Doctor profile · Federal record
Dr. John Chang, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · Specialist · Pearl River, NY
- NPI 1073516027
- Accepts Medicare
- MIPS 5.4 / 100 · 2023
- 28 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
169 N Middletown RD
Pearl River, NY 109652029
(845) 735-5666
fax (845) 735-5673
Credentials & registration
- NPI registered
- May 2005 — 21 yrs on file
- Profile last updated
- April 5, 2017
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State licenses (2)
- New York #225687 · New York #225687-1
- Medicaid
- NY #02362274
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1073516027. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,134
Distinct HCPCS
10
Medicare allowed
$412,308
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92012 |
Established patient problem focused exam of visual system | 899 | 547 | $104 | |
83861 |
Microfluid analysis of tears | 881 | 284 | $22 | |
92202 |
Extended exam of the back part of the eye with optic nerve drawing | 844 | 673 | $17 | |
92014 |
Established patient complete exam of visual system | 668 | 628 | $145 | |
92134 |
Imaging of retina | 580 | 479 | $46 | |
92133 |
Imaging of optic nerve | 237 | 212 | $42 | |
92083 |
Exam of visual field with extended testing | 218 | 201 | $73 | |
92250 |
Photography of the retina | 175 | 165 | $43 | |
92136 |
Measurement of corneal curvature and depth of eye | 139 | 92 | $46 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 106 | 68 | $593 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 233. This provider delivers 22× the peer median.Open Payments
Industry payments received
All-time total
$1,186
Transactions
23
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Glaukos Corporation | 2 | $385.54 | |
| RxSight Inc | 2 | $288.17 | |
| Bausch & Lomb Americas Inc. | 6 | $121.75 | |
| SUN PHARMACEUTICAL INDUSTRIES INC. | 4 | $112.08 | |
| Ocular Therapeutix, Inc. | 2 | $88.99 | |
| Alcon Vision LLC | 3 | $84.90 | |
| Tarsus Pharmaceuticals, Inc. | 2 | $55.50 | |
| Rayner Intraocular Lenses Limited | 1 | $26.13 | |
| Oyster Point Pharma, Inc. | 1 | $22.45 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
961
Patients
491
Total drug cost
$325,156
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Neomycin-Polymyxin-Dexameth (Neomycin/Polymyxin B/Dexametha) | Brand | 114 | 88 | $1,423 |
| Latanoprost | Generic | 101 | 28 | $1,402 |
| Restasis (Cyclosporine) | Brand | 101 | 40 | $108,439 |
| Tobramycin-Dexamethasone (Tobramycin/Dexamethasone) | Brand | 98 | 77 | $8,944 |
| Prednisolone Acetate | Generic | 92 | 71 | $5,088 |
| Loteprednol Etabonate | Generic | 84 | 62 | $26,723 |
| Xiidra (Lifitegrast) | Brand | 65 | 42 | $85,770 |
| Timolol Maleate | Generic | 49 | 18 | $790 |
| Travoprost | Generic | 46 | 14 | $12,642 |
| Alphagan P (Brimonidine Tartrate) | Brand | 44 | 12 | $19,050 |
Frequently asked questions
What is Dr. John Chang's medical specialty?
Dr. John Chang practices Ophthalmology Physician in Pearl River, NY.
Where does Dr. John Chang practice?
Dr. John Chang practices at 169 N Middletown RD, Pearl River, NY 109652029. Office phone: 8457355666.
What is Dr. John Chang's NPI?
Dr. John Chang's National Provider Identifier (NPI) is 1073516027, issued by NPPES.
Does Dr. John Chang accept Medicare assignment?
Yes. Dr. John Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient problem focused exam of visual system (HCPCS 92012); Microfluid analysis of tears (HCPCS 83861); Extended exam of the back part of the eye with optic nerve drawing (HCPCS 92202). Source: CMS Medicare Physician & Other Practitioners file.