Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Andrea Ong, MD

Individual provider Specialist · NPI 1902826472

Dr. Andrea Ong, MD practises Pathology in Sacramento, California. Graduated from University of Massachusetts Medical School in 1995, 31 years ago. Practices with Diagnostic Pathology Medical Group Inc, a 32-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
31
Trained at
University of Massachusetts Medical School
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3301 C St Ste #200-E
Sacramento, CA 95816-3300
Phone: (916) 447-6267
Fax: (916) 447-0621
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence A75526 (CA)
Specialist Taxonomy 174400000X · Licence A75526 (CA)

Record details

NPI number1902826472
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 20, 2006
Last updated in NPPESJanuary 27, 2021
Certification dateJanuary 27, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 1995 (31 years in practice)
Group practice Diagnostic Pathology Medical Group Inc — 32 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,323
Services billed 3,037 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Diagnostic Pathology Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 32 clinicians in the practice; 12 are shown here.

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