Charles Williams Flexner, M.D.
NPI 1972546828ActiveIndividual· Internal Medicine· Baltimore, MD
Internal Medicine (M.D.) in Baltimore, Maryland, licensed in MD, with an NPI issued in June 2006. Merck Sharp & Dohme LLC was the largest of 3 companies reporting payments in 2025, $21,624 in all, mostly consulting fees.
Overview
| NPI | 1972546828 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Jun 7, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | D32845 | MD |
| Internal Medicine, Infectious Disease | 207RI0200X | D32845 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Industry payments (Open Payments)
- 2025$21,624 · 29 payments from 3 companies
- 2024$5,470 · 7 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $11,001 | 14 |
| Gilead Sciences, Inc. | $7,622 | 14 |
| Theratechnologies Inc. | $3,000 | 1 |
What the 2025 payments were for
- Consulting Fee$15,230 · 2 payments
- Honoraria$3,000 · 1 payment
- Travel and Lodging$2,254 · 11 payments
- Food and Beverage$1,139 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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