Quick answers
- Where does John Gambrill Jr. see patients?
- Medicare's clinician data lists 1 practice location in Catonsville, MD. Call before your visit to confirm the address.
- What is John Gambrill Jr.'s specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does John Gambrill Jr. accept Medicare assignment?
- Medicare's clinician data says John Gambrill Jr. may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for John Gambrill Jr.?
- (410) 247-5602, as listed in official Medicare / NPI Registry data.
- What is John Gambrill Jr.'s NPI number?
- 1710033022. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John Gambrill Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 715 Maiden Choice LnCatonsville, MD 21228 (410) 247‑5602
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1972 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1710033022 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians