Esther Hwang
NPI 1851696595ActiveIndividual· Physician Assistant· Chino Hills, CA
Physician Assistant with Pacific Dermatology Institute, practicing in Chino Hills, California. Their prescriptions cost Medicare Part D more than their services did: $520,515 for 956 claims, against $10,636 paid for services in 2024. Genzyme Corporation was the largest of 16 companies reporting payments in 2025, $677.63 in all, mostly food and beverage.
Overview
| NPI | 1851696595 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Jan 11, 2011 |
| Last updated in NPPES | Aug 11, 2024 |
| Certified by provider | Aug 11, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 69 |
|---|---|
| Services billed | 186 across 20 procedure codes |
| Paid by Medicare | $10,636 |
Part D prescriptions in 2024
| Prescriptions (claims) | 956 · 1,042 30-day fills |
|---|---|
| Patients | 354 |
| Total drug cost | $520,515 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Pacific Dermatology InstituteVictorville, CA · 32 clinicians
Industry payments (Open Payments)
- 2025$677.63 · 28 payments from 16 companies
- 2024$1,231 · 52 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $140.35 | 5 |
| Novartis Pharmaceuticals Corporation | $73.91 | 3 |
| Ucb, Inc. | $60.37 | 2 |
| Teleflex LLC | $48.26 | 2 |
| Amgen Inc. | $47.48 | 2 |
What the 2025 payments were for
- Food and Beverage$677.63 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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