Karen Denise Allen, MD
NPI 1942200183ActiveIndividual· Dermatology· San Luis Obispo, CA
Dermatology (MD) in San Luis Obispo, California, trained at University of California, Irvine, California College of Medicine (class of 1996). 623 Medicare patients in 2024, $128,001 paid; nearly all of their 188 Part D prescriptions were generic (95%). Janssen Biotech, Inc. was the largest of 33 companies reporting payments in 2025, $2,689 in all, mostly food and beverage.
Overview
| NPI | 1942200183 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 29, 2005 |
| Last updated in NPPES | Oct 10, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | A64792 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 623 |
|---|---|
| Services billed | 3,173 across 63 procedure codes |
| Paid by Medicare | $128,001 |
Part D prescriptions in 2024
| Prescriptions (claims) | 188 · 205 30-day fills |
|---|---|
| Patients | 93 |
| Total drug cost | $5,766 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Dermatology |
Industry payments (Open Payments)
- 2025$2,689 · 90 payments from 33 companies
- 2024$2,349 · 84 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $438.70 | 10 |
| Daiichi Sankyo Inc. | $252.13 | 13 |
| Emd Serono, Inc. | $216.27 | 8 |
| Regeneron Healthcare Solutions, Inc. | $199.92 | 5 |
| Astrazeneca Pharmaceuticals LP | $145.51 | 11 |
What the 2025 payments were for
- Food and Beverage$2,689 · 90 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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