Dr. Delphine Ong, MD

Dr. Delphine Ong, MD

Oncology  ·  
Female  ·  
59 y/o

Accepting new patients

Dr. Delphine Ong, MD is an oncology specialist in Sacramento, CA and has been practicing for 27 years. She specializes in oncology, hematology & oncology, and more.Read her story

Mercy Medical Group

3301 C St Ste 550

Sacramento, CA 95816
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Insurance Accepted

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

Learn about Dr. Ong

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Ong performs your care needs compared to other doctors.

Blood Disorders
very high
more than 99% of peers
very high
more than 98% of peers
Breast Diseases
very high
more than 95% of peers

Dr. Ong's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Dr. Ong's bio

This content was provided by Dr. Ong "I have been a Board certified Oncologist, here in Sacramento for over twenty years, and still enjoy most the one on one relationship created with my patients. I was born in Manila, Philippines, and came to the U.S. for post graduate training at Cook County Hospital in Chicago. I completed my fellowship training at Georgetown University Medical Center, in Washington D.C. and was privileged to be mentored by numerous excellent clinicians including Dr. Sandra Swain, known for her interest and research in breast cancer. After fellowship, I moved to Los Angeles and joined a specialty group practice at Cedars-Sinai Hospital. In 1994, I moved to Sacramento to work with a 7 person hematology and oncology practice. Throughout my career and especially in Sacramento, I have been blessed to work with same- minded professionals who strive for compassionate and excellent patient care. I was nominated by the medical community and honored with the 2015 Golden Stethoscope Award from the Sierra Sacramento Valley Medical Society. In my free time, I love to spend time with my husband of twenty two years, cross stitch, shop at Nordstrom and read a good book. I am a member of the American Society for Clinical Oncology."
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Care Philosophy

This content was provided by Dr. Ong "When a patient presents with a new cancer diagnosis, I clarify the potential goals of treatment, cure or palliation. If cure is the goal, it means 100% eradication and permanent removal of the disease. Palliative treatment controls cancer activity while preserving quality of life. Oncology has evolved to be a complex specialty and other specialties like pathology, surgery and radiation are involved at all stages of workup and treatment. I usually review the most up to date information using peer-reviewed databases like National Comprehensive Cancer Network (NCCN) clinical practice guidelines. Family is encouraged to attend appointments, take notes, and ask questions. It is important for the patient and his/her family to be informed of the natural history of the cancer, prognosis, treatment options, and side effects of treatment. This would allow them to make the most appropriate decisions about their care."
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5  Specialties

  • Oncology
  • Breast Oncology
  • Hematology & Oncology
  • Internal Medicine
  • Medical Oncology

2  Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*
  • Medical Oncology
    Accredited by: American Board of Internal Medicine*

85  Conditions Treated

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7  Procedures

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • University Of The Philippines Manila, College Of Medicine
    Medical School | Graduated 1983
  • Cook County Hospital-Chicago, Il
    Residency Hospital | Completed 1988
  • Georgetown University-Lombardi Cancer Center-Washington D.C.
    Fellowship Hospital | Completed 1991

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Ong has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Ong does not have any memberships or affiliations listed. If you are Dr. Ong and would like to add memberships or affiliations, please update your profile.

Dr. Ong's Reviews

Likelihood of recommending Dr. Ong to family and friends
18 total reviews (1 has a comment)

Likelihood to Recommend (18)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Ong's Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    10 to 15 minutes

Patient Comments (1)

Very caring, spends great deal of time with patients. Great listener! Saved my life.
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