Yih Jen Kok, M.D.
NPI 1518928829ActiveIndividual· Internal Medicine, Cardiovascular Disease· San Gabriel, CA
Internal Medicine, Cardiovascular Disease (M.D.) with David C P Chen, M.D., Inc and 1 other group, practicing in San Gabriel, California. Their prescriptions cost Medicare Part D more than their services did: $1,155,244 for 8,213 claims, against $692,669 paid for services in 2024. Abbott Laboratories was the largest of 3 companies reporting payments in 2025, $175.52 in all, mostly food and beverage. Lists Alhambra Hospital Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1518928829 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 29, 2006 |
| Last updated in NPPES | May 7, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A71806 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,641 |
|---|---|
| Services billed | 24,049 across 176 procedure codes |
| Paid by Medicare | $692,669 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,213 · 18,320 30-day fills |
|---|---|
| Patients | 1,110 |
| Total drug cost | $1,155,244 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical groups
- David C P Chen, M.D., IncSan Gabriel, CA · 19 clinicians
- Southern California Heart Centers A Medical CorporationSan Gabriel, CA · 18 clinicians
Hospital affiliations
- Alhambra Hospital Medical CenterAlhambra, CA
- Garfield Medical CenterMonterey Park, CA
- Greater El Monte Community HospitalSouth El Monte, CA
- San Gabriel Valley Medical CenterSan Gabriel, CA
Industry payments (Open Payments)
- 2025$175.52 · 9 payments from 3 companies
- 2024$799.75 · 17 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $86.69 | 5 |
| Medtronic, Inc. | $70.06 | 3 |
| Teleflex LLC | $18.77 | 1 |
What the 2025 payments were for
- Food and Beverage$175.52 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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