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Edit this profileAt a glance
- 1850 Sullivan Ave Ste 540, Daly City, CA 94015
About Alex Onishi
Based in Daly City, CA, Alex Onishi is listed in the NPI registry under ophthalmology. Alex graduated from Northwestern University Feinberg Medical School in 2019. According to Medicare claims data, Alex cared for 753 Medicare patients across 803 services. The services billed most often include photography of the retina, established patient complete exam of visual system, and exam of visual field with extended testing. NPI 1710351622 identifies this record in the national registry.
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
- (650) 755-6900
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1850 SULLIVAN AVE STE 540
Daly City, CA 94015
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
Inflammation, neurologic, and orbit
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
Eye injuries
Retina & vitreous
Procedures & services
Cataract and lens
- Cataract surgery with lens implant
- Laser-assisted cataract surgery
- Intraocular lens exchange
- YAG laser capsulotomy
Cornea and refractive
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
Most searched procedures
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
803 services · 753 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
11 | Less often than most peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
162 | More often than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
121 | Less often than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
113 | As often as other peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
105 | As often as other peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
72 | As often as other peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
42 | Less often than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
30 | Less often than most peers in Ophthalmology |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
24 | Less often than most peers in Ophthalmology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
104 | As often as other 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.
Other eye doctors at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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.
More connections — 31 related providers in 4 groups
Other eye doctors in Daly City 7
Same specialty, same city.
Trained at Northwestern University Feinberg Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 2019 at Northwestern University Feinberg Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Alex Onishi specialize in?
Alex Onishi is an eye doctor in Daly City, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Alex Onishi located?
Alex Onishi is listed at 1850 Sullivan Ave Ste 540, Daly City, CA 94015. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Alex Onishi's phone number?
The number on file is (650) 755-6900. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Alex Onishi's NPI number?
Alex Onishi's National Provider Identifier is 1710351622. 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 Alex Onishi train?
Alex Onishi attended Northwestern University Feinberg Medical School, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How long has Alex Onishi been practicing?
Alex Onishi has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What does Alex Onishi do most often?
According to Medicare billing data, Alex Onishi performs procedures including removal of cataract with insertion of prosthetic lens; provides treatments such as photography of the retina and established patient complete exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Alex Onishi confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Alex Onishi. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.