Careers With St. Joseph Health

Our Values are more than just words.

They form the heart and soul of St. Joseph Health and are the prime reason we attract and retain high-caliber employees who believe in the sanctity of their work in our faith-based setting.

Recent News

Irvine school nurses, staff learn Stop the Bleed techniques to respond in mass-casualty situation

Irvine school nurses and athletic trainers on Tuesday, Jan. 30, learned simple techniques that could save lives in a shooting or other ...

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Families anticipate exciting community blessing of surgical center

A community is as strong as its hospital, and with recent investments into Covenant Health Plainview, it’s evident that to our friends ...

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Severe Flu Season Tightens Its Grip on U.S.

Americans are being hit with one of the worst flu seasons in years, with misery now widespread across 46 states, health officials say. In ...

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Here you can find news articles and press releases from St. Joseph Health and it's locations.

About St. Joseph Health

SJH provides a full range of care facilities including 16 acute care hospitals, home health agencies, hospice care, outpatient services, skilled nursing facilities, community clinics and physician groups. All of our hospital and home health entities are accredited by the Joint Commission. In our award-winning facilities, SJH maintains a "continuum of care," matched to the diverse needs of the urban centers, smaller cities and rural communities who depend on us every day.

Giving back to the community. St. Joseph Health System Office

Thomas Diamant, MD

  • Pulmonology
    (Board Certified)
Additional Language Spoken
520 Superior Ave.
Suite 200
Newport Beach, CA 92663
Accepting New Patients

Primary Office

520 Superior Ave.
Suite 200
Newport Beach, CA 92663
Get Directions
(949) 642-6200
(949) 642-9359

More Information

Medical Groups & Affiliations
  • Hoag Affiliated Physicians
  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Pulmonology
      (Board Certified)
  • Biography



    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.

    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.

    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.

    Dr. Diamant enjoys cycling in his spare moments and spending time with his family.

    American Board of Internal Medicine - Pulmonary Disease
    American Board of Internal Medicine - Internal Medicine