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

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Severe Flu Season Tightens Its Grip on U.S.

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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.

Mark D. Weissig, MD

4.7 out of 5 (148 Ratings)
  • Pulmonology
    (Board Certified)
Medical Groups & Affiliations
  • St. Jude Heritage Medical Group
2141 N. Harbor Blvd.
Suite 2500
Fullerton, CA 92835
Accepting New Patients

Primary Office

2141 N. Harbor Blvd.
Suite 2500
Fullerton, CA 92835
Get Directions
(714) 626-8650
(714) 626-8696

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Pulmonology
      (Board Certified)
    Secondary Specialties
    • Internal Medicine
      (Board Certified)
    Education & Training
    • Medical School
      Duke University School of Medicine- Durham, NC
    • Internship
      Duke University Medical Center- Durham, NC
    • Residency
      Duke University Medical Center- Durham, NC
    • Fellowship
      UCLA School of Medicine- Los Angeles, CA
  • 30-Aug-2018
    The doctor provided me the concerns about my health situation and explained in depth how to take my new medications.
    Dr. Weissig is one of the best doctors I have ever seen. He has very good interaction with me. He is extremely good at diagnosing problems. I specifically asked him for clarification on how loss of weight might improve my health. His explanation was realistic, but encouraging, and showed thoughtfulness and care. I admire him greatly.
    the best.
    Always good experience.
    I have had talk with doctor & hoping things better. I do respect doctor or would not continue. Too many patients!
    13 Total Comments Page 1 2 3   Next