Mark David Thieberg, M.D.
NPI 1477669992ActiveIndividual· Dermatology· Plano, TX
Dermatology (M.D.) in Plano, Texas, trained at Icahn School of Medicine at Mount Sinai (class of 1990). 1,530 Medicare patients in 2024, $274,721 paid; nearly all of their 1,868 Part D prescriptions were generic (98%). Incyte Corporation was the largest of 2 companies reporting payments in 2025, $280.08 in all, mostly food and beverage.
Overview
| NPI | 1477669992 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 21, 2006 |
| Last updated in NPPES | Dec 15, 2022 |
| Certified by provider | Dec 15, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | J7227 | TX |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,530 |
|---|---|
| Services billed | 8,829 across 51 procedure codes |
| Paid by Medicare | $274,721 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,868 · 2,263 30-day fills |
|---|---|
| Patients | 708 |
| Total drug cost | $172,632 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Dermatology |
Medical group
- Healthtexas Provider NetworkWaxahachie, TX · 2,697 clinicians
Industry payments (Open Payments)
- 2025$280.08 · 2 payments from 2 companies
- 2024$264.56 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Incyte Corporation | $155.68 | 1 |
| Galderma Laboratories, L.P. | $124.40 | 1 |
What the 2025 payments were for
- Food and Beverage$280.08 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 48 dermatologists in Plano · All dermatologists in Texas