Kenneth H. Chang, MD
NPI 1609832724ActiveIndividual· Internal Medicine· San Francisco, CA
Internal Medicine (MD) in San Francisco, California, licensed in CA, with an NPI issued in April 2006. Their prescriptions cost Medicare Part D more than their services did: $1,636,516 for 20,545 claims, against $188,623 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $94.18 in all, mostly food and beverage. Lists California Pacific Medical Center- Van Ness Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1609832724 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 26, 2006 |
| Last updated in NPPES | Mar 3, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A55424 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 422 |
|---|---|
| Services billed | 2,461 across 19 procedure codes |
| Paid by Medicare | $188,623 |
Part D prescriptions in 2024
| Prescriptions (claims) | 20,545 · 50,864 30-day fills |
|---|---|
| Patients | 1,488 |
| Total drug cost | $1,636,516 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- Chinese HospitalSan Francisco, CA
Other facilities
- Centerwell Asian American Home HealthHome health agency · Alameda, CA
- Harmony Home HealthHome health agency · Daly City, CA
- Healthflex Home Health ServicesHome health agency · Oakland, CA
- Self-Help Homecare & HospiceHome health agency · San Francisco, CA
Industry payments (Open Payments)
- 2025$94.18 · 4 payments from 2 companies
- 2024$94.02 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $52.86 | 2 |
| Gilead Sciences, Inc. | $41.32 | 2 |
What the 2025 payments were for
- Food and Beverage$94.18 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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