Dennis Ta-Jen Chang, MD
NPI 1952545915ActiveIndividual· Psychiatry & Neurology, Psychiatry· North Las Vegas, NV
Psychiatry & Neurology, Psychiatry (MD) in North Las Vegas, Nevada, trained at University of Nevada School of Medicine (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $241,076 for 718 claims, against $2,743 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. reported $38.03 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1952545915 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 21, 2009 |
| Last updated in NPPES | Jul 3, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 14597 | NV |
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 - Psychiatry (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 46 across 1 procedure code |
| Paid by Medicare | $2,743 |
Part D prescriptions in 2024
| Prescriptions (claims) | 718 · 1,125 30-day fills |
|---|---|
| Patients | 42 |
| Total drug cost | $241,076 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | University of Nevada School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- State of NevadaLas Vegas, NV · 58 clinicians
Industry payments (Open Payments)
- 2025$38.03 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $38.03 | 2 |
What the 2025 payments were for
- Food and Beverage$38.03 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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