Ellison Chang, MD
NPI 1508906181ActiveIndividual· Psychiatry & Neurology, Psychiatry· Riverside, CA
Psychiatry & Neurology, Psychiatry (MD) in Riverside, California, trained at University of Hawaii John A. Burns School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $308,772 for 2,089 claims, against $3,801 paid for services in 2024. Boston Scientific Corporation reported $27.27 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1508906181 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 6, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | G67488 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 21 |
|---|---|
| Services billed | 48 across 6 procedure codes |
| Paid by Medicare | $3,801 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,089 · 2,707 30-day fills |
|---|---|
| Patients | 158 |
| Total drug cost | $308,772 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- County of RiversideIndio, CA · 193 clinicians
Industry payments (Open Payments)
- 2025$27.27 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $27.27 | 1 |
What the 2025 payments were for
- Food and Beverage$27.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 153 psychiatrists in Riverside · All psychiatrists in California