Margaret Litwin Sommerville, M.D.
NPI 1861671505ActiveIndividual· Dermatology· Chevy Chase, MD
Dermatology (M.D.) in Chevy Chase, Maryland, trained at George Washington University School of Medicine (class of 1991). 97 Medicare patients in 2024, $28,598 paid; nearly all of their 81 Part D prescriptions were generic (98%).
Overview
| NPI | 1861671505 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 30, 2007 |
| Last updated in NPPES | Aug 10, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | D0061245 | MD |
| Dermatology, Procedural Dermatology | 207NS0135X | D0061245 | MD |
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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 97 |
|---|---|
| Services billed | 580 across 21 procedure codes |
| Paid by Medicare | $28,598 |
Part D prescriptions in 2024
| Prescriptions (claims) | 81 · 87 30-day fills |
|---|---|
| Patients | 38 |
| Total drug cost | $1,535 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Dermatology |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other dermatologists in Chevy Chase
- 1104835354
- 1255785101
- 1265691398
- 1316142227
- 1356500011
- 1386070118
- 1497747760
- 1518028257
- 1558537720
- 1659578581
- 1689866733
- 1699750315
All 36 dermatologists in Chevy Chase · All dermatologists in Maryland