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

Dr. Oliver S. Eng, MD

Individual provider Surgical Oncology Physician · NPI 1245556406

Dr. Oliver S. Eng, MD is a Surgical Oncology in Orange, California. Qualified in 2010, 16 years ago. Practices with University Surgeons of Orange a Medical Group, a 120-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California and Illinois.

Years since qualifying
16
Licensed in
CA, IL
In the registry since
2010
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

101 The City Dr S
Orange, CA 92868-3201
Phone: (714) 880-7812
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 333 City Blvd W Ste 1600, Orange, CA 92868-5903 — (714) 456-6262

Specialties & licences

Surgical Oncology Physician (primary) Taxonomy 2086X0206X · Licence A140751 (CA)
Surgical Oncology Physician Taxonomy 2086X0206X · Licence 036146817 (IL)

Record details

NPI number1245556406
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 13, 2010
Last updated in NPPESNovember 14, 2022
Certification dateNovember 14, 2022
Mailing address200 S Manchester Ave Ste 300, Orange, CA 92868-3219

Medicare enrollment

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

Medicare specialtySURGICAL ONCOLOGY
Also practisesGENERAL SURGERY
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice University Surgeons Of Orange A Medical Group — 120 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Orange