Joseph H. Chang, MD
NPI 1558420174ActiveIndividual· Urology· Harbor City, CA
Urology (MD) in Harbor City, California, trained at University of California, Irvine, California College of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $295,879 for 2,168 claims, against $1,529 paid for services in 2024. Coloplast Corp was the largest of 3 companies reporting payments in 2025, $116.62 in all, mostly food and beverage.
Overview
| NPI | 1558420174 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 8, 2006 |
| Last updated in NPPES | Dec 2, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | A74975 | 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 - Urology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 19 across 10 procedure codes |
| Paid by Medicare | $1,529 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,168 · 5,585 30-day fills |
|---|---|
| Patients | 660 |
| Total drug cost | $295,879 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Urology |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Industry payments (Open Payments)
- 2025$116.62 · 3 payments from 3 companies
- 2024$246.44 · 7 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Coloplast Corp | $48.24 | 1 |
| Medtronic, Inc. | $42.98 | 1 |
| Boston Scientific Corporation | $25.40 | 1 |
What the 2025 payments were for
- Food and Beverage$116.62 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other urologists in Harbor City
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