The 20 Best Sinusitis Doctors Near Me in Ontario, CA

Find the Top Sinusitis Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 283 doctor with experience in Sinusitis near Ontario, CA. Of these, 256 are Experienced, 25 are Advanced and 2 are Distinguished.

Location
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283 providers found
    Distinguished in Sinusitis
    Otolaryngology
    Distinguished in Sinusitis
    Otolaryngology

    Inland Ear Nose And Throat A Medical Group Inc.

    1030 E Foothill Blvd Ste 101, 
    Upland, CA 
     (3.0 miles away)
    Languages Spoken:
    English

    Natee Poopat is an Otolaryngologist practicing medicine in Upland, California. Dr. Poopat is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Sinusitis, Empyema, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Infant Hearing Loss, and Myringotomy.

    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    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 Advanced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Empyema, Sinusitis, Cellulitis, and Vertigo.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    Tarek Ezzeddine MD Inc.

    10841 White Oak Ave Ste 103, 
    Rancho Cucamonga, CA 
     (4.7 miles away)
    Languages Spoken:
    English

    Tarek Ezzeddine is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Ezzeddine is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Acute Cystitis, Tracheitis, Cellulitis, and Urinary Tract Infection in Children.

    Learn about our expert tiers
    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    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 Sinusitis. 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 Sinusitis
    Otolaryngology
    Advanced in Sinusitis
    Otolaryngology

    Inland Ear Nose And Throat A Medical Group Inc.

    1030 E Foothill Blvd Ste 101, 
    Upland, CA 
     (3.0 miles away)
    Languages Spoken:
    English

    Clara Olcott is an Otolaryngologist practicing medicine in Upland, California. Dr. Olcott is rated as an Advanced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 24 other conditions, according to our data. Her clinical expertise encompasses Familial Deafness, Ozena, Palatal Myoclonus, and Nonallergic Rhinopathy.

    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    Family Medicine

    Morris Kokhab M.D. A Medical Corporation

    974 W Foothill Blvd, 
    Upland, CA 
     (3.1 miles away)
    Languages Spoken:
    English

    Louis Dibernardo is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Dibernardo is rated as an Advanced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Tracheitis, Lymphangitis, Otitis, and Cellulitis.

    Advanced in Sinusitis
    Otolaryngology
    Advanced in Sinusitis
    Otolaryngology

    Ontario Medical Center

    2295 S Vineyard Avenue, 
    Ontario, CA 
     (3.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Samaneh Ashktorab is an Otolaryngologist practicing medicine in Ontario, California. Dr. Ashktorab is rated as an Advanced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Sinusitis, Cheilitis Glandularis, Tonsil Stones, and Nonallergic Rhinopathy. Dr. Ashktorab is currently accepting new patients.

    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    Family Medicine

    Office

    1601 Monte Vista Ave Ste 190, 
    Claremont, CA 
     (4.4 miles away)
    Languages Spoken:
    English

    Monique Castro is a primary care provider, practicing in Family Medicine in Claremont, California. Dr. Castro is rated as an Advanced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 35 other conditions, according to our data. Her clinical expertise encompasses Acute Cystitis, Otitis, Asthma in Children, and Eosinophilic Asthma.

    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    Family Medicine

    Office

    1601 Monte Vista Ave Ste 190, 
    Claremont, CA 
     (4.4 miles away)
    Languages Spoken:
    English

    Dana Homer is a primary care provider, practicing in Family Medicine in Claremont, California. Dr. Homer is rated as an Advanced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 39 other conditions, according to our data. Her clinical expertise encompasses Cellulitis, Parinaud Oculoglandular Syndrome, Otitis, and Peptic Ulcer.

    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    Family Medicine

    Office

    1601 Monte Vista Ave Ste 190, 
    Claremont, CA 
     (4.4 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English

    Irene Sung is a primary care provider, practicing in Family Medicine in Claremont, California. She has been practicing medicine for over 10 years. Dr. Sung is rated as an Advanced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 19 other conditions, according to our data. Her clinical expertise encompasses Parinaud Oculoglandular Syndrome, Cellulitis, Otitis, and Peptic Ulcer.

    Advanced in Sinusitis
    Allergy and Immunology
    Advanced in Sinusitis
    Allergy and Immunology

    Allergy And Asthma Specialty Center

    9045 Haven Ave, Ste 101, 
    Rancho Cucamonga, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    Joshua Gibbs is an Allergy and Immunologist practicing medicine in Rancho Cucamonga, California. Dr. Gibbs is rated as an Advanced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Allergic Conjunctivitis, Conjunctivitis (Pink Eye), Grass Allergy, and Allergic Rhinitis. Dr. Gibbs is board certified in Allergy & Immunology and Internal Medicine.

    Experienced in Sinusitis
    General Practice
    Experienced in Sinusitis
    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 Experienced provider by MediFind in the treatment of Sinusitis. 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.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    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 Experienced provider by MediFind in the treatment of Sinusitis. 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.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    S. M. Hammad Rizvi, M.D., Inc.

    901 San Bernardino Rd, 
    Upland, CA 
     (2.5 miles away)
    Experience:
    25+ years
    Languages Spoken:
    English
    Offers Telehealth

    Syed Rizvi is a primary care provider, practicing in Family Medicine in Upland, California. He has been practicing medicine for over 25 years. Dr. Rizvi is rated as an Experienced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Hypertensive Heart Disease, Multisystem Inflammatory Syndrome in Children (MIS-C), COVID-19, Gastrostomy, and Endoscopy. Dr. Rizvi is board certified in American Board Of Family Medicine.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    Edge Family Medicine

    440 N Mountain Ave, 
    Upland, CA 
     (2.6 miles away)
    Experience:
    20+ years
    Languages Spoken:
    English

    Darlene Espinosa is a primary care provider, practicing in Family Medicine in Upland, California. She has been practicing medicine for over 20 years. Dr. Espinosa is rated as an Experienced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Type 2 Diabetes (T2D). Dr. Espinosa is board certified in American Board Of Family Medicine.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    Edge Family Medicine

    440 N Mountain Ave, 
    Upland, CA 
     (2.6 miles away)
    Experience:
    20+ years
    Languages Spoken:
    English

    Mike Zuniga is a primary care provider, practicing in Family Medicine in Upland, California. He has been practicing medicine for over 20 years. Dr. Zuniga is rated as an Experienced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Hypertension, Familial Hypertension, and Cirrhosis. Dr. Zuniga is board certified in American Board Of Family Medicine.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    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 Experienced provider by MediFind in the treatment of Sinusitis. 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.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    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 Experienced provider by MediFind in the treatment of Sinusitis. 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.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    Romeo Samouh MD Inc.

    811 E 11th St Ste 102, 
    Upland, CA 
     (2.8 miles away)
    Languages Spoken:
    English

    Romeo Samouh is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Samouh is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Acrospiroma, Maturity Onset Diabetes of the Young, Vitamin D Deficiency, and Marie Unna Congenital Hypotrichosis.

    Experienced in Sinusitis
    Pediatrics
    Experienced in Sinusitis
    Pediatrics

    Sunil K. Saini M.D. Inc.

    600 N Mountain Ave Ste B100, 
    Upland, CA 
     (2.8 miles away)
    Languages Spoken:
    English

    Sunil Saini is a Pediatrics provider practicing medicine in Upland, California. Dr. Saini is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Allergic Rhinitis, Sinusitis, Grass Allergy, and Hives.

    Showing 1-20 of 283

    Last Updated: 04/28/2026

    What is the definition of Sinusitis?

    Sinusitis is present when the tissue lining the sinuses become swollen or inflamed. It occurs as the result of an inflammatory reaction or an infection from a virus, bacteria, or fungus.

    When should I see a Sinusitis 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 Sinusitis 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 Sinusitis 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 Sinusitis 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 Sinusitis 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 Sinusitis doctor search results page. 

    Why is it important to get a second opinion from a different Sinusitis 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 Sinusitis 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 Sinusitis 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 Sinusitis 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 Sinusitis doctors near Ontario, CA?

    Look for the filter feature on the left side of the Sinusitis 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 Sinusitis doctor that offers video calls?

    Look for the filter feature on the left-side of the Sinusitis 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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