Crystal Nwannunu, MD
NPI 1669092045ActiveIndividual· Dermatology· Rockwall, TX
Dermatology (MD) in Rockwall, Texas, trained at University of Texas Medical School at Houston (class of 2022). 59 Medicare patients in 2024, $11,277 paid; nearly all of their 59 Part D prescriptions were generic (97%). Ucb, Inc. was the largest of 18 companies reporting payments in 2025, $3,945 in all, mostly food and beverage.
Overview
| NPI | 1669092045 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 25, 2020 |
| Last updated in NPPES | Sep 28, 2026 |
| Certified by provider | Sep 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | W4169 | 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 (DC); Practitioner - Dermatology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 59 |
|---|---|
| Services billed | 161 across 16 procedure codes |
| Paid by Medicare | $11,277 |
Part D prescriptions in 2024
| Prescriptions (claims) | 59 · 68 30-day fills |
|---|---|
| Patients | 35 |
| Total drug cost | $2,170 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 2022 |
| Medicare specialty | Dermatology |
Medical group
- Clinical Dermatology Center LLCChantilly, VA · 7 clinicians
Industry payments (Open Payments)
- 2025$3,945 · 159 payments from 18 companies
- 2024$1,650 · 28 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ucb, Inc. | $570.33 | 14 |
| Leo Pharma Inc. | $524.48 | 28 |
| Galderma Laboratories, L.P. | $523.69 | 51 |
| Janssen Biotech, Inc. | $454.16 | 18 |
| Incyte Corporation | $425.64 | 9 |
What the 2025 payments were for
- Food and Beverage$3,860 · 158 payments
- Education$84.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Dermatology providers in Rockwall
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