Gregory Philip Henderson, M.D.
NPI 1619109519ActiveIndividual· Dermatology, MOHS-Micrographic Surgery· Newport Beach, CA
Dermatology, MOHS-Micrographic Surgery (M.D.) in Newport Beach, California, trained at University of Southern California Keck School of Medicine (class of 2009). 1,270 Medicare patients in 2024, $1,313,153 paid; nearly all of their 1,057 Part D prescriptions were generic (92%). Janssen Biotech, Inc. was the largest of 10 companies reporting payments in 2025, $512.45 in all, mostly food and beverage.
Overview
| NPI | 1619109519 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 11, 2009 |
| Last updated in NPPES | Jun 18, 2020 |
| Certified by provider | Jun 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology, MOHS-Micrographic Surgery Primary | 207ND0101X | A125261 | CA |
| Dermatology | 207N00000X | A125261 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,270 |
|---|---|
| Services billed | 12,139 across 122 procedure codes |
| Paid by Medicare | $1,313,153 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,057 · 1,194 30-day fills |
|---|---|
| Patients | 422 |
| Total drug cost | $506,612 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Dermatology |
Medical group
- Csi Medical GroupFullerton, CA · 111 clinicians
Industry payments (Open Payments)
- 2025$512.45 · 18 payments from 10 companies
- 2024$1,073 · 42 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $150.08 | 4 |
| Almirall LLC | $55.30 | 2 |
| Lilly USA, LLC | $55.14 | 2 |
| Leo Pharma Inc. | $43.19 | 2 |
| Abbvie Inc. | $41.18 | 2 |
What the 2025 payments were for
- Food and Beverage$413.45 · 17 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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