Mark S. Johnson, M.D.
NPI 1659462190ActiveIndividual· Family Medicine· Washington, DC
Family Medicine (M.D.) in Washington, District of Columbia, trained at Rutgers New Jersey Medical School (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $4,000 for 108 claims, against $2,281 paid for services in 2024. Novo Nordisk Inc was the largest of 2 companies reporting payments in 2025, $12,205 in all, mostly consulting fees.
Overview
| NPI | 1659462190 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 28, 2006 |
| Last updated in NPPES | Nov 8, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 25MA05722100 | NJ |
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 - Family Practice (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 23 |
|---|---|
| Services billed | 34 across 11 procedure codes |
| Paid by Medicare | $2,281 |
Part D prescriptions in 2024
| Prescriptions (claims) | 108 · 129 30-day fills |
|---|---|
| Patients | 15 |
| Total drug cost | $4,000 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Rutgers New Jersey Medical School |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Howard UniversityWashington, DC · 181 clinicians
Hospital affiliation
- Howard University Hospital CorpWashington, DC
Industry payments (Open Payments)
- 2025$12,205 · 2 payments from 2 companies
- 2024$21,094 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $12,090 | 1 |
| Gilead Sciences, Inc. | $114.91 | 1 |
What the 2025 payments were for
- Consulting Fee$12,090 · 1 payment
- Food and Beverage$114.91 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 396 family medicine physicians in Washington · All family medicine physicians in District of Columbia