Oliver S. Eng, M.D.
NPI 1245556406ActiveIndividual· Surgery, Surgical Oncology· Orange, CA
Surgery, Surgical Oncology (M.D.) with University Surgeons of Orange A Medical Group, practicing in Orange, California. Medicare paid $19,673 for services to 26 patients in 2024. Dilon Technologies, Inc. was the largest of 2 companies reporting payments in 2025, $28,113 in all, mostly consulting fees. Lists Uci Health-Orange as a hospital affiliation.
Overview
| NPI | 1245556406 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 13, 2010 |
| Last updated in NPPES | Nov 14, 2022 |
| Certified by provider | Nov 14, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Surgical Oncology Primary | 2086X0206X | A140751 | CA |
| Surgery, Surgical Oncology | 2086X0206X | 036146817 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Surgical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 26 |
|---|---|
| Services billed | 67 across 30 procedure codes |
| Paid by Medicare | $19,673 |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Surgical Oncology |
| Secondary specialties | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- University Surgeons of Orange A Medical GroupOrange, CA · 116 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$28,113 · 26 payments from 2 companies
- 2024$1,352 · 7 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dilon Technologies, Inc. | $26,613 | 24 |
| Applied Medical Resources Corporation | $1,500 | 2 |
What the 2025 payments were for
- Consulting Fee$26,250 · 9 payments
- Food and Beverage$1,863 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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