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Edit this profileAt a glance
- 715 Maiden Choice Ln, Catonsville, MD 21228
About Dr. Gambrill
John Gambrill, MD practices ophthalmology in Catonsville, MD. According to Medicare claims data, the services billed most often include new patient complete exam of visual system. The provider's National Provider Identifier (NPI) is 1710033022.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (410) 247-5602
- Email not available
Practice Locations
715 MAIDEN CHOICE LN
Catonsville, MD 21228
Conditions Commonly Evaluated or Treated
Within Ophthalmology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Cornea and external eye
Eyelid and tear drainage
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
- Epiretinal membrane
- Retinal detachment
Eye injuries
Inflammation, neurologic, and orbit
- Thyroid eye disease
- Uveitis
Retina & vitreous
Procedures & services
Most searched procedures
- Cataract surgery
- Eye exam
- LASIK
- Retina surgery
Examination and imaging
- Corneal topography
- Fluorescein angiography
Cataract and lens
- Intraocular lens exchange
- YAG laser capsulotomy
Corneal procedures
- Amniotic Membrane Eye Graft
Eye diagnostics
Eye injuries
- Eye Scratch Laceration Repair
- Foreign Object Removal from Eye
Eyelid surgery
Eyelid, tear duct, and muscle
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Eyelid surgery
- Tear-duct bypass surgery
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Laser eye surgery
- Laser Floater Removal
Laser procedures
- Laser Treatment for Retinal Tear
Laser vision correction
- SMILE Eye Surgery
Refractive surgery
- Clear Lens Exchange
- Implantable Contact Lenses
Tear duct & Orbit
- Orbital Decompression Surgery
- Tear Duct Plugs
Procedures Most Often Billed to Medicare
23 services · 23 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| New patient complete exam of visual system | Treatment | 92004 |
23 | Less often than most peers in Ophthalmology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other eye doctors in Catonsville 4
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1972 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs New patient complete exam of visual system 8
Providers in MD who bill this service to Medicare most often.
Common questions
What does Dr. Gambrill specialize in?
Dr. Gambrill is an eye doctor in Catonsville, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Dr. Gambrill located?
Dr. Gambrill is listed at 715 Maiden Choice Ln, Catonsville, MD 21228. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Gambrill's phone number?
The number on file is (410) 247-5602. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Gambrill's NPI number?
Dr. Gambrill's National Provider Identifier is 1710033022. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Gambrill go to medical school?
Dr. Gambrill attended Other, graduating in 1972. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Gambrill been practicing?
Dr. Gambrill has 54 years experience. Calculated from a graduation year of 1972, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Gambrill do most often?
According to Medicare billing data, Dr. Gambrill provides treatments such as new patient complete exam of visual system. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Gambrill confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gambrill. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.