Provider Profile
John Y. Wong, O.D.
Unclaimed ProfileAbout Dr. Wong
Listed in the NPI registry as an optometrist, John Y. Wong, O.D. practices in Castro Valley, CA. John graduated from Southern California College of Optometry in 2005. Medicare claims data shows John provided 73 services to 71 patients. The services billed most often include established patient complete exam of visual system and photography of the retina.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (510) 881-4401
- Email not available
Practice Locations
20211 PATIO DR SUITE 100
Castro Valley, CA 94546
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
- Astigmatism
- Dry eye
- Nearsightedness
- Pink eye
- Presbyopia
Contact lens issues
- Contact Lens Intolerance
Cornea conditions
- Keratoconus
- Pterygium
Corneal issues
- Corneal Neovascularization
- Eye Sunburn
Eye conditions
- Broken Blood Vessel in Eye
Eye discomfort
- Burning Eyes
- Discharge from Eye
- Red Eyes
Eye diseases
- Cataracts
- Diabetic retinopathy
- Glaucoma
- Macular degeneration
- Retinal Tear Symptoms
Eye infections
- Corneal ulcer
Eye inflammation
- Iritis
Eye injuries
- Corneal abrasion
- Foreign Object in Eye
Eye irritation
- Eye Allergies
- Eye Pain
- Watery Eyes
Eye surface issues
- Yellow Bump on Eye
Eyelid conditions
- Blepharitis
- Drooping eyelid
- Eye Twitching
- Stye
Eyelid issues
- Chalazion
- Ectropion
- Entropion
- Eyelash Lice or Dandruff
Pediatric eye conditions
- Eye misalignment (strabismus)
- Lazy eye (amblyopia)
Pupil issues
- Unequal Pupil Sizes
Tear duct issues
- Blocked tear duct
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 fitting
- Dry eye treatment
- Eye exam
- Glasses prescription
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
- Autologous Serum Eye Drops Fitting
- IPL for Dry Eye
- LipiFlow Treatment
- Meibomian Gland Expression
Examinations
- Comprehensive medical eye examination
- Diabetic Eye Exam
- DMV Vision Test
- Low Vision Assessment
- Pediatric Eye Exam
Eyelid care
- Eyelid Deep Cleaning
Eyelid treatments
- Stye Removal
General exams
- School Vision Screening Follow-Up
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
- Optical Coherence Tomography Scan
Minor procedures
- Amniotic Membrane Placement
- Tear Duct Plugs
Specialty lenses
- Ortho-K
- RGP Contact Lens Fitting
- Scleral Lens Fitting
Surgical evaluations
- Cataract Evaluation
- Corneal Cross-Linking Evaluation
- LASIK Consultation
- PRK Evaluation
Tear duct procedures
- Flushing of Tear Ducts
Therapy
- Sports Vision Training
- Vision Therapy
Urgent care
- Emergency Eye Care
- Foreign Object Removal from Eye
Vision correction
- Myopia Management
Procedures Most Often Billed to Medicare
73 services · 71 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient complete exam of visual system | Treatment | 92014 |
37 |
| Photography of the retina | Treatment | 92250 |
36 |
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 optometrists at this location 3
Same specialty, same street address — most likely the same department or group.
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 optometrists in Castro Valley 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Southern California College of Optometry 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Southern California College of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs Established patient complete exam of visual system 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is John Y. Wong?
John Y. Wong is an optometrist in Castro Valley, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is John Y. Wong's address?
John Y. Wong is listed at 20211 Patio Dr Suite 100, Castro Valley, CA 94546. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with John Y. Wong?
The number on file is (510) 881-4401. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for John Y. Wong?
John Y. Wong's National Provider Identifier is 1457371619. 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 John Y. Wong train?
John Y. Wong attended Southern California College of Optometry, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John Y. Wong have?
John Y. Wong has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What procedures does John Y. Wong perform?
According to Medicare billing data, John Y. Wong provides treatments such as established patient complete exam of visual system and photography of the retina. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John Y. Wong's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John Y. Wong. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.