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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.

Chao-I Lin, MD

  • Allergy and Immunology
    (Board Certified)
Additional Language Spoken
Medical Groups & Affiliations
  • St. Joseph Heritage Medical Group
  • St. Joseph Hospital Affiliated Physicians
  • St. Jude Affiliated Physicians
  • St. Jude Heritage Medical Group
Allergy Partners of California
505 South Main Street
Suite 250
Orange, CA 92868
Accepting New Patients

Primary Office

Allergy Partners of California
505 South Main Street
Suite 250
Orange, CA 92868
Get Directions
(714) 771-7994
(714) 744-4167
Mon - Fri: 9 a.m. - 5 p.m.
Weekend Hours
Sat8:00AM - 11:00AM

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Allergy and Immunology
      (Board Certified)
    Education & Training
    • Medical School
      China Medical College - 1982
    • Internship
      Michael Reese Hospital - 1987
    • Residency
      Michael Reese Hospital - 1989
    • Fellowship
      University of California, San Francisco - 1991
    Areas of Interest
    Food Allergies, Bronchial Asthma, Allergic Rhinitis, Esophagitis
  • Biography


    Dr. Lin developed severe asthma when he was about four years old and had to go to the hospital for intensive care. His condition affected him throughout his childhood years up until middle school; “I couldn’t play sports or quickly walk up stairs to get to my classrooms. I remember telling one of my teachers that I wanted to be a children’s doctor when I grew up, because I wanted to help kids overcome their health concerns and live happy, active lives.”
    Dr. Lin went on to earn his medical degree and become an allergy and immunology specialist.

    “I really enjoy my job because I get to work with patients of all ages and help them find effective, lasting relief for their allergies, asthma and related conditions.”

    Actively involved in the community, Dr. Lin likes to give his time and energy to many organizations. These include the Irvine Unified School District, South Coast Chinese Culture Association and local PTAs and churches. He also teaches medical residents at his office throughout the year to increase their knowledge of allergies, asthma and immunology.