Joann Cong Yin Chang, M.D.
NPI 1730359100ActiveIndividual· Ophthalmology· Lancaster, MA
Ophthalmology (M.D.) in Lancaster, Massachusetts, trained at University of Cincinnati College of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $977,858 for 2,271 claims, against $331,876 paid for services in 2024. Tarsus Pharmaceuticals, Inc. was the largest of 8 companies reporting payments in 2025, $786.50 in all, mostly food and beverage.
Overview
| NPI | 1730359100 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 2, 2008 |
| Last updated in NPPES | May 2, 2022 |
| Certified by provider | May 2, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 243192 | MA |
| Ophthalmology | 207W00000X | 267568 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 742 |
|---|---|
| Services billed | 3,190 across 48 procedure codes |
| Paid by Medicare | $331,876 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,271 · 3,083 30-day fills |
|---|---|
| Patients | 731 |
| Total drug cost | $977,858 |
| Generic share | 35% of claims |
Education and affiliations
| Medical school | University of Cincinnati College of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Ophthalmology |
Medical group
- D'Ambrosio Eye Care IncLancaster, MA · 12 clinicians
Hospital affiliations
- Umass Memorial Healthalliance HospitalsLeominster, MA
- Umass Memorial Medical Center/University CampusWorcester, MA
Industry payments (Open Payments)
- 2025$786.50 · 12 payments from 8 companies
- 2024$1,044 · 14 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tarsus Pharmaceuticals, Inc. | $295.16 | 2 |
| Alcon Vision LLC | $135.28 | 3 |
| Dompe US, Inc. | $119.86 | 1 |
| Apellis Pharmaceuticals, Inc. | $117.83 | 1 |
| Rxsight Inc | $41.98 | 1 |
What the 2025 payments were for
- Food and Beverage$786.50 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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