Mark D. Callender, P.A.
NPI 1942406616ActiveIndividual· Physician Assistant· Slidell, LA
Physician Assistant (P.A.) with Louisiana Dermatology Associates, LLC, practicing in Slidell, Louisiana. Their prescriptions cost Medicare Part D more than their services did: $44,275 for 354 claims, against $8,888 paid for services in 2024. Galderma Laboratories, L.P. was the largest of 16 companies reporting payments in 2025, $1,623 in all, mostly food and beverage.
Overview
| NPI | 1942406616 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A. |
| Sole proprietor | No |
| NPI issued | Jun 21, 2007 |
| Last updated in NPPES | Oct 15, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | P.A.A10540 | LA |
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 - Physician Assistant (LA); Practitioner - Physician Assistant (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 73 |
|---|---|
| Services billed | 395 across 22 procedure codes |
| Paid by Medicare | $8,888 |
Part D prescriptions in 2024
| Prescriptions (claims) | 354 · 363 30-day fills |
|---|---|
| Patients | 157 |
| Total drug cost | $44,275 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Louisiana Dermatology Associates, LLCBaton Rouge, LA · 10 clinicians
Industry payments (Open Payments)
- 2025$1,623 · 76 payments from 16 companies
- 2024$1,020 · 50 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Galderma Laboratories, L.P. | $239.86 | 17 |
| Regeneron Healthcare Solutions, Inc. | $235.53 | 7 |
| Ucb, Inc. | $209.25 | 10 |
| Janssen Biotech, Inc. | $180.92 | 6 |
| Genzyme Corporation | $159.84 | 10 |
What the 2025 payments were for
- Food and Beverage$1,336 · 72 payments
- Education$286.58 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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