Howard Yuan-Hao Chang, MD
NPI 1326061144ActiveIndividual· Dermatology· Stanford, CA
Dermatology (MD) in Stanford, California, licensed in CA, with an NPI issued in July 2006. Mostly services rather than prescriptions: Medicare paid $3,192 for 33 patients in 2024, with only 21 Part D claims. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $172.15 in all, mostly food and beverage.
Overview
| NPI | 1326061144 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 25, 2006 |
| Last updated in NPPES | Apr 16, 2024 |
| Certified by provider | Apr 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | A76256 | CA |
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 - Dermatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 33 |
|---|---|
| Services billed | 150 across 9 procedure codes |
| Paid by Medicare | $3,192 |
Part D prescriptions in 2024
| Prescriptions (claims) | 21 · 21 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $307.41 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$172.15 · 2 payments from 2 companies
- 2024$5,236 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $149.00 | 1 |
| Neurocrine Biosciences, Inc. | $23.15 | 1 |
What the 2025 payments were for
- Food and Beverage$172.15 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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