Mark A. Gallardo, MD
NPI 1336159607ActiveIndividual· Dermatology· Hattiesburg, MS
Dermatology (MD) in Hattiesburg, Mississippi, trained at Louisiana State University School of Medicine in New Orleans (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $1,592,700 for 2,243 claims, against $459,839 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 18 companies reporting payments in 2025, $1,581 in all, mostly food and beverage.
Overview
| NPI | 1336159607 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 9, 2006 |
| Last updated in NPPES | Jul 14, 2020 |
| Certified by provider | Jul 14, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 17102 | MS |
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 (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,753 |
|---|---|
| Services billed | 31,850 across 73 procedure codes |
| Paid by Medicare | $459,839 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,243 · 2,502 30-day fills |
|---|---|
| Patients | 854 |
| Total drug cost | $1,592,700 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in New Orleans |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Dermatology |
Medical group
- Hattiesburg Clinic PAHattiesburg, MS · 537 clinicians
Industry payments (Open Payments)
- 2025$1,581 · 105 payments from 18 companies
- 2024$1,322 · 70 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $334.29 | 28 |
| Galderma Laboratories, L.P. | $180.97 | 14 |
| Abbvie Inc. | $165.28 | 18 |
| Genzyme Corporation | $164.16 | 7 |
| Leo Pharma Inc. | $158.18 | 7 |
What the 2025 payments were for
- Food and Beverage$1,509 · 104 payments
- Education$72.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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