Willis Chang, M.D.
NPI 1609253103ActiveIndividual· Emergency Medicine· Las Vegas, NV
Emergency Medicine (M.D.) in Las Vegas, Nevada, trained at Wayne State University School of Medicine (class of 2015). 237 Medicare patients in 2024, $32,849 paid; nearly all of their 130 Part D prescriptions were generic (92%). Abbvie Inc. reported $85.48 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1609253103 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 4, 2015 |
| Last updated in NPPES | Jul 20, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 17812 | NV |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 237 |
|---|---|
| Services billed | 267 across 10 procedure codes |
| Paid by Medicare | $32,849 |
Part D prescriptions in 2024
| Prescriptions (claims) | 130 · 132 30-day fills |
|---|---|
| Patients | 91 |
| Total drug cost | $2,031 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Emergency Medicine |
Medical group
- Fremont Emergency Services Scherr LtdLas Vegas, NV · 133 clinicians
Hospital affiliations
- Sunrise Hospital and Medical CenterLas Vegas, NV
- West Henderson HospitalHenderson, NV
Industry payments (Open Payments)
- 2025$85.48 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $85.48 | 3 |
What the 2025 payments were for
- Food and Beverage$85.48 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 356 emergency medicine physicians in Las Vegas · All emergency medicine physicians in Nevada