Ching Hai Chang, MD
NPI 1174545909ActiveIndividual· Family Medicine· Walnut Creek, CA
Family Medicine (MD) in Walnut Creek, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $467,572 for 6,059 claims, against $52,042 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 17 companies reporting payments in 2025, $876.26 in all, mostly food and beverage. Lists John Muir Medical Center - Walnut Creek Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1174545909 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 24, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A34364 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 165 |
|---|---|
| Services billed | 871 across 14 procedure codes |
| Paid by Medicare | $52,042 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,059 · 15,128 30-day fills |
|---|---|
| Patients | 478 |
| Total drug cost | $467,572 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1967 |
|---|---|
| Medicare specialty | Family Practice |
Hospital affiliations
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Los Angeles General Medical CenterLos Angeles, CA
Industry payments (Open Payments)
- 2025$876.26 · 39 payments from 17 companies
- 2024$938.03 · 42 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $192.41 | 11 |
| Glaxosmithkline, LLC. | $135.68 | 5 |
| Lilly USA, LLC | $86.75 | 3 |
| Astellas Pharma US Inc | $77.28 | 3 |
| Pfizer Inc. | $55.84 | 2 |
What the 2025 payments were for
- Food and Beverage$876.26 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 130 family medicine physicians in Walnut Creek · All family medicine physicians in California