Provider Profile
Alex Onishi
Unclaimed ProfileAbout 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.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
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
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
Inflammation, neurologic, and orbit
- Thyroid eye disease
- Uveitis
Retina & vitreous
- Eye Floaters and Flashes
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
- Optical Coherence Tomography Scan
Eye injuries
- Eye Scratch Laceration Repair
- Foreign Object Removal from Eye
Eyelid surgery
- Stye Removal
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
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. Guide.md cannot book appointments or pass on messages — please call the office directly.
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
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.