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Recent News

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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.

Marcus Lum, MD

  • Family Medicine
    (Board Certified)
Additional Language Spoken
Medical Groups & Affiliations
  • St. Jude Affiliated Physicians
Imperial Primary Care Medical Group
15625 Imperial Highway
La Mirada, CA 90638
Accepting New Patients

Primary Office

Imperial Primary Care Medical Group
15625 Imperial Highway
La Mirada, CA 90638
Get Directions
(562) 902-3000
(562) 902-9593

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Family Medicine
      (Board Certified)
    Education & Training
    • Medical School
      The Chicago Medical School - 1990
    • Internship
      PIH - 1993
    • Residency
      PIH - 1993
  • Biography


    Dr. Marcus Lum began practicing medicine over 20 years ago, working in Los Angeles and Orange County. A Southern California native, he is proud to serve the same communities he trained in and currently resides in. Beginning his education at UCLA, Dr. Lum graduated with a degree in biochemistry. He then attended The Chicago Medical School, where he received his medical degree. His training was completed at Presbyterian Intercommunity Hospital. He has been a Board Certified Family Physician ever since. Prior to his current practice, Dr. Lum served as the Vice Chairman for the Department of Family Practice at Friendly Hills Medical Group. When not at work, Dr. Lum enjoys spending time with his wife and children, taking road trips and vacations. He also likes to learn about home improvement projects (Do it yourself).
    Philosophy of Care: Utilize proven scientific evidence based medicine to help patient's maintain and optimize their health. Effective diagnostic testing that helps minimize patient's cost and yet still provide effective and efficient care. Help patients overcome their barriers to reach their goals in becoming mentally and physically well.
  • Insurance Accepted

    Insurance Accepted

    Insurance ID Numbers

    Aetna: *486210
    Blue Cross: *0DL265
    Blue Shield: 00G321900
    CIGNA: 4997522022
    CIGNA Select: 4997522027
    Health Net: 3206551165
    Health Net Senior: 5150551165
    SCAN: 865-021561
    United Healthcare: *0183440083

    *Provider ID is the same for both HMO and Medicare Advantage Plans