Jason Kung, MD
NPI 1154958247ActiveIndividual· Internal Medicine· Walnut Creek, CA
Internal Medicine (MD) with Permanente Medical Group Inc, practicing in Walnut Creek, California. Their prescriptions cost Medicare Part D more than their services did: $34,349 for 527 claims, against $4,643 paid for services in 2024. Boston Scientific Corporation reported $231.93 in payments in 2025, mostly food and beverage. Lists Kaiser Foundation Hospital - Walnut Creek as a hospital affiliation.
Overview
| NPI | 1154958247 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 26, 2020 |
| Last updated in NPPES | Jul 24, 2023 |
| Certified by provider | Jul 24, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A184700 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 | 11 |
|---|---|
| Services billed | 69 across 5 procedure codes |
| Paid by Medicare | $4,643 |
Part D prescriptions in 2024
| Prescriptions (claims) | 527 · 667 30-day fills |
|---|---|
| Patients | 173 |
| Total drug cost | $34,349 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - Walnut CreekWalnut Creek, CA
Industry payments (Open Payments)
- 2025$231.93 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $231.93 | 3 |
What the 2025 payments were for
- Food and Beverage$231.93 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Walnut Creek
- 1003139445
- 1033160692
- 1083849111
- 1104062173
- 1144406273
- 1184645715
- 1184656688
- 1184760423
- 1184910390
- 1184916082
- 1215983440
- 1215988878
All 204 internal medicine physicians in Walnut Creek · All internal medicine physicians in California