tong is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Obesity, Familial Hypobetalipoproteinemia, Chorea-Acanthocytosis, Familial HDL Deficiency, and Ureteroscopy. Dr. Tong is board certified in American Osteopathic Board Of Internal Medicine.

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

    Susan Biegel MD Inc.

    1004 W Foothill Blvd Ste 200, 
    Upland, CA 
     (2.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Susan Biegel is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Biegel is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 29 other conditions, according to our data. Her clinical expertise encompasses Sitosterolemia, Vitamin D Deficiency, Hypervitaminosis D, and High Cholesterol.

    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Office

    984 W Foothill Blvd Ste E, 
    Upland, CA 
     (2.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Michael Benavidez is a Family Medicine provider practicing medicine in Upland, California. Dr. Benavidez is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Vitamin D Deficiency, Generalized Pustular Psoriasis (GPP), Vitamin B12 Deficiency, and Menopause.

    Advanced in Vitamin D Deficiency
    Endocrinology | Internal Medicine
    Advanced in Vitamin D Deficiency
    Endocrinology | Internal Medicine

    Nephrology Associates Of Upland And Pomona

    536 E Foothill Blvd, 
    Upland, CA 
     (2.9 miles away)
    Experience:
    22+ years
    Languages Spoken:
    English

    Minna Huang is an Internal Medicine specialist and an Endocrinologist practicing medicine in Upland, California. She has been practicing medicine for over 22 years. Dr. Huang is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 18 other conditions, according to our data. Her clinical expertise encompasses End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and May Thurner Syndrome. Dr. Huang is board certified in American Board Of Internal Medicine.

    Advanced in Vitamin D Deficiency
    Endocrinology | Internal Medicine
    Advanced in Vitamin D Deficiency
    Endocrinology | Internal Medicine

    Nephrology Associates Of Upland And Pomona

    536 E Foothill Blvd, 
    Upland, CA 
     (2.9 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Nima Naimi is an Internal Medicine specialist and an Endocrinologist practicing medicine in Upland, California. He has been practicing medicine for over 17 years. Dr. Naimi is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Diabetic Nephropathy. Dr. Naimi is board certified in American Board Of Internal Medicine.

    Advanced in Vitamin D Deficiency
    Rheumatology
    Advanced in Vitamin D Deficiency
    Rheumatology

    Chino Valley Family Physicians A Medical Group

    13193 Central Ave Ste 100, 
    Chino, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    John Finley is a Rheumatologist practicing medicine in Chino, California. Dr. Finley is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Vitamin D Deficiency, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Multisystem Inflammatory Syndrome in Children (MIS-C), and Gout.

    Advanced in Vitamin D Deficiency
    Family Medicine
    Advanced in Vitamin D Deficiency
    Family Medicine

    Cucamonga Valley Medical Group

    7777 Milliken Ave Ste 240, 
    Rancho Cucamonga, CA 
     (4.7 miles away)
    Languages Spoken:
    English

    Eric Bekemeier is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Bekemeier is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Obesity, Cirrhosis, Familial Combined Hyperlipidemia, and Xanthoma.

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

    Harvey D. Cohen M.D. Inc.

    8330 Red Oak St Ste 201, 
    Rancho Cucamonga, CA 
     (4.7 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Nyein Tint is a primary care provider, practicing in Internal Medicine in Rancho Cucamonga, California. She has been practicing medicine for over 17 years. Dr. Tint is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Obesity, Obesity in Children, High Cholesterol, and Vitamin D Deficiency.

    Showing 1-20 of 355

    Last Updated: 04/28/2026

    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 Ontario, 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 Ontario, 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 Ontario, 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 Ontario, 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 Ontario, 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 Ontario, 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 Ontario, 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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