John Ian McNeil, M.D.
NPI 1407828254ActiveIndividual· Internal Medicine, Infectious Disease· Silver Spring, MD
Internal Medicine, Infectious Disease (M.D.) in Silver Spring, Maryland, trained at Howard University College of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $1,323,493 for 3,454 claims, against $216,938 paid for services in 2024. Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2025, $117.04 in all, mostly food and beverage.
Overview
| NPI | 1407828254 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 6, 2006 |
| Last updated in NPPES | Sep 30, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | D0046584 | 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 - Internal Medicine (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 857 |
|---|---|
| Services billed | 2,847 across 25 procedure codes |
| Paid by Medicare | $216,938 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,454 · 6,834 30-day fills |
|---|---|
| Patients | 470 |
| Total drug cost | $1,323,493 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Infectious Disease |
Medical group
- Maximed Associates Inc.Silver Spring, MD · 3 clinicians
Hospital affiliation
- Medstar Montgomery Medical CenterOlney, MD
Industry payments (Open Payments)
- 2025$117.04 · 7 payments from 2 companies
- 2024$374.65 · 26 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $64.50 | 4 |
| Merck Sharp & Dohme LLC | $52.54 | 3 |
What the 2025 payments were for
- Food and Beverage$117.04 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 32 infectious disease specialists in Silver Spring · All infectious disease specialists in Maryland