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Edit this profileAt a glance
- 28375 Davis Pkwy, Suite 905, Warrenville, IL 60555
About Dr. Choi
John C. Choi, M.D. practices ophthalmology in Warrenville, IL. John is a 1990 graduate of Harvard Medical School. According to Medicare claims data, John cared for 950 Medicare patients across 1,592 services. The services billed most often include injection, onabotulinumtoxina, 1 unit, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1699765230.
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
- (630) 836-1616
- Email not available
Practice Locations
28375 DAVIS PKWY SUITE 905
Warrenville, IL 60555
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
Eye injury and cancer
- Chemical injury to the eye
- Foreign body in the eye
- Hyphema
- Open-globe eye injury
Inflammation, neurologic, and orbit
- Optic neuritis
- Optic neuropathy
- Orbital cellulitis
- Thyroid eye disease
- Uveitis
Most searched conditions
- Cataracts
- Diabetic retinopathy
- Dry eye
- Glaucoma
- Macular degeneration
Cornea and external eye
- Blepharitis
- Corneal abrasion
- Corneal ulcer
- Keratoconus
- Pink eye
- Pterygium
Eyelid and tear drainage
- Blocked tear duct
- Chalazion
- Drooping eyelid
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
- Epiretinal membrane
- Retinal detachment
Eye injuries
- Foreign Object in Eye
Retina & vitreous
- Eye Floaters and Flashes
Procedures & services
Cataract and lens
- Cataract surgery with lens implant
- Laser-assisted cataract surgery
- Intraocular lens exchange
- YAG laser capsulotomy
Cornea and refractive
- Endothelial corneal transplant
Emergency and minor
- Corneal rust-ring removal
- Removal of an eye foreign body
- Repair of an eye or eyelid laceration
- Repair of ruptured globe
Examination and imaging
- Eye ultrasound
- Slit-lamp examination
- Visual-field testing
- Corneal topography
- Fluorescein angiography
Eyelid, tear duct, and muscle
- Chalazion removal
- Ectropion repair
- Eyelid surgery
- Tear-duct probing
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Tear-duct bypass surgery
Glaucoma
- Cyclophotocoagulation
- Trabeculectomy
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Retina
- Macular hole surgery
- Pneumatic retinopexy
- Retinal laser treatment
- Scleral buckle surgery
- Vitrectomy
Most searched procedures
- Cataract surgery
- Eye exam
- LASIK
- Retina surgery
Corneal procedures
- Amniotic Membrane Eye Graft
Eye diagnostics
- Optical Coherence Tomography Scan
Eye injuries
- Eye Scratch Laceration Repair
- Foreign Object Removal from Eye
Eyelid surgery
- Stye Removal
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
1,592 services · 950 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Probing of nasal tear duct | Procedure | 68840 |
131 | More than most peers in Ophthalmology |
| Closure of tear duct opening using plug | Procedure | 68761 |
105 | More often than most peers in Ophthalmology |
| Removal of eyelashes using forceps | Procedure | 67820 |
32 | More often than most peers in Ophthalmology |
| Injection of chemical for paralysis of nerve muscles on side of face | Procedure | 64612 |
30 | Less often than most peers in Ophthalmology |
| Removal of growth of eyelid | Procedure | 67840 |
23 | As often as other peers in Ophthalmology |
| Repair tear duct opening by heat, tying, or laser surgery | Procedure | 68760 |
15 | Less often than most peers in Ophthalmology |
| Photography of content of eyes | Treatment | 92285 |
135 | More often than most peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
109 | As often as other peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
95 | As often as other peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
44 | 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.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
Trained at Harvard Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1990 at Harvard Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Probing of nasal tear duct 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is John C. Choi's specialty?
John C. Choi is an eye doctor in Warrenville, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where can I find John C. Choi?
John C. Choi is listed at 28375 Davis Pkwy Suite 905, Warrenville, IL 60555. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact John C. Choi?
The number on file is (630) 836-1616. Contact the office directly to confirm availability and scheduling.
NPI registry
What is John C. Choi's NPI number?
John C. Choi's National Provider Identifier is 1699765230. 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
What is John C. Choi's education?
John C. Choi attended Harvard Medical School, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has John C. Choi been practicing?
John C. Choi has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What is John C. Choi known for?
According to Medicare billing data, John C. Choi performs procedures including probing of nasal tear duct, closure of tear duct opening using plug and removal of eyelashes using forceps; provides treatments such as photography of content of eyes and photography of the retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has John C. Choi confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John C. Choi. If this is you, claiming it is free.
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