Thucan Timothy Bui, DO
NPI 1003493404ActiveIndividual· Emergency Medicine· Loma Linda, CA
Emergency Medicine (DO) with Faculty Physicians and Surgeons of Llusm and 1 other group, practicing in Loma Linda, California. 74 Medicare patients in 2024, $8,501 paid; nearly all of their 134 Part D prescriptions were generic (98%). Stryker Corporation was the largest of 2 companies reporting payments in 2025, $160.74 in all, mostly food and beverage. Lists Loma Linda University Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1003493404 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Mar 24, 2021 |
| Last updated in NPPES | Apr 28, 2026 |
| Certified by provider | Apr 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 23921 | CA |
| Emergency Medicine | 207P00000X | 30887 | MS |
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); Practitioner - Emergency Medicine (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 74 |
|---|---|
| Services billed | 81 across 8 procedure codes |
| Paid by Medicare | $8,501 |
Part D prescriptions in 2024
| Prescriptions (claims) | 134 · 134 30-day fills |
|---|---|
| Patients | 90 |
| Total drug cost | $2,840 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical groups
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
- MD Karan Singh Professional CorpBanning, CA · 30 clinicians
Hospital affiliations
- Loma Linda University Medical CenterLoma Linda, CA
- San Gorgonio Memorial HospitalBanning, CA
Industry payments (Open Payments)
- 2025$160.74 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $136.19 | 1 |
| Merck Sharp & Dohme LLC | $24.55 | 1 |
What the 2025 payments were for
- Food and Beverage$160.74 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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