Emmanuel Yih-Herng Chang, MD/PHD
NPI 1083877740ActiveIndividual· Ophthalmology, Retina Specialist· Bellaire, TX
Ophthalmology, Retina Specialist (MD/PHD) in Bellaire, Texas, trained at Baylor College of Medicine (class of 2007). In 2024 Medicare paid $2,680,698 for 683 patients, and Part D covered 1,240 of their prescriptions, 66% of them generic. Bausch & Lomb Americas Inc. was the largest of 9 companies reporting payments in 2025, $31,082 in all, mostly consulting fees.
Overview
| NPI | 1083877740 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD/PHD |
| Sole proprietor | No |
| NPI issued | Jul 3, 2008 |
| Last updated in NPPES | Oct 22, 2024 |
| Certified by provider | Oct 22, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Retina Specialist Primary | 207WX0107X | P5786 | TX |
| Ophthalmology | 207W00000X | P5786 | TX |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 683 |
|---|---|
| Services billed | 64,926 across 50 procedure codes |
| Paid by Medicare | $2,680,698 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,240 · 2,206 30-day fills |
|---|---|
| Patients | 282 |
| Total drug cost | $61,127 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | Baylor College of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Ophthalmology |
Medical group
- Retina and Vitreous of Texas PLLCBellaire, TX · 10 clinicians
Industry payments (Open Payments)
- 2025$31,082 · 66 payments from 9 companies
- 2024$53,206 · 69 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $10,660 | 13 |
| Genentech USA, Inc. | $7,928 | 21 |
| Regeneron Healthcare Solutions, Inc. | $7,543 | 17 |
| Carl Zeiss Meditec USA, Inc. | $4,449 | 3 |
| Astellas Pharma US Inc | $231.19 | 6 |
What the 2025 payments were for
- Consulting Fee$15,600 · 2 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$10,257 · 4 payments
- Travel and Lodging$2,712 · 6 payments
- Food and Beverage$2,513 · 54 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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