Chang, Wai Yin
Chang, Wai Yin was paid $192K by Medicaid between Sep 2020 and Oct 2022, across 11 billing codes. Its largest line is 92014, Ophthalmological services: medical examination and evaluation, comprehensive, established patient — 27% of everything it billed.
33Billing provider infoCHANG, WAI YIN
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
33aNPI1104478445assigned 07/16/2019
33bProvider typeOptometrist
28Total paid$192K
24GClaims12,952
24DCodes billed11
24AFirst – last monthSep 2020 – Oct 2022
Compared with peers
Next to other Optometrist providers in Maryland
Rank by total paid#47 of 345
Median peer was paid$27K
This provider vs. median7.0×
Peers share this provider's primary NPPES type and state. Size alone says nothing about billing quality: a big agency or a hospital system is expected to sit far above the median.
Box 24A · Dates of service
Paid by month
Paid that monthNov–Dec 2024: claims still arriving when the file was cut, so these months run low for every provider
By year, as a table
| Year | Claims | Paid | |
|---|---|---|---|
| 2020 | 681 | $13K | |
| 2021 | 6,894 | $108K | |
| 2022 | 5,377 | $70K |
Box 24 · Service lines
What it billed for
| Code | Service | Share | Claims | Bene. records | Paid |
|---|---|---|---|---|---|
| 92014 | Ophthalmological services: medical examination and evaluation, comprehensive, established patient | 27% | 2,142 | 1,806 | $52K |
| V2100 | Sphere, single vision, plano to plus or minus 4.00, per lens | 21% | 2,122 | 1,986 | $40K |
| V2020 | Frames, purchases | 20% | 2,563 | 2,411 | $38K |
| 92004 | Ophthalmological services: medical examination and evaluation, comprehensive, new patient | 15% | 1,205 | 1,003 | $28K |
| V2781 | Progressive lens, per lens | 6.1% | 279 | 257 | $12K |
| V2784 | Lens, polycarbonate or equal, any index, per lens | 5.8% | 1,485 | 1,385 | $11K |
| V2299 | Specialty bifocal (by report) | 4.2% | 280 | 258 | $8K |
| V2200 | Sphere, bifocal, plano to plus or minus 4.00d, per lens | 1.3% | 82 | 80 | $3K |
| V2744 | Tint, photochromatic, per lens | 0% | 18 | 18 | $0.00 |
| V2750 | Anti-reflective coating, per lens | 0% | 633 | 587 | $0.00 |
| 92015 | Determination of refractive state | 0% | 2,143 | 1,986 | $0.00 |
Claims and beneficiary counts add up across code × month rows, so one patient seen every month counts many times. Rows with fewer than 12 claims are suppressed by HHS, so small lines can be missing.