William Karl Andersen, MD
NPI 1538135900ActiveIndividual· Dermatology· Lancaster, PA
Dermatology (MD) in Lancaster, Pennsylvania, trained at Columbia University College of Physicians and Surgeons (class of 1987). In 2024 Medicare paid $395,310 for 1,568 patients, and Part D covered 685 of their prescriptions, 89% of them generic. Janssen Biotech, Inc. was the largest of 2 companies reporting payments in 2024, $115.60 in all, mostly education.
Overview
| NPI | 1538135900 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 27, 2006 |
| Last updated in NPPES | Dec 7, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | MD061425L | PA |
| Dermatology, Dermatopathology | 207ND0900X | MD061425L | PA |
| Pathology, Anatomic Pathology & Clinical Pathology | 207ZP0102X | MD061425L | PA |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,568 |
|---|---|
| Services billed | 5,618 across 94 procedure codes |
| Paid by Medicare | $395,310 |
Part D prescriptions in 2024
| Prescriptions (claims) | 685 · 836 30-day fills |
|---|---|
| Patients | 342 |
| Total drug cost | $322,405 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Columbia University College of Physicians and Surgeons |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Dermatology |
Medical group
- Lancaster Skin Center PCLancaster, PA · 2 clinicians
Hospital affiliation
- Lancaster General HospitalLancaster, PA
Industry payments (Open Payments)
- 2024$115.60 · 2 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $99.00 | 1 |
| Astellas Pharma US Inc | $16.60 | 1 |
What the 2024 payments were for
- Education$99.00 · 1 payment
- Food and Beverage$16.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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