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Edit this profileAt a glance
- 1085 W El Camino Real, Sunnyvale, CA 94087
About Dr. Chang
Aileen Chang, O.D. is an optometrist practicing in Sunnyvale, CA. Aileen trained at Southern California College of Optometry, graduating in 2013. Medicare claims data shows Aileen provided 765 services to 716 patients. The services billed most often include established patient complete exam of visual system, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and imaging of optic nerve. This provider record is associated with NPI 1356781785.
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
- (408) 524-5900
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1085 W EL CAMINO REAL
Sunnyvale, CA 94087
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
765 services · 716 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
19 | As often as other peers in Optometrist |
| Established patient complete exam of visual system | Treatment | 92014 |
173 | More often than most peers in Optometrist |
| Imaging of optic nerve | Treatment | 92133 |
127 | More often than most peers in Optometrist |
| Exam of visual field with extended testing | Treatment | 92083 |
91 | More often than most peers in Optometrist |
| New patient complete exam of visual system | Treatment | 92004 |
34 | As often as other peers in Optometrist |
| Imaging of retina with remote review by physician | Treatment | 92228 |
26 | As often as other peers in Optometrist |
| Imaging of retina | Treatment | 92134 |
17 | Less often than most peers in Optometrist |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
160 | More often than most peers in Optometrist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
60 | As often as other peers in Optometrist |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
30 | More 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 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
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 — 32 related providers in 4 groups
Other optometrists in Sunnyvale 8
Same specialty, same city.
Trained at Southern California College of Optometry 8
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Southern California College of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound scan of cornea to determine thickness 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Aileen Chang's specialty?
Aileen Chang is an optometrist in Sunnyvale, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Aileen Chang?
Aileen Chang is listed at 1085 W El Camino Real, Sunnyvale, CA 94087. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Aileen Chang?
The number on file is (408) 524-5900. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Aileen Chang?
Aileen Chang's National Provider Identifier is 1356781785. 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 Aileen Chang's education?
Aileen Chang attended Southern California College of Optometry, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Aileen Chang have?
Aileen Chang has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What is Aileen Chang known for?
According to Medicare billing data, Aileen Chang performs imaging including ultrasound scan of cornea to determine thickness; provides treatments such as established patient complete exam of visual system and imaging of optic nerve, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Aileen Chang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Aileen Chang. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.