The 20 Best Sinusitis Doctors Near Me in San Marcos, CA

Find the Top Sinusitis Experts and Specialists

Last Updated: 09/26/2026

Save doctors for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Already have a doctor?
Find A Second Opinion

MediFind found 228 doctor with experience in Sinusitis near San Marcos, CA. Of these, 211 are Experienced, 15 are Advanced and 2 are Distinguished.

Location
LocationClose
228 providers found
    Experienced in Sinusitis
    Internal Medicine
    Experienced in Sinusitis
    Internal Medicine

    Truecare

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

    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 Sinusitis. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Myelitis, AIDS Dysmorphic Syndrome, AIDS Dementia Complex, and HIV/AIDS. Dr. Poniachik is currently accepting new patients.

    Experienced in Sinusitis
    Allergy and Immunology | Rheumatology
    Experienced in Sinusitis
    Allergy and Immunology | Rheumatology
    Referral may be required

    San Marcos Medical Offices

    400 Craven Road, 
    San Marcos, CA 
     (1.1 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Accepting New Patients

    Kevin Tse is an Allergy and Immunologist and a Rheumatologist practicing medicine in San Marcos, California. He has been practicing medicine for over 18 years. Dr. Tse is rated as an Experienced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Angioedema, Hives, Asthma in Children, and Hereditary Alpha-Tryptasemia. Dr. Tse is currently accepting new patients.

    Experienced in Sinusitis
    Internal Medicine
    Experienced in Sinusitis
    Internal Medicine

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

    2375 S Melrose Dr, 
    Vista, CA 
     (4.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    John Clancy is a primary care provider, practicing in Internal Medicine in Vista, California. Dr. Clancy is rated as an Experienced 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 Fifth Disease, Diabetic Neuropathy, Herpetic Stomatitis, and Gingivostomatitis. Dr. Clancy is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    UC San Diego Health Rancho Bernardo Urgent Care

    16950 Via Tazon, 
    San Diego, CA 
     (9.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ian-cromwell Diaz is a primary care provider, practicing in Family Medicine in San Diego, California. Dr. Diaz is rated as an Experienced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses AIDS Dementia Complex, AIDS Dysmorphic Syndrome, HIV/AIDS, and Myelitis.

    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    Family Medicine

    Truecare

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

    Devarshi Nath is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Nath is rated as an Advanced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses COVID-19, Multisystem Inflammatory Syndrome in Children (MIS-C), Bronchitis, and Lymphangitis.

    Distinguished in Sinusitis
    Allergy and Immunology
    Distinguished in Sinusitis
    Allergy and Immunology
    Referral may be required

    Allergy And Immunology Medical Group

    2067 W Vista Way, 
    Vista, CA 
     (7.6 miles away)
    Languages Spoken:
    English

    Robert Ziering is an Allergy and Immunologist practicing medicine in Vista, California. Dr. Ziering is rated as a Distinguished provider by MediFind in the treatment of Sinusitis. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Grass Allergy, Sinusitis, Allergic Rhinitis, and Hives. Dr. Ziering is board certified in American Board Of Allergy And Immunology.

    Advanced in Sinusitis
    Otolaryngology
    Advanced in Sinusitis
    Otolaryngology
    Referral may be required

    ENT Associates Medical Group

    3907 Waring Road, Suite 1, 
    Oceanside, CA 
     (7.9 miles away)
    Languages Spoken:
    English

    Richard Liu is an Otolaryngologist practicing medicine in Oceanside, California. Dr. Liu is rated as an Advanced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Osteochondroma, Nasal Polyps, Low Nasal Bridge, and Nasal Septal Hematoma.

    Advanced in Sinusitis
    Otolaryngology
    Advanced in Sinusitis
    Otolaryngology
    Referral may be required

    ENT Associates Medical Group

    3907 Waring Road, Suite 1, 
    Oceanside, CA 
     (7.9 miles away)
    Languages Spoken:
    English

    Sarah Carroll is an Otolaryngologist practicing medicine in Oceanside, California. Dr. Carroll is rated as an Advanced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 21 other conditions, according to our data. Her clinical expertise encompasses Familial Deafness, Tinnitus, Infant Hearing Loss, Ruptured Eardrum, and Gastrostomy. Dr. Carroll is board certified in American Board Of Otolaryngology.

    Advanced in Sinusitis
    Family Medicine
    Advanced in Sinusitis
    Family Medicine

    Sharp Rees-Stealy Downtown-Ophthalmology

    16899 W Bernardo Dr Fl 2, 
    San Diego, CA 
     (9.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jayakumar Priyanga is a primary care provider, practicing in Family Medicine in San Diego, California. Dr. Priyanga 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 Obesity in Children, Food Allergy, Obesity, Vaginal Cysts, and Intrauterine Device Insertion. Dr. Priyanga is currently accepting new patients.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    Graybill Medical Group Inc

    277 Rancheros Dr, Suite 100, 
    San Marcos, CA 
     (0.6 miles away)
    Languages Spoken:
    English

    Isela Penunuri is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Penunuri is rated as an Experienced 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 High Cholesterol, Generalized Anxiety Disorder (GAD), Gastroesophageal Reflux Disease (GERD), and Hypertension.

    Experienced in Sinusitis
    Internal Medicine
    Experienced in Sinusitis
    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 Sinusitis. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Osteomyelitis in Children, and Hypertension.

    Experienced in Sinusitis
    Experienced in Sinusitis

    Truecare

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

    Jorge Otanez-Cervantes is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Otanez-Cervantes is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Sciatica, Obesity in Children, Scoliosis, and Type 2 Diabetes (T2D).

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    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 Sinusitis. Her clinical expertise encompasses Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Obesity in Children, and Chronic Pain.

    Experienced in Sinusitis
    Internal Medicine
    Experienced in Sinusitis
    Internal Medicine

    Cleveland Clinic

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

    Richard Stein is a primary care provider, practicing in Internal Medicine in San Marcos, California. Dr. Stein 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 High Cholesterol. Dr. Stein is currently accepting new patients.

    Experienced in Sinusitis
    Internal Medicine
    Experienced in Sinusitis
    Internal Medicine

    Cleveland Clinic

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

    Annie Tan is a primary care provider, practicing in Internal Medicine in San Marcos, California. Dr. Tan is rated as an Experienced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 28 other conditions, according to our data. Her clinical expertise encompasses Sitosterolemia, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Hypertension.

    Experienced in Sinusitis
    Internal Medicine
    Experienced in Sinusitis
    Internal Medicine

    Cleveland Clinic

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

    Lauryn Benninger is a primary care provider, practicing in Internal Medicine in San Marcos, California. Dr. Benninger is rated as an Experienced provider by MediFind in the treatment of Sinusitis. She is also highly rated in 15 other conditions, according to our data. Her clinical expertise encompasses Bronchiectasis, Cystic Fibrosis, Nontuberculous Mycobacterial Lung Disease, Allergic Bronchopulmonary Aspergillosis, and Lung Transplant. Dr. Benninger is currently accepting new patients.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    San Marcos Medical Offices

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

    Curtis Buck is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Buck is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Asthma, Asthma in Children, and Cellulitis. Dr. Buck is currently accepting new patients.

    Experienced in Sinusitis
    Allergy and Immunology
    Experienced in Sinusitis
    Allergy and Immunology
    Referral may be required

    Kaiser Permanente San Marcos Medical Offices - Allergy Department

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

    Donald Woodmansee is an Allergy and Immunologist practicing medicine in San Marcos, California. Dr. Woodmansee is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Hives, Asthma in Children, Chronic Spontaneous Urticaria (CSU), and Vibratory Urticaria. Dr. Woodmansee is currently accepting new patients.

    Experienced in Sinusitis
    Family Medicine
    Experienced in Sinusitis
    Family Medicine

    San Marcos Medical Office

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

    Angelo Olmedo is a primary care provider, practicing in Family Medicine in San Marcos, California. Dr. Olmedo is rated as an Experienced provider by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Pustules, Opisthotonos, Muscle Spasms, and Parinaud Oculoglandular Syndrome. Dr. Olmedo is currently accepting new patients.

    Experienced in Sinusitis
    Internal Medicine
    Experienced in Sinusitis
    Internal Medicine

    Cleveland Clinic

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

    Nicole Frerichs is a primary care provider, practicing in Internal Medicine in San Marcos, California. Dr. Frerichs is rated as an Experienced provider by MediFind in the treatment of Sinusitis. Her clinical expertise encompasses Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Obesity. Dr. Frerichs is currently accepting new patients.

    Showing 1-20 of 228

    Last Updated: 09/26/2026

    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 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 Sinusitis 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 Sinusitis 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 Sinusitis 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 Sinusitis 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 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 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 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 San Marcos, 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 

    Read more about our Content Policy. 

    More Sinusitis Doctors by city