Doctor profile · Federal record
Dr. Andrew Chang, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · Northridge, CA
- NPI 1003808494
- Accepts Medicare
- MIPS 7.5 / 100 · 2023
- 40 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
18350 Roscoe Blvd, Suite 101
Northridge, CA 913254109
(818) 349-8300
fax (818) 349-2214
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- April 25, 2008
- Year of graduation
- 1986 — 40 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- California #G61183
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003808494. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,553
Distinct HCPCS
10
Medicare allowed
$216,525
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92014 |
Established patient complete exam of visual system | 572 | 489 | $132 | |
92012 |
Established patient problem focused exam of visual system | 181 | 108 | $97 | |
92134 |
Imaging of retina | 179 | 162 | $45 | |
92004 |
New patient complete exam of visual system | 161 | 161 | $156 | |
92136 |
Measurement of corneal curvature and depth of eye | 150 | 77 | $51 | |
92250 |
Photography of the retina | 147 | 142 | $42 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 85 | 64 | $589 | |
66821 |
Removal of recurring cataract in lens capsule using a laser | 37 | 29 | $359 | |
92083 |
Exam of visual field with extended testing | 16 | 16 | $71 | |
66982 |
Complex removal of cataract with insertion of prosthetic lens | 14 | 13 | $806 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 116. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$484
Transactions
10
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Alcon Vision LLC | 2 | $153.37 | |
| Alcon Research LLC | 1 | $118.50 | |
| Johnson & Johnson Surgical Vision, Inc. | 3 | $64.27 | |
| Nova Eye, Inc. | 1 | $59.95 | |
| SUN PHARMACEUTICAL INDUSTRIES INC. | 1 | $34.19 | |
| Carl Zeiss Meditec USA, Inc. | 1 | $30.19 | |
| Amgen Inc. | 1 | $23.45 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,785
Patients
1,051
Total drug cost
$225,793
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 964 | 208 | $19,343 |
| Timolol Maleate | Generic | 332 | 89 | $3,991 |
| Prednisolone Acetate | Generic | 290 | 185 | $9,700 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 241 | 64 | $6,197 |
| Ofloxacin | Generic | 209 | 156 | $2,771 |
| Tobramycin-Dexamethasone (Tobramycin/Dexamethasone) | Brand | 143 | 118 | $9,475 |
| Ketorolac Tromethamine | Generic | 124 | 91 | $2,365 |
| Prolensa (Bromfenac Sodium) | Brand | 99 | 76 | $35,709 |
| Brimonidine Tartrate | Generic | 91 | 13 | $993 |
| Restasis (Cyclosporine) | Brand | 68 | 22 | $56,836 |
Frequently asked questions
What is Dr. Andrew Chang's medical specialty?
Dr. Andrew Chang practices Ophthalmology Physician in Northridge, CA.
Where does Dr. Andrew Chang practice?
Dr. Andrew Chang practices at 18350 Roscoe Blvd, Northridge, CA 913254109. Office phone: 8183498300.
What is Dr. Andrew Chang's NPI?
Dr. Andrew Chang's National Provider Identifier (NPI) is 1003808494, issued by NPPES.
Does Dr. Andrew Chang accept Medicare assignment?
Yes. Dr. Andrew Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Andrew Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient complete exam of visual system (HCPCS 92014); Established patient problem focused exam of visual system (HCPCS 92012); Imaging of retina (HCPCS 92134). Source: CMS Medicare Physician & Other Practitioners file.