Mark William Sornson, M.D.
NPI 1629189550ActiveIndividual· Dermatology, MOHS-Micrographic Surgery· San Diego, CA
Dermatology, MOHS-Micrographic Surgery (M.D.) in San Diego, California, trained at University of California, San Diego School of Medicine (class of 1998). 412 Medicare patients in 2024, $137,191 paid; nearly all of their 489 Part D prescriptions were generic (95%). Genzyme Corporation was the largest of 16 companies reporting payments in 2025, $1,573 in all, mostly food and beverage.
Overview
| NPI | 1629189550 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Jun 20, 2023 |
| Certified by provider | Jun 20, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology, MOHS-Micrographic Surgery Primary | 207ND0101X | A69605 | CA |
| Dermatology | 207N00000X | A69605 | 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 | 412 |
|---|---|
| Services billed | 2,601 across 61 procedure codes |
| Paid by Medicare | $137,191 |
Part D prescriptions in 2024
| Prescriptions (claims) | 489 · 626 30-day fills |
|---|---|
| Patients | 232 |
| Total drug cost | $137,174 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Dermatology |
| Telehealth | Offers telehealth |
Medical group
- Sharp Rees-Stealy Medical Group IncSan Diego, CA · 884 clinicians
Industry payments (Open Payments)
- 2025$1,573 · 57 payments from 16 companies
- 2024$1,036 · 40 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $388.83 | 10 |
| Sun Pharmaceutical Industries Inc. | $204.46 | 6 |
| Incyte Corporation | $168.18 | 6 |
| Leo Pharma Inc. | $132.32 | 5 |
| Ucb, Inc. | $108.39 | 4 |
What the 2025 payments were for
- Food and Beverage$1,573 · 57 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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