Ophthalmology · Lancaster, MA
NPI
1730359100
Since 2008
Specialty
Ophthalmology
Code 207W00000X
Group practices
1
Medicare group memberships
Hospitals
2
Hospital affiliations
479 Old Union Tpke
Lancaster, MA, 01523
Phone (978) 537-3900
Groups this clinician bills Medicare through
Medicare paid, 2024
$332K
3,190 services
Medicare patients, 2024
742
Average age 73
Drug cost, 2024
$978K
2,271 prescriptions
Company payments, 2025
$787
From 8 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Joann C Chang was code 92136 (ultrasound - nonspecific), 605 times for 267 patients. In total Joann C Chang billed 3,190 services in 48 codes, and Medicare paid $332K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2022-05-02.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 92136 Ultrasound - Nonspecific | Office | 605 | 267 | $19.72 | $12K |
| 99213 Office E&M - Established | Office | 569 | 397 | $64.75 | $37K |
| 99214 Office E&M - Established | Office | 355 | 318 | $94.19 | $33K |
| 66984 Cataract Surgery | Facility | 310 | 176 | $442.45 | $137K |
| 92134 Computerized Ophthalmic Imaging | Office | 235 | 219 | $27.97 | $6,573 |
| 68841 Eye | Facility | 210 | 124 | $13.23 | $2,779 |
| 92286 Standard X-ray | Office | 190 | 170 | $29.90 | $5,681 |
| 68761 Eye | Office | 102 | 85 | $153.51 | $16K |
| 92014 Ophthalmological E&M | Office | 98 | 98 | $86.77 | $8,504 |
| 99204 Office E&M - New | Office | 92 | 92 | $125.14 | $12K |
| 92250 Angiography | Office | 78 | 77 | $24.49 | $1,910 |
| 66821 Cataract Surgery | Office | 64 | 52 | $266.37 | $17K |
| 92083 Vision, Hearing, and Speech Services | Office | 30 | 25 | $47.12 | $1,414 |
| 92285 Standard X-ray | Office | 29 | 27 | $18.99 | $551 |
| 76514 Ultrasound - Nonspecific | Office | 29 | 25 | $8.48 | $246 |
By year: 2022 $325K for 2,959 services; 2023 $312K for 2,904 services; 2024 $332K for 3,190 services.
Medicare prescription drug claims, 2024
In 2024, the drug Joann C Chang prescribed most often to Medicare patients was Prednisolone Acetate, with 679 prescriptions and refills. In total Joann C Chang wrote 2,271 Medicare prescriptions that cost $978K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Prednisolone Acetate Generic | 679 | 756 | 386 | $21K |
| Ketorolac Tromethamine Generic | 275 | 315 | 199 | $4,777 |
| Restasis Cyclosporine | 199 | 445 | 78 | $258K |
| Moxifloxacin Moxifloxacin Hcl | 175 | 175 | 110 | $3,038 |
| Bromfenac Sodium Generic | 144 | 186 | 80 | $23K |
| Miebo Perfluorohexyloctane/Pf | 83 | 83 | 22 | $62K |
| Tyrvaya Varenicline Tartrate | 69 | 78 | 13 | $50K |
| Valacyclovir Valacyclovir Hcl | 58 | 86 | 19 | $1,201 |
| Cyclosporine Generic | 55 | 116 | 30 | $33K |
| Xiidra Lifitegrast | 52 | 141 | 25 | $94K |
| Doxycycline Monohydrate Generic | 45 | 47 | 21 | $778 |
| Fluorometholone Generic | 44 | 86 | 17 | $3,310 |
| Ilevro Nepafenac | 43 | 77 | 34 | $16K |
| Lotemax Loteprednol Etabonate | 41 | 44 | 13 | $15K |
| Bromsite Bromfenac Sodium | 39 | 45 | 25 | $11K |
Brand drugs: 1,465 claims; generic drugs: 806 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Joann C Chang $787 ($787 in general payments such as food, travel and fees) from 8 companies. The largest payer was Tarsus Pharmaceuticals, Inc. with $295.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.