The 20 Best Pneumonia Doctors Near Me in Diamond Bar, CA

Find the Top Pneumonia Experts and Specialists

The 20 Best Pneumonia Doctors near Diamond Bar, CA

Last Updated: 02/22/2026

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MediFind found 431 doctor with experience in Pneumonia near Diamond Bar, CA. Of these, 320 are Experienced, 96 are Advanced and 15 are Distinguished.

Location
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431 providers found
    Distinguished in Pneumonia
    Pulmonary Medicine
    Distinguished in Pneumonia
    Pulmonary Medicine
    2141 North Harbor Boulevard, Suite 25000, 
    Fullerton, CA 
     (9.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Mark Weissig is a Pulmonary Medicine provider in Fullerton, California. Dr. Weissig is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Interstitial Lung Disease, Asthma in Children, Asthma, and Acute Interstitial Pneumonia. Dr. Weissig is currently accepting new patients.

    Distinguished in Pneumonia
    Pulmonary Medicine
    Distinguished in Pneumonia
    Pulmonary Medicine
    2501 East Chapman Avenue, Suite 225, 
    Fullerton, CA 
     (9.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Saadah Alrajab is a Pulmonary Medicine provider in Fullerton, California. Dr. Alrajab is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Atypical Pneumonia, Cerebral Hypoxia, Pneumonia, Hospital-Acquired Pneumonia, and Gastrostomy. Dr. Alrajab is currently accepting new patients.

    Experienced in Pneumonia
    Pediatrics | Internal Medicine
    Experienced in Pneumonia
    Pediatrics | Internal Medicine
    2707 South Diamond Bar Boulevard, Suite 104, 
    Diamond Bar, CA 
     (1.2 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Jonathan Ou is a primary care provider, practicing in Pediatrics and Internal Medicine in Diamond Bar, California. Dr. Ou has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Osteomyelitis in Children, High Cholesterol, Febrile Neutropenia, and Vitamin D Deficiency.

    Learn about our expert tiers
    Advanced in Pneumonia
    Intensive Care Medicine
    Advanced in Pneumonia
    Intensive Care Medicine

    Optum California-Chaparral Medical Group

    1940 N Orange Grove Ave, 
    Pomona, CA 
     (6.5 miles away)
    Languages Spoken:
    English

    Joseph Gordon is an Intensive Care Medicine provider in Pomona, California. Dr. Gordon is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Pneumonia, Pulmonary Tuberculosis, Lung Metastases, Chronic Obstructive Pulmonary Disease (COPD), and Gastrostomy.

    Advanced in Pneumonia
    Intensive Care Medicine
    Advanced in Pneumonia
    Intensive Care Medicine

    Optum California-Chaparral Medical Group

    1940 N Orange Grove Ave, 
    Pomona, CA 
     (6.5 miles away)
    Languages Spoken:
    English

    Nathaniel Soriano is an Intensive Care Medicine provider in Pomona, California. Dr. Soriano is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Chronic Obstructive Pulmonary Disease (COPD), Pneumonia, Lung Metastases, Pulmonary Aspergilloma, and Gastrostomy.

    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine
    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine

    Ahuja Md, Jaspreet S

    255 E Bonita Ave, 
    Pomona, CA 
     (7.5 miles away)
    Experience:
    23+ years
    Languages Spoken:
    English

    Jaspreet Ahuja is an Internal Medicine specialist and a Pulmonary Medicine provider in Pomona, California. Dr. Ahuja has been practicing medicine for over 23 years and is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Pneumonia, Hospital-Acquired Pneumonia, Atypical Pneumonia, Gastrostomy, and Endoscopy.

    Distinguished in Pneumonia
    Internal Medicine
    Distinguished in Pneumonia
    Internal Medicine

    Abidali Do Professional Medical Corp, Moustapha

    255 E Bonita Ave, 
    Pomona, CA 
     (7.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Moustapha Abidali is an Internal Medicine provider in Pomona, California. Dr. Abidali is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Pneumonia, Atypical Pneumonia, Hospital-Acquired Pneumonia, Hypovolemic Shock, and Gastrostomy.

    Distinguished in Pneumonia
    Infectious Disease
    Distinguished in Pneumonia
    Infectious Disease

    Emanate Health Inter-Community Hospital

    210 W San Bernardino Rd, 
    Covina, CA 
     (7.6 miles away)
    Languages Spoken:
    English

    Devesh Patel is an Infectious Disease provider in Covina, California. Dr. Patel is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Sepsis, Hospital-Acquired Pneumonia, Pneumonia, and Multisystem Inflammatory Syndrome in Children (MIS-C).

    James L. Pearle
    Experienced in Pneumonia
    Pulmonary Medicine
    Experienced in Pneumonia
    Pulmonary Medicine
    18200 Yorba Linda Boulevard, Suite 104, 
    Yorba Linda, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    James Pearle is a Pulmonary Medicine provider in Yorba Linda, California. Dr. Pearle is rated as an Experienced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Bronchiolitis Obliterans, Industrial Bronchitis, Bronchitis, and Chronic Obstructive Pulmonary Disease (COPD). Dr. Pearle is currently accepting new patients.

    Distinguished in Pneumonia
    Infectious Disease
    Distinguished in Pneumonia
    Infectious Disease

    Office

    1135 S Sunset Ave Ste 208, 
    West Covina, CA 
     (8.5 miles away)
    Languages Spoken:
    English

    Karen Guiang is an Infectious Disease provider in West Covina, California. Dr. Guiang is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Sepsis, COVID-19, Pneumonia, and Lymphangitis.

    Distinguished in Pneumonia
    Infectious Disease | Internal Medicine
    Distinguished in Pneumonia
    Infectious Disease | Internal Medicine

    Foothills Infectious Disease Medical Group, Inc.

    935 W Foothill Blvd, 
    Claremont, CA 
     (8.6 miles away)
    Experience:
    34+ years
    Languages Spoken:
    English

    Deepthi Jayasekara is an Infectious Disease specialist and an Internal Medicine provider in Claremont, California. Dr. Jayasekara has been practicing medicine for over 34 years and is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Pneumonia, Sepsis, Hospital-Acquired Pneumonia, and Lymphangitis.

    Distinguished in Pneumonia
    Infectious Disease | Internal Medicine
    Distinguished in Pneumonia
    Infectious Disease | Internal Medicine

    Foothills Infectious Disease Medical Group, Inc.

    935 W Foothill Blvd, 
    Claremont, CA 
     (8.6 miles away)
    Experience:
    43+ years
    Languages Spoken:
    English

    Hua Jiang is an Infectious Disease specialist and an Internal Medicine provider in Claremont, California. Dr. Jiang has been practicing medicine for over 43 years and is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Sepsis, COVID-19, Pneumonia, Lithotripsy, and Tissue Biopsy.

    Advanced in Pneumonia
    Pulmonary Medicine
    Advanced in Pneumonia
    Pulmonary Medicine
    2141 North Harbor Boulevard, Suite 25000, 
    Fullerton, CA 
     (9.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Edward Lawton is a Pulmonary Medicine provider in Fullerton, California. Dr. Lawton is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Lung Metastases, Asthma in Children, Asthma, and Bronchiectasis. Dr. Lawton is currently accepting new patients.

    Advanced in Pneumonia
    Pulmonary Medicine
    Advanced in Pneumonia
    Pulmonary Medicine
    2151 North Harbor Boulevard, Suite 3100, 
    Fullerton, CA 
     (9.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Julie Yoo is a Pulmonary Medicine provider in Fullerton, California. Dr. Yoo is rated as an Advanced provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Lung Metastases, Asthma in Children, Asthma, and Interstitial Lung Disease. Dr. Yoo is currently accepting new patients.

    Distinguished in Pneumonia
    Infectious Disease | Internal Medicine
    Distinguished in Pneumonia
    Infectious Disease | Internal Medicine

    Nilesh N. Patel, MD

    130 W Route 66, 
    Glendora, CA 
     (9.3 miles away)
    Experience:
    35+ years
    Languages Spoken:
    English
    Offers Telehealth

    Nilesh Patel is an Infectious Disease specialist and an Internal Medicine provider in Glendora, California. Dr. Patel has been practicing medicine for over 35 years and is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Hospital-Acquired Pneumonia, Pneumonia, Sepsis, Gastrostomy, and Endoscopy.

    Advanced in Pneumonia
    Intensive Care Medicine
    Advanced in Pneumonia
    Intensive Care Medicine

    Saadah Alrajab MD MPH Inc.

    2501 E Chapman Ave Ste 225, 
    Fullerton, CA 
     (9.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Paul Simpson is an Intensive Care Medicine provider in Fullerton, California. Dr. Simpson is rated as an Advanced provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Cerebral Hypoxia, Atypical Pneumonia, Hospital-Acquired Pneumonia, Pneumonia, and Gastrostomy.

    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine
    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine

    Adel Sandouk MD

    210 S Grand Ave, 
    Glendora, CA 
     (9.8 miles away)
    Experience:
    35+ years
    Languages Spoken:
    English

    Adel Sandouk is an Internal Medicine specialist and a Pulmonary Medicine provider in Glendora, California. Dr. Sandouk has been practicing medicine for over 35 years and is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Atypical Pneumonia, Pneumonia, Asthma, Lung Metastases, and Gastrostomy.

    Distinguished in Pneumonia
    Infectious Disease
    Distinguished in Pneumonia
    Infectious Disease

    Kindred Hospital-Baldwin Park

    14148 Francisquito Ave, 
    Baldwin Park, CA 
     (9.9 miles away)
    Languages Spoken:
    English

    Rosalina See is an Infectious Disease provider in Baldwin Park, California. Dr. See is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Pneumonia, Sepsis, Infective Endocarditis, and Methicillin-Resistant Staphylococcus Aureus (MRSA).

    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine
    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine

    California Pulmonary Associates Inc

    353 W Foothill Blvd, 
    Glendora, CA 
     (9.9 miles away)
    Experience:
    20+ years
    Languages Spoken:
    English
    Offers Telehealth

    Owais Zaidi is an Internal Medicine specialist and a Pulmonary Medicine provider in Glendora, California. Dr. Zaidi has been practicing medicine for over 20 years and is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. His top areas of expertise are Pneumonia, Hospital-Acquired Pneumonia, Atypical Pneumonia, Chronic Obstructive Pulmonary Disease (COPD), and Gastrostomy.

    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine
    Distinguished in Pneumonia
    Internal Medicine | Pulmonary Medicine

    California Pulmonary Associates Inc

    353 W Foothill Blvd, 
    Glendora, CA 
     (9.9 miles away)
    Experience:
    45+ years
    Languages Spoken:
    English

    Rohinder Sandhu is an Internal Medicine specialist and a Pulmonary Medicine provider in Glendora, California. Dr. Sandhu has been practicing medicine for over 45 years and is rated as a Distinguished provider by MediFind in the treatment of Pneumonia. Her top areas of expertise are Pneumonia, Chronic Obstructive Pulmonary Disease (COPD), Asthma in Children, Gastrostomy, and Endoscopy.

    Showing 1-20 of 431

    Last Updated: 02/22/2026

    What is the definition of Pneumonia?

    Pneumonia is inflamed or swollen lung tissue due to infection with a germ.

    This article covers community-acquired pneumonia (CAP). This type of pneumonia is found in people who have not recently been in the hospital or another health care facility such as a nursing home or rehab facility. Pneumonia that affects people in or recently released from a health care facility, such as hospitals, is called hospital-acquired pneumonia (or health care-associated pneumonia).

    When should I see a Pneumonia doctor near Diamond Bar, 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 Pneumonia doctor near Diamond Bar, 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 Pneumonia doctors near Diamond Bar, 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 Pneumonia doctors near Diamond Bar, 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 Pneumonia doctor near Diamond Bar, 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 Pneumonia doctor search results page. 

    Why is it important to get a second opinion from a different Pneumonia 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 Pneumonia doctor near Diamond Bar, 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 Pneumonia 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 Pneumonia 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 Pneumonia doctors near Diamond Bar, CA?

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

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