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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.

Jason Ling, MD

4.8 out of 5 (128 Ratings)
  • Endocrinology
    (Board Certified)
Additional Language Spoken
Medical Groups & Affiliations
  • St. Jude Affiliated Physician
  • St. Jude Heritage Medical Group
St. Jude Heritage Fullerton - Endocrinology
100 East Valencia Mesa Drive
Suite 105
Fullerton, CA 92835
Accepting New Patients

Primary Office

St. Jude Heritage Fullerton - Endocrinology
100 East Valencia Mesa Drive
Suite 105
Fullerton, CA 92835
Get Directions
(714) 446-5640

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Endocrinology
      (Board Certified)
    Secondary Specialties
    • Internal Medicine
      (Board Certified)
    Education & Training
    • Medical School
      St. George's University School of Medicine - 2013
    • Internship
      Stony Brook University - 2014
    • Residency
      Stony Brook University School of Medicine - 2016
    • Fellowship
      Hofstra Northwell School of Medicine - 2018
  • Biography


    American Board of Internal Medicine - 2016
  • 28-May-2019
    *Dr. Ling has turned out to be a great replacement for *Dr. Erayet. I thought *Dr. Erayet was wonderful, but I am VERY happy with the care I have received from *Dr. Ling and will continue to see him.
    Considering how young Dr Ling is...he speaks AMAZINGLY good 'old people"...He really made me comfortable about the upcoming surgery and medical care I will be needing and I know HE is the one I want to work with...His nurse is WONDERFUL and friendly...
    Although I was disappointed when I first scheduled the appointment that I could not get in for three months, I was very pleased with Dr Ling and feel very comfortable that I am in his care.
    I love Dr. Ling. He is thorough and explains procedures very well. He has an excellent chair side manner.
    Dr. Ling is very good, he listen to what I have to say and explains himself very clearly to me. He tells me what medicines he is changing and why and what to expect from the change. He doesn't cut corners but does get right to the point.
    33 Total Comments Page 1 2 3 4 5 6 7   Next