Ernest S. Han, MD
NPI 1639247950ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· Duarte, CA
Obstetrics & Gynecology, Gynecologic Oncology (MD) in Duarte, California, trained at University of Texas Medical Branch at Galveston (class of 2000). In 2024 Medicare paid $54,775 for 227 patients, and Part D covered 84 of their prescriptions, 85% of them generic. Pfizer Inc. was the largest of 6 companies reporting payments in 2024, $194.51 in all, mostly food and beverage.
Overview
| NPI | 1639247950 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 4, 2006 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Oct 29, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | A85994 | CA |
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 - Gynecological Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 227 |
|---|---|
| Services billed | 422 across 53 procedure codes |
| Paid by Medicare | $54,775 |
Part D prescriptions in 2024
| Prescriptions (claims) | 84 · 92 30-day fills |
|---|---|
| Patients | 47 |
| Total drug cost | $6,521 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Gynecological Oncology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Industry payments (Open Payments)
- 2024$194.51 · 8 payments from 6 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $63.06 | 2 |
| Astrazeneca Pharmaceuticals LP | $34.35 | 2 |
| Novartis Pharmaceuticals Corporation | $29.83 | 1 |
| Tempus Ai, Inc | $27.62 | 1 |
| Merck Sharp & Dohme LLC | $22.44 | 1 |
What the 2024 payments were for
- Food and Beverage$194.51 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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