Catherine Koper, MD
NPI 1245466929ActiveIndividual· Internal Medicine· Newport Beach, CA
Internal Medicine (MD) in Newport Beach, California, licensed in CA and NJ, with an NPI issued in June 2009. Their prescriptions cost Medicare Part D more than their services did: $499,966 for 1,232 claims, against $181,607 paid for services in 2024. Viiv Healthcare Company was the largest of 3 companies reporting payments in 2025, $200.74 in all, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian as a hospital affiliation.
Overview
| NPI | 1245466929 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 8, 2009 |
| Last updated in NPPES | Sep 29, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A13199 | CA |
| Internal Medicine | 207R00000X | 25MA09408000 | NJ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 309 |
|---|---|
| Services billed | 1,971 across 10 procedure codes |
| Paid by Medicare | $181,607 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,232 · 1,276 30-day fills |
|---|---|
| Patients | 205 |
| Total drug cost | $499,966 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Infectious Disease |
| Telehealth | Offers telehealth |
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Other facilities
- Hoag Home HealthHome health agency · Newport Beach, CA
Industry payments (Open Payments)
- 2025$200.74 · 7 payments from 3 companies
- 2024$180.63 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $118.19 | 4 |
| Gilead Sciences, Inc. | $57.12 | 2 |
| Shionogi Inc | $25.43 | 1 |
What the 2025 payments were for
- Food and Beverage$200.74 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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