John Gambrill Jr., MD
NPI 1710033022ActiveIndividual· Ophthalmology· Catonsville, MD
Ophthalmology (MD) in Catonsville, Maryland, licensed in MD, with an NPI issued in January 2007. Their prescriptions cost Medicare Part D more than their services did: $48,987 for 398 claims, against $4,139 paid for services in 2024.
Overview
| NPI | 1710033022 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jan 27, 2007 |
| Last updated in NPPES | Mar 19, 2024 |
| Certified by provider | Mar 19, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | D15995 | 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 - Ophthalmology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 33 |
|---|---|
| Services billed | 34 across 3 procedure codes |
| Paid by Medicare | $4,139 |
Part D prescriptions in 2024
| Prescriptions (claims) | 398 · 948 30-day fills |
|---|---|
| Patients | 142 |
| Total drug cost | $48,987 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 1972 |
|---|---|
| Medicare specialty | Ophthalmology |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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