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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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.

Silvia Alonzo, PA

4.8 out of 5 (137 Ratings)
  • Family Medicine
Medical Groups & Affiliations
  • California Academy of Physician Assistants
St. Jude Heritage Medical Group
1514 S. Valley Vista Dr.
Diamond Bar, CA 91765

Primary Office

St. Jude Heritage Medical Group
1514 S. Valley Vista Dr.
Diamond Bar, CA 91765
Get Directions
(909) 860-1144
(909) 860-8307
Mon - Thurs 7:30 a.m. - 6 p.m. Fri 7:30 a.m. - 5:30 p.m.
Weekend Hours
Sat 9 a.m. - 1 p.m.

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Family Medicine
    Education & Training
    • College
      Bachelor's Degree, California State Polytechnic University - 2006
    • College
      Master of Science: Physician Assistant Studies, Western University of Health Science - 2011
  • Biography


    State of California Physician Assistant Board Certification 2011
    National Commission on Certification of Physician Assistants 2011
  • 21-Dec-2018
    Dr. Alonso is very clear when describing any issues. She is also very attentive to Drug interactions when deciding on prescriptions.
    8. As long as I needed.
    On the last question I said good instead of very good as this was my first appointment with her. Time will tell how this goes.
    P.A. Alonzo was great!!
    14 Total Comments Page 1 2 3   Next