Doctor profile · Federal record
Dr. Margaret Chang, M.D.
Retina Specialist (Ophthalmology) Physician (CMS: Ophthalmology) · Ophthalmology Physician · Sacramento, CA
- NPI 1477504405
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 24 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3939 J St, Ste 106
Sacramento, CA 958193631
(916) 454-4861
fax (916) 454-3603
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- April 2, 2017
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207WX0107X — NUCC code
- State licenses (2)
- California #A103453 · Maryland #D64111
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477504405. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
51,946
Distinct HCPCS
10
Medicare allowed
$5,525,146
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J2777 |
Injection, faricimab-svoa, 0.1 mg | 36,000 | 113 | $37 | |
92134 |
Imaging of retina | 3,898 | 1,530 | $43 | |
J0178 |
Injection, aflibercept, 1 mg | 2,596 | 311 | $870 | |
67028 |
Injection of drug into eye | 2,330 | 598 | $132 | |
92014 |
Established patient complete exam of visual system | 1,321 | 920 | $135 | |
Q5128 |
Injection, ranibizumab-eqrn (cimerli), biosimilar, 0.1 mg | 1,218 | 100 | $275 | |
Q5124 |
Injection, ranibizumab-nuna, biosimilar, (byooviz), 0.1 mg | 995 | 44 | $217 | |
J2778 |
Injection, ranibizumab, 0.1 mg | 830 | 71 | $235 | |
92012 |
Established patient problem focused exam of visual system | 733 | 485 | $97 | |
J7312 |
Injection, dexamethasone, intravitreal implant, 0.1 mg | 420 | 26 | $199 |
In context: peer comparison
Among 10 peers in Sacramento Retina Specialist (Ophthalmology) Physician, average services per provider: 1,157. This provider delivers 45× the peer median.Open Payments
Industry payments received
All-time total
$68,720
Transactions
70
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Genentech, INC. | 3 | $16,705.00 | |
| F. Hoffmann-la Roche Ag | 5 | $15,515.31 | |
| Ocular Therapeutix, INC. | 9 | $15,050.83 | |
| Genentech USA, INC. | 13 | $8,986.04 | |
| Abbvie INC. | 3 | $2,468.98 | |
| Astellas Pharma Global Development | 1 | $2,382.00 | |
| EyePoint Pharmaceuticals US, INC. | 5 | $2,054.66 | |
| Carl Zeiss Meditec, INC. | 2 | $2,025.00 | |
| Boehringer Ingelheim International GmbH | 2 | $1,325.00 | |
| Astellas Pharma US INC | 8 | $1,018.53 | |
| Apellis Pharmaceuticals, INC. | 9 | $528.09 | |
| Regeneron Healthcare Solutions, INC. | 5 | $411.39 | |
| Regeneron Pharmaceuticals, INC. | 2 | $93.47 | |
| Topcon Healthcare, INC. | 1 | $59.74 | |
| Amgen INC. | 2 | $49.82 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
526
Patients
306
Total drug cost
$21,233
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ketorolac Tromethamine | Generic | 172 | 66 | $5,790 |
| Prednisolone Acetate | Generic | 132 | 99 | $7,407 |
| Ofloxacin | Generic | 88 | 80 | $1,308 |
| Latanoprost | Generic | 43 | 21 | $1,214 |
| Brimonidine Tartrate | Generic | 27 | 14 | $465 |
| Timolol Maleate | Generic | 27 | 15 | $401 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 23 | 11 | $725 |
| Combigan (Brimonidine Tartrate/Timolol) | Brand | 14 | 0 | $3,922 |
Frequently asked questions
What is Dr. Margaret Chang's medical specialty?
Dr. Margaret Chang practices Retina Specialist (Ophthalmology) Physician in Sacramento, CA.
Where does Dr. Margaret Chang practice?
Dr. Margaret Chang practices at 3939 J St, Sacramento, CA 958193631. Office phone: 9164544861.
What is Dr. Margaret Chang's NPI?
Dr. Margaret Chang's National Provider Identifier (NPI) is 1477504405, issued by NPPES.
Does Dr. Margaret Chang accept Medicare assignment?
Yes. Dr. Margaret Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Chang commonly perform?
Top Medicare-reported procedures in 2023: Injection, faricimab-svoa, 0.1 mg (HCPCS J2777); Imaging of retina (HCPCS 92134); Injection, aflibercept, 1 mg (HCPCS J0178). Source: CMS Medicare Physician & Other Practitioners file.