Eui San Cha, M.D.
NPI 1497047757ActiveIndividual· Hospitalist· Orange, CA
Hospitalist (M.D.) with Providence Medical Foundation, practicing in Orange, California. 251 Medicare patients in 2024, $66,439 paid; nearly all of their 445 Part D prescriptions were generic (90%). Salix Pharmaceuticals, A Division of Bausch Health US, LLC was the largest of 2 companies reporting payments in 2025, $77.68 in all, mostly food and beverage. Lists Providence St. Joseph Hospital as a hospital affiliation.
Overview
| NPI | 1497047757 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 5, 2011 |
| Last updated in NPPES | Oct 21, 2020 |
| Certified by provider | Oct 21, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A124833 | CA |
| Internal Medicine | 207R00000X | A124833 | CA |
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 | 251 |
|---|---|
| Services billed | 675 across 12 procedure codes |
| Paid by Medicare | $66,439 |
Part D prescriptions in 2024
| Prescriptions (claims) | 445 · 460 30-day fills |
|---|---|
| Patients | 194 |
| Total drug cost | $20,884 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence St. Joseph HospitalOrange, CA
Industry payments (Open Payments)
- 2025$77.68 · 3 payments from 2 companies
- 2024$137.65 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $45.43 | 2 |
| Pfizer Inc. | $32.25 | 1 |
What the 2025 payments were for
- Food and Beverage$77.68 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hospitalists in Orange
- 1033599824
- 1043888274
- 1104211176
- 1144300229
- 1144592924
- 1245483700
- 1265720056
- 1306103791
- 1306474127
- 1326058371
- 1326068990
- 1356412241
All 82 hospitalists in Orange · All hospitalists in California