The 20 Best Grass Allergy Doctors Near Me in Castro Valley, CA

Find the Top Grass Allergy Experts and Specialists

The 20 Best Grass Allergy Doctors near Castro Valley, CA

Last Updated: 02/22/2026

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MediFind found 194 doctor with experience in Grass Allergy near Castro Valley, CA. Of these, 178 are Experienced, 15 are Advanced and 1 are Distinguished.

Location
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194 providers found
    Experienced in Grass Allergy
    Pulmonary Medicine
    Experienced in Grass Allergy
    Pulmonary Medicine

    Navdeep Singh M.D.

    19845 Lake Chabot Rd, 
    Castro Valley, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Navdeep Singh is a Pulmonary Medicine provider in Castro Valley, California. Dr. Singh is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Lung Metastases, Lung Nodules, Asthma in Children, and Chronic Obstructive Pulmonary Disease (COPD).

    Sanjeev Jain
    Distinguished in Grass Allergy
    Allergy and Immunology
    Distinguished in Grass Allergy
    Allergy and Immunology

    Office

    7677 Oakport St Ste 105, 
    Oakland, CA 
     (8.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sanjeev Jain is an Allergy and Immunologist in Oakland, California. Dr. Jain is rated as a Distinguished provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Grass Allergy, Hives, Allergic Rhinitis, and Sinusitis.

    Advanced in Grass Allergy
    Allergy and Immunology
    Advanced in Grass Allergy
    Allergy and Immunology

    Allergy Asthma & Sinus Centers Of Silicon Valley Inc.

    20400 Lake Chabot Rd Ste 304, 
    Castro Valley, CA 
     (1.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Kenneth Lien is an Allergy and Immunologist in Castro Valley, California. Dr. Lien is rated as an Advanced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Food Allergy, and Sinusitis.

    Learn about our expert tiers
    Experienced in Grass Allergy
    Family Medicine
    Experienced in Grass Allergy
    Family Medicine

    Stanford Medicine Partners

    20642 John Dr, 
    Castro Valley, CA 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ling Xu is a primary care provider, practicing in Family Medicine in Castro Valley, California. Dr. Xu is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. Her top areas of expertise are Dementia, Diabetic Hyperglycemic Hyperosmolar Syndrome, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Grass Allergy
    Family Medicine
    Experienced in Grass Allergy
    Family Medicine

    Stanford Medicine Partners

    20642 John Dr, 
    Castro Valley, CA 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Cristina Gesmundo is a primary care provider, practicing in Family Medicine in Castro Valley, California. Dr. Gesmundo is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. Her top areas of expertise are High Cholesterol, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Experienced in Grass Allergy
    Family Medicine
    Experienced in Grass Allergy
    Family Medicine

    Stanford Medicine Partners

    20642 John Dr, 
    Castro Valley, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Jade Bito is a primary care provider, practicing in Family Medicine in Castro Valley, California. Dr. Bito is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. Her top areas of expertise are High Cholesterol, Vitamin D Deficiency, Type 2 Diabetes (T2D), and Obesity in Children.

    Experienced in Grass Allergy
    Experienced in Grass Allergy

    Office

    22101 Redwood Rd Ste B, 
    Castro Valley, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Najibulrahman Saifulrahman is a primary care provider, practicing in General Practice in Castro Valley, California. Dr. Saifulrahman is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Tracheitis, Asthma, Opisthotonos, and Muscle Spasms.

    Experienced in Grass Allergy
    Pulmonary Medicine
    Experienced in Grass Allergy
    Pulmonary Medicine

    David C. Bradshaw M.D. APC

    19830 Lake Chabot Rd Ste C, 
    Castro Valley, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Laurence Athos is a Pulmonary Medicine provider in Castro Valley, California. Dr. Athos is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Emphysema, Bullae, Pulmonary Fibrosis, and Idiopathic Pulmonary Fibrosis.

    Experienced in Grass Allergy
    Family Medicine
    Experienced in Grass Allergy
    Family Medicine

    Office

    13847 E 14th St Ste 108, 
    San Leandro, CA 
     (2.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Christi Cheng is a primary care provider, practicing in Family Medicine in San Leandro, California. Dr. Cheng is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. Her top areas of expertise are Diabetic Nephropathy, Type 2 Diabetes (T2D), Bronchitis, and High Cholesterol.

    Experienced in Grass Allergy
    Family Medicine
    Experienced in Grass Allergy
    Family Medicine

    Douglas D. Zhang M.D. Inc.

    13851 E 14th St Ste 102, 
    San Leandro, CA 
     (2.9 miles away)
    Languages Spoken:
    English

    Douglas Zhang is a primary care provider, practicing in Family Medicine in San Leandro, California. Dr. Zhang is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, and Bronchitis.

    Experienced in Grass Allergy
    Internal Medicine
    Experienced in Grass Allergy
    Internal Medicine

    Chao Ho MD Inc.

    13847 E 14th St Ste 113, 
    San Leandro, CA 
     (2.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Chao Ho is a primary care provider, practicing in Internal Medicine in San Leandro, California. Dr. Ho is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Chronic Cough, Hypertension, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Grass Allergy
    Experienced in Grass Allergy

    R. S. Rajah M.D. Inc.

    13847 E 14th St Ste 112, 
    San Leandro, CA 
     (2.9 miles away)
    Languages Spoken:
    English

    Dionisio Fernandes is a Pediatrics provider in San Leandro, California. Dr. Fernandes is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Allergic Rhinitis, Grass Allergy, and Sinusitis.

    Experienced in Grass Allergy
    Internal Medicine
    Experienced in Grass Allergy
    Internal Medicine

    St. Rose Hospital

    27200 Calaroga Ave, 
    Hayward, CA 
     (4.3 miles away)
    Languages Spoken:
    English

    Khashayar Montazeri is a primary care provider, practicing in Internal Medicine in Hayward, California. Dr. Montazeri is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Stroke, Sepsis, Pneumonia, Colonoscopy, and Gastrostomy.

    Experienced in Grass Allergy
    Internal Medicine
    Experienced in Grass Allergy
    Internal Medicine

    Hayward Pharmacy

    27212 Calaroga Ave, 
    Hayward, CA 
     (4.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Houman Sharifi is a primary care provider, practicing in Internal Medicine in Hayward, California. Dr. Sharifi is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are High Cholesterol, Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, and Hypertension.

    Experienced in Grass Allergy
    Internal Medicine
    Experienced in Grass Allergy
    Internal Medicine

    Hayward Pharmacy

    27212 Calaroga Ave, 
    Hayward, CA 
     (4.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Nidhi Johri is a primary care provider, practicing in Internal Medicine in Hayward, California. Dr. Johri is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. Her top areas of expertise are Acrospiroma, Hypertension, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Grass Allergy
    Experienced in Grass Allergy

    Diablo Valley Critical Care PC

    5401 Norris Canyon Rd Ste 308, 
    San Ramon, CA 
     (6.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Narendra Malani is a Geriatrics provider in San Ramon, California. Dr. Malani is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Lung Metastases, Pneumonia, Chronic Obstructive Pulmonary Disease (COPD), Gastrostomy, and Microdiscectomy.

    Experienced in Grass Allergy
    Intensive Care Medicine
    Experienced in Grass Allergy
    Intensive Care Medicine

    Diablo Valley Critical Care PC

    5401 Norris Canyon Rd Ste 308, 
    San Ramon, CA 
     (6.9 miles away)
    Languages Spoken:
    English

    Mustafa Kazemi is an Intensive Care Medicine provider in San Ramon, California. Dr. Kazemi is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Bronchiectasis, Lung Metastases, Pleural Effusion, Gastrostomy, and Microdiscectomy.

    Charles Lee
    Advanced in Grass Allergy
    Allergy and Immunology
    Advanced in Grass Allergy
    Allergy and Immunology

    Fremont Center

    3200 Kearney Street, Building 2, Floor 2, 
    Fremont, CA 
     (11.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Charles Lee is an Allergy and Immunologist in Fremont, California. Dr. Lee is rated as an Advanced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Hives, Vibratory Urticaria, Chronic Spontaneous Urticaria (CSU), and Allergic Rhinitis. Dr. Lee is currently accepting new patients.

    Advanced in Grass Allergy
    Advanced in Grass Allergy

    Office

    2305 Camino Ramon Ste 225, 
    San Ramon, CA 
     (6.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Matthew Lodewick is a Pediatrics provider in San Ramon, California. Dr. Lodewick is rated as an Advanced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Hives.

    Michael Lenoir
    Experienced in Grass Allergy
    Allergy and Immunology
    Experienced in Grass Allergy
    Allergy and Immunology

    Office

    7677 Oakport St Ste 105, 
    Oakland, CA 
     (8.6 miles away)
    Languages Spoken:
    English

    Michael Lenoir is an Allergy and Immunologist in Oakland, California. Dr. Lenoir is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Asthma, Eosinophilic Asthma, Allergic Rhinitis, and Hives.

    Showing 1-20 of 194

    Last Updated: 02/22/2026

    What is the definition of Grass Allergy?

    Many people are allergic to pollens from grass and weeds. These allergies most often occur in the late spring and summer.

    This article is for information only. DO NOT use it to treat or manage an actual poison exposure. If you or someone you are with has an exposure, call your local emergency number (such as 911), or your local poison control center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States.

    When should I see a Grass Allergy doctor near Castro Valley, 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 Grass Allergy doctor near Castro Valley, 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 Grass Allergy doctors near Castro Valley, 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 Grass Allergy doctors near Castro Valley, 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 Grass Allergy doctor near Castro Valley, 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 Grass Allergy doctor search results page. 

    Why is it important to get a second opinion from a different Grass Allergy 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 Grass Allergy doctor near Castro Valley, 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 Grass Allergy 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 Grass Allergy 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 Grass Allergy doctors near Castro Valley, CA?

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

    Look for the filter feature on the left-side of the Grass Allergy 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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