Ern Loh, M.D.
NPI 1144450917ActiveIndividual· Dermatology· Redwood City, CA
Dermatology (M.D.) in Redwood City, California, trained at University of Washington School of Medicine (class of 2008). Part D covered 677 prescriptions written in 2024, 72% of them generic. Pfizer Inc. was the largest of 3 companies reporting payments in 2025, $242.83 in all, mostly food and beverage.
Overview
| NPI | 1144450917 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 15, 2009 |
| Last updated in NPPES | Aug 26, 2025 |
| Certified by provider | Aug 26, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 109730 | 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 - Dermatology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 677 · 742 30-day fills |
|---|---|
| Patients | 248 |
| Total drug cost | $574,006 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Dermatology |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Industry payments (Open Payments)
- 2025$242.83 · 3 payments from 3 companies
- 2024$374.52 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $106.21 | 1 |
| Novartis Pharmaceuticals Corporation | $68.50 | 1 |
| Leo Pharma Inc. | $68.12 | 1 |
What the 2025 payments were for
- Food and Beverage$242.83 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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