John Lin, M.D.
Internal Medicine (M.D.) with Seven Star Hospital Associates Inc and 1 other group, practicing in South El Monte, California. In 2024 Medicare paid $29,580 for 195 patients, and Part D covered 143 of their prescriptions, 88% of them generic. Organogenesis Inc. reported $146.18 in payments in 2025, mostly food and beverage. Lists Chapman Global Medical Center and 2 other hospitals as hospital affiliations. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1689602609 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 29, 2006 |
| Last updated in NPPES | Jun 3, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G77035 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | John Kuo-Chiang Lin · Technician | 1128a2 | Oct 20, 2003 | Walnut Creek, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 195 |
|---|---|
| Services billed | 319 across 26 procedure codes |
| Paid by Medicare | $29,580 |
Part D prescriptions in 2024
| Prescriptions (claims) | 143 · 213 30-day fills |
|---|---|
| Patients | 64 |
| Total drug cost | $17,059 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Seven Star Hospital Associates IncHemet, CA · 126 clinicians
- Gem Medical Group CorporationSouth El Monte, CA · 57 clinicians
Hospital affiliations
- Chapman Global Medical CenterOrange, CA
- Coastal Communities HospitalSanta Ana, CA
- Greater El Monte Community HospitalSouth El Monte, CA
Industry payments (Open Payments)
- 2025$146.18 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organogenesis Inc. | $146.18 | 1 |
What the 2025 payments were for
- Food and Beverage$146.18 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in South El Monte
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- 1780901561