Provider Profile
Saya Hayashi, OD
Unclaimed ProfileAbout Dr. Hayashi
Saya Hayashi, OD is an optometrist based in Berkeley, CA. Saya is a 2022 graduate of Southern California College of Optometry. Medicare claims data shows Saya provided 25 services to 25 patients. The services billed most often include new patient complete exam of visual system and established patient complete exam of visual system.
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
- (510) 642-2020
- Email not available
Practice Locations
200 MINOR HALL
Berkeley, CA 94720
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
Cornea conditions
Corneal issues
Eye conditions
Eye discomfort
Eye diseases
Eye infections
Eye inflammation
Eye injuries
- Corneal abrasion
- Foreign Object in Eye
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
- Emergency Eye Care
- Foreign Object Removal from Eye
Vision correction
Procedures Most Often Billed to Medicare
25 services · 25 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| New patient complete exam of visual system | Treatment | 92004 |
14 | Less often than most peers in Optometrist |
| Established patient complete exam of visual system | Treatment | 92014 |
11 | Less often than most peers in Optometrist |
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 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Other optometrists in Berkeley 7
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 2022 at Southern California College of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs New patient complete exam of visual system 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Hayashi specialize in?
Dr. Hayashi is an optometrist in Berkeley, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Hayashi located?
Dr. Hayashi is listed at 200 Minor Hall, Berkeley, CA 94720. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Hayashi's phone number?
The number on file is (510) 642-2020. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Hayashi?
Dr. Hayashi's National Provider Identifier is 1487378329. 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 Dr. Hayashi go to medical school?
Dr. Hayashi attended Southern California College of Optometry, graduating in 2022. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Hayashi have?
Dr. Hayashi has 4 years experience. Calculated from a graduation year of 2022, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Hayashi do most often?
According to Medicare billing data, Dr. Hayashi provides treatments such as new patient complete exam of visual system and established patient complete exam of visual system. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Hayashi's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hayashi. 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.