Takako Gwen Iwasaki, M.D.
NPI 1639240237ActiveIndividual· Dermatology· Torrance, CA
Dermatology (M.D.) in Torrance, California, trained at University of California, Geffen School of Medicine (class of 1985). 547 Medicare patients in 2024, $234,784 paid; nearly all of their 565 Part D prescriptions were generic (95%). Botanix Sb Inc was the largest of 5 companies reporting payments in 2025, $400.46 in all, mostly food and beverage.
Overview
| NPI | 1639240237 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 13, 2006 |
| Last updated in NPPES | Jan 9, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | G60009 | 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 - Dermatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 547 |
|---|---|
| Services billed | 4,956 across 43 procedure codes |
| Paid by Medicare | $234,784 |
Part D prescriptions in 2024
| Prescriptions (claims) | 565 · 624 30-day fills |
|---|---|
| Patients | 242 |
| Total drug cost | $56,119 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Dermatology |
Industry payments (Open Payments)
- 2025$400.46 · 6 payments from 5 companies
- 2024$1,064 · 18 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Botanix Sb Inc | $150.00 | 1 |
| Amgen Inc. | $117.01 | 1 |
| Organon LLC | $64.97 | 1 |
| Janssen Biotech, Inc. | $35.56 | 2 |
| Regeneron Healthcare Solutions, Inc. | $32.92 | 1 |
What the 2025 payments were for
- Food and Beverage$400.46 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 54 dermatologists in Torrance · All dermatologists in California