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    Respiratory Care & Interventional Pulmonology

    1 Hoag Dr, Newport Beach, CA 92663

    (949) 764-4624

    Hoag Pulmonologists provide expertise in pulmonary and interventional pulmonology medicine, offering an array of comprehensive services for patients with illnesses that affect the lungs and breath.

    Hoag For Life

    The Hoag Health Network consists of hospitals, urgent care, and health care centers in Orange County. Known for superior patient care, they are dedicated to the latest advancements in health care.

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    Respiratory Care

    Using the latest technology for diagnostic and therapeutic interventions, Hoag provides optimum patient care in both the outpatient and inpatient acute care setting. Pulmonologists have expertise in a range of respiratory conditions including, but not limited to: lung cancer diagnosis and treatment; chronic obstructive lung diseases, asthma, interstitial lung diseases, pulmonary vascular disease, pulmonary hypertension, sleep disorders; acute and chronic respiratory failure, simple and complex lung infections.
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    Interventional Pulmonology

    Hoag has been Orange County’s leader in the advanced diagnosis and treatment of respiratory-related disorders for decades. With the introduction of our new Interventional Pulmonology program, we take that commitment to excellence to the next level.
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    Recognized Clinical Care Excellence

    Hoag was once again the highest ranked hospital in Orange County in the 2024–2025 and ranked high performing in pulmonology and lung surgery by U.S. News & World Report. This marks the sixth year in a row Hoag has achieved this level of recognition.
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    Meet Our Experts

    Thomas J. Diamant, MD

    Thomas J. Diamant, MD

    <p>Raised in Montreal, Dr. Diamant studied at McGill University in the Accelerated Pre-Medical Program, during which time he was recognized each year by the Faculty of Medicine as a McGill University Scholar.</p> <p>He began his Internship training in Straight Medicine at Toronto General Hospital and continued his training as a Resident in Internal Medicine at St. Mary Medical Center, Long Beach. In 1984, Dr. Diamant completed his Fellowship in Respiratory Physiology and Medicine at Harbor-UCLA Medical Center in Torrance. He received Board Certification in Internal Medicine in 1984, in Pulmonary Medicine in 1988, and in Critical Care Medicine in 1991.</p> <p>Apart from his clinical research, Dr. Diamant served as Medical Director in the Pulmonary Rehabilitation Program and as Medical Director in the Sleep Abnormalities Laboratory at St. Mary Medical Center, Long Beach. He has served as Chairman of the Division of Pulmonary Medicine at Hoag Hospital as well as Chairman of the Department of Internal Medicine. Dr. Diamant holds an appointment as the Medical Director of the Hoag Hospital Department of Respiratory Care and is a Fellow of the College of Chest Physicians.</p> <p>Dr. Diamant enjoys cycling in his spare moments and spending time with his family.</p>

    Ahmed S. El-Bershawi, MD

    Ahmed S. El-Bershawi, MD

    Dr. El-Bershawi is the Service Chief of Hoag Sleep Center Irvine and a board certified sleep specialist who is dedicated to the delivery of quality patient-centered care with a comprehensive, individualized and cutting edge approach. He is committed to providing high-quality care to patients affected by pulmonary disease, sleep-related disorders or life-threatening critical illness.<br><br>Dr. El-Bershawi completed a residency in Internal Medicine at the Medical College of Wisconsin, followed by a fellowship in Pulmonary and Critical Care Medicine at Kansas University Medical Center. Dr. El-Bershawi also completed a fellowship in Sleep Medicine at the University of New Mexico Sleep Center.<br><br>Dr. El-Bershawi is a diplomate of the American Board of Sleep Medicine, and the American Board of Pulmonary & Critical Care Medicine.

    Javier A. Longoria, MD

    Javier A. Longoria, MD

    Interventional Pulmonology

    Respiratory Care Facilities

    Hoag Hospital Newport Beach Building Sunset 2025

    Hoag Hospital Newport Beach

    1 Hoag Drive

    Newport Beach, CA 92663

    949-764-4624

    hoag-hospital-irvine - image

    Hoag Hospital Irvine

    16200 Sand Canyon Avenue

    Irvine, CA 92618

    949-764-4624

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