Provider Profile
Sylvia L. Chang
Unclaimed ProfileAbout Sylvia Chang
Based in Rancho Cucamonga, CA, Sylvia L. Chang is listed in the NPI registry under ophthalmology. Sylvia graduated from Wright State University Boonshoft School of Medicine in 2017. According to Medicare claims data, Sylvia cared for 75 Medicare patients across 79 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, 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.
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
- (909) 440-1014
- Email not available
Practice Locations
9170 HAVEN AVE STE 102
Rancho Cucamonga, CA 91730
150 S Grand Ave Ste J
Glendora, CA 91741
207 S Santa Anita St Ste P25
San Gabriel, CA 91776
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
79 services · 75 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Imaging of optic nerve | Treatment | 92133 |
12 | Less often than most peers in Ophthalmology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
37 | 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 |
30 | Less often than most 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.
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.
Other eye doctors in Rancho Cucamonga 5
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Wright State University Boonshoft School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Wright State University Boonshoft School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Imaging of optic nerve 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Sylvia L. Chang?
Sylvia L. Chang is an eye doctor in Rancho Cucamonga, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Sylvia L. Chang's address?
Sylvia L. Chang is listed at 9170 Haven Ave Ste 102, Rancho Cucamonga, CA 91730. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Sylvia L. Chang?
The number on file is (909) 440-1014. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Sylvia L. Chang's NPI number?
Sylvia L. Chang's National Provider Identifier is 1053843458. 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 Sylvia L. Chang train?
Sylvia L. Chang attended Wright State University Boonshoft School of Medicine, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Sylvia L. Chang been practicing?
Sylvia L. Chang has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Sylvia L. Chang perform?
According to Medicare billing data, Sylvia L. Chang provides treatments such as 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
Has Sylvia L. Chang confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Sylvia L. Chang. 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.