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Edit this profileAt a glance
- 4002 Wyndwood Dr, Crystal Lake, IL 60014
About Dr. O'neill
John J. O'Neill, O.D. practices optometry in Crystal Lake, IL. John is also listed as specializing in optometrist. Medicare claims data shows John provided 45 services to 44 patients. The services billed most often include photography of the retina, new patient complete exam of visual system, and established patient complete exam of visual system. The provider's National Provider Identifier (NPI) is 1356503403.
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
- (815) 245-2560
- Email not available
Practice Locations
4002 WYNDWOOD DR
Crystal Lake, IL 60014
Conditions Commonly Evaluated or Treated
Within Optometry 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
Contact lens issues
Cornea conditions
Corneal issues
Eye conditions
Eye discomfort
Eye diseases
Eye infections
Eye inflammation
Eye injuries
Eye irritation
Eye surface issues
Eyelid conditions
Eyelid issues
Pediatric eye conditions
Pupil issues
Tear duct issues
Vision changes
- Blurry Vision
- Color Blindness
- Distorted Vision
- Double Vision
- Eye Floaters and Flashes
- Eye Strain
- Farsightedness
- Halos Around Lights
- Light Sensitivity
- Night Blindness
- Posterior vitreous detachment
- Tunnel Vision
- Visual Migraines
Procedures & services
Most searched procedures
Contact lens exams
- Bifocal or Multifocal Contact Lens Fitting
- Contact Lens Training
- Plano (Non-Prescription) Colored Contact Lens Exam
- Toric Contact Lens Fitting
Dry eye treatments
Examinations
- Comprehensive medical eye examination
- Diabetic Eye Exam
- DMV Vision Test
- Low Vision Assessment
- Pediatric Eye Exam
Eyelid care
Eyelid treatments
General exams
Glasses and eyewear
- Blue Light Glasses Consultation
- Eyeglass Frame Adjustment and Repair
- Prescription Sunglasses Consultation
- Prism Eyeglasses Fitting
Imaging & tests
- Color Vision Testing
- Corneal topography
- Coronary optical coherence tomography
- Eye-pressure measurement
- Pachymetry
- Retinal photography
- Visual Field Test
Imaging and scans
Minor procedures
Specialty lenses
Surgical evaluations
Tear duct procedures
Therapy
Urgent care
Vision correction
Procedures Most Often Billed to Medicare
45 services · 44 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Photography of the retina | Treatment | 92250 |
17 | Less often than most peers in Optometry |
| New patient complete exam of visual system | Treatment | 92004 |
16 | Less often than most peers in Optometry |
| Established patient complete exam of visual system | Treatment | 92014 |
12 | Less often than most peers in Optometry |
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.
Other optometry specialists in Crystal Lake 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at Other 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Photography of the retina 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is John J. O'Neill's specialty?
John J. O'Neill is an optometry in Crystal Lake, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find John J. O'Neill?
John J. O'Neill is listed at 4002 Wyndwood Dr, Crystal Lake, IL 60014. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact John J. O'Neill?
The number on file is (815) 245-2560. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John J. O'Neill?
John J. O'Neill's National Provider Identifier is 1356503403. 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 J. O'Neill's education?
John J. O'Neill attended Other, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John J. O'Neill have?
John J. O'Neill has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What is John J. O'Neill known for?
According to Medicare billing data, John J. O'Neill provides treatments such as photography of the retina and new patient complete exam of visual system. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John J. O'Neill's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John J. O'Neill. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.