Byong-Wha Esther Lee, MD
NPI 1881613412ActiveIndividual· Internal Medicine· Canyon Country, CA
Internal Medicine (MD) in Canyon Country, California, trained at Oregon Health Sciences University School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $215,873 for 4,226 claims, against $46,503 paid for services in 2024.
Overview
| NPI | 1881613412 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 18, 2006 |
| Last updated in NPPES | Jul 2, 2020 |
| Certified by provider | Jul 2, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G68100 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 122 |
|---|---|
| Services billed | 938 across 55 procedure codes |
| Paid by Medicare | $46,503 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,226 · 11,498 30-day fills |
|---|---|
| Patients | 430 |
| Total drug cost | $215,873 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Oregon Health Sciences University School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Infectious Disease |
Medical group
- Providence Facey Medical FoundationValencia, CA · 385 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 internal medicine physicians in Canyon Country · All internal medicine physicians in California