Christine Chang, MD
NPI 1003132671ActiveIndividual· Emergency Medicine· Oxnard, CA
Emergency Medicine (MD) with Cep America - California, practicing in Oxnard, California. 569 Medicare patients in 2024, $80,236 paid; nearly all of their 320 Part D prescriptions were generic (94%). Abiomed was the largest of 2 companies reporting payments in 2025, $167.35 in all, mostly food and beverage. Lists St Johns Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1003132671 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 8, 2010 |
| Last updated in NPPES | Aug 18, 2020 |
| Certified by provider | Aug 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A151725 | CA |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 569 |
|---|---|
| Services billed | 836 across 25 procedure codes |
| Paid by Medicare | $80,236 |
Part D prescriptions in 2024
| Prescriptions (claims) | 320 · 322 30-day fills |
|---|---|
| Patients | 252 |
| Total drug cost | $4,770 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical group
- Cep America - CaliforniaPomona, CA · 1,292 clinicians
Hospital affiliation
- St Johns Regional Medical CenterOxnard, CA
Industry payments (Open Payments)
- 2025$167.35 · 2 payments from 2 companies
- 2024$137.55 · 9 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $144.36 | 1 |
| Helsinn Therapeutics (U.S.), Inc. | $22.99 | 1 |
What the 2025 payments were for
- Food and Beverage$167.35 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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