Nathan Lim
NPI 1396286720ActiveIndividual· Internal Medicine· Downey, CA
Internal Medicine in Downey, California, trained at Boston University School of Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $1,195,424 for 1,911 claims, against $22,832 paid for services in 2024. Glaxosmithkline, LLC. reported $16.50 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1396286720 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 18, 2017 |
| Last updated in NPPES | Aug 12, 2022 |
| Certified by provider | Aug 12, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A157848 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 | 100 |
|---|---|
| Services billed | 450 across 19 procedure codes |
| Paid by Medicare | $22,832 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,911 · 4,295 30-day fills |
|---|---|
| Patients | 345 |
| Total drug cost | $1,195,424 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Rheumatology |
Medical group
- Pih Health PhysiciansSanta Fe Springs, CA · 622 clinicians
Hospital affiliations
- Pih Health Downey HospitalDowney, CA
- Pih Health Hospital-WhittierWhittier, CA
Industry payments (Open Payments)
- 2025$16.50 · 1 payment from 1 company
- 2024$192.21 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $16.50 | 1 |
What the 2025 payments were for
- Food and Beverage$16.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 129 internal medicine physicians in Downey · All internal medicine physicians in California