Physician Profile
Louis K. Chang, M.D., PhD
Unclaimed ProfileAbout Dr. Chang
Based in Los Angeles, CA, Louis K. Chang, M.D., PhD is listed in the NPI registry under ophthalmology. Louis graduated from University of Washington School of Medicine in 2003. According to Medicare claims data, Louis cared for 2,497 Medicare patients across 23,553 services. The services billed most often include injection, faricimab-svoa, 0.1 mg, imaging of retina, and injection, aflibercept, 1 mg.
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
- (310) 473-8878
- Email not available
Practice Locations
100 STEIN PLZ
Los Angeles, CA 90095
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
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
Inflammation, neurologic, and orbit
Retina & vitreous
Procedures & services
Most searched procedures
Examination and imaging
Cataract and lens
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Eyelid, tear duct, and muscle
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
23,553 services · 2,497 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug into eye | Procedure | 67028 |
1,315 | More often than most peers in Ophthalmology |
| 2d ultrasound scan of eye tissue and structures | Imaging | 76512 |
43 | More often than most peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
2,238 | More than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
316 | As often as other peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
299 | More often than most peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
94 | More often than most peers in Ophthalmology |
| Exam of retinal blood vessels using a special camera after injection of a dye | Treatment | 92235 |
92 | More often than most peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
90 | As often as other peers in Ophthalmology |
| Extended exam of the back part of the eye with retinal drawing | Treatment | 92201 |
15 | Less often than most peers in Ophthalmology |
| Injection, faricimab-svoa, 0.1 mg | Drug given | J2777 |
14,820 | 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 8
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 2
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 Los Angeles 8
Same specialty, same city.
Trained at University of Washington School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2003 at University of Washington School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug into eye 7
Providers in CA who bill this service to Medicare most often.
Common questions
What is Louis K. Chang, M.D.'s specialty?
Louis K. Chang, M.D. is an eye doctor in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where can I find Louis K. Chang, M.D.?
Louis K. Chang, M.D. is listed at 100 Stein Plz, Los Angeles, CA 90095. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Louis K. Chang, M.D.?
The number on file is (310) 473-8878. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Louis K. Chang, M.D.'s NPI number?
Louis K. Chang, M.D.'s National Provider Identifier is 1538295720. 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 Louis K. Chang, M.D.'s education?
Louis K. Chang, M.D. attended University of Washington School of Medicine, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How long has Louis K. Chang, M.D. been practicing?
Louis K. Chang, M.D. has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What is Louis K. Chang, M.D. known for?
According to Medicare billing data, Louis K. Chang, M.D. performs procedures including injection of drug into eye; reads or performs imaging such as 2d ultrasound scan of eye tissue and structures; provides treatments such as imaging of 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 Louis K. Chang, M.D. confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Louis K. Chang, M.D.. 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.