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Dr. Delphine Ong, MD

Dr. Delphine Ong, MD

Age 62 Oncology F
(20) 20 reviews

Telehealth available

Accepting New Patients


Dr. Delphine Ong, MD is a oncology specialist in Elk Grove, CA. Dr. Ong completed a residency at Cook Co Hosp. She currently practices at Mercy Medical Group and is affiliated with Mercy General Hospital. She accepts multiple insurance plans. Dr. Ong is board certified in Medical Oncology.


  • Georgetown University-Lombardi Cancer Center- Washington D.C., Fellowship Hospital — 1991
  • Cook Co Hosp, Residency Hospital — 1988
  • University of the Philippines College of Medicine, Medical School — 1982

Insurance Accepted

  • Aetna
  • Anthem
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • CareFirst Blue Cross Blue Shield
  • ChoiceCare Network
  • Cigna
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • Health Net
  • HealthSmart - Interplan Health Group
  • MultiPlan
  • Networks By Design
  • Pacific Foundation for Medical Care
  • Tricare
  • UnitedHealthCare
  • Western Health Advantage

* Please verify this information when scheduling an appointment.


  1. Mercy Medical Group

    1. 1
      Dignity Health Medical Foundation
      9394 Big Horn Blvd, Elk Grove, CA 95758 Existing Patients: (916) 691-8500

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Dr. Ong is superb. Thorough. Thoughtful. Meticulous. Empathetic. Highly interactive. Enormously competent.
Thomas J Harrison Jr in Sacramento , CA — Jan 13, 2019
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Dr. Delphine Ong, MD
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Frequently Asked Questions

Dr. Ong frequently treats Colorectal Cancer, Breast Cancer, and Antiphospholipid Syndrome (APS).  

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Hospital Affiliations

  • Mercy General Hospital
  • Sutter Amador Hospital