Doctor profile · Federal record
Dr. Louis Chang, M.D., PH.D.
Ophthalmology Physician (CMS: Ophthalmology) · Los Angeles, CA
- NPI 1538295720
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
100 Stein Plz
Los Angeles, CA 900957065
(310) 473-8878 - Mailing address
-
1655 Greenfield Ave, #23
Los Angeles, CA 900253549
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- California #A91494
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538295720. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
14,804
Distinct HCPCS
10
Medicare allowed
$2,835,784
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J2777 |
Injection, faricimab-svoa, 0.1 mg | 6,240 | 23 | $36 | |
J0178 |
Injection, aflibercept, 1 mg | 2,075 | 182 | $867 | |
92134 |
Imaging of retina | 2,038 | 530 | $51 | |
67028 |
Injection of drug into eye | 1,293 | 230 | $149 | |
J2778 |
Injection, ranibizumab, 0.1 mg | 1,235 | 43 | $226 | |
92012 |
Established patient problem focused exam of visual system | 1,026 | 383 | $115 | |
92014 |
Established patient complete exam of visual system | 225 | 225 | $161 | |
92004 |
New patient complete exam of visual system | 113 | 113 | $190 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 110 | 95 | $110 | |
92235 |
Exam of retinal blood vessels using a special camera after injection of a dye | 89 | 78 | $183 |
In context: peer comparison
Among 92 peers in Los Angeles Ophthalmology Physician, average services per provider: 277. This provider delivers 53× the peer median.Open Payments
Industry payments received
All-time total
$89
Transactions
3
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Genentech USA, INC. | 1 | $30.09 | |
| Astellas Pharma US INC | 1 | $29.98 | |
| Apellis Pharmaceuticals, INC. | 1 | $28.78 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
119
Patients
37
Total drug cost
$2,616
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ketorolac Tromethamine | Generic | 44 | 0 | $809 |
| Neomycin-Polymyxin-Dexameth (Neomycin/Polymyxin B/Dexametha) | Brand | 33 | 19 | $530 |
| Prednisolone Acetate | Generic | 30 | 18 | $1,160 |
| Brimonidine Tartrate | Generic | 12 | 0 | $117 |
Hospital affiliations
Frequently asked questions
What is Dr. Louis Chang's medical specialty?
Dr. Louis Chang practices Ophthalmology Physician in Los Angeles, CA.
Where does Dr. Louis Chang practice?
Dr. Louis Chang practices at 100 Stein Plz, Los Angeles, CA 900957065. Office phone: 3104738878.
What is Dr. Louis Chang's NPI?
Dr. Louis Chang's National Provider Identifier (NPI) is 1538295720, issued by NPPES.
Does Dr. Louis Chang accept Medicare assignment?
Yes. Dr. Louis Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Louis Chang commonly perform?
Top Medicare-reported procedures in 2023: Injection, faricimab-svoa, 0.1 mg (HCPCS J2777); Injection, aflibercept, 1 mg (HCPCS J0178); Imaging of retina (HCPCS 92134). Source: CMS Medicare Physician & Other Practitioners file.