Abraham K. Chung, M.D.
NPI 1104845858ActiveIndividual· Hospitalist· Walnut Creek, CA
Hospitalist (M.D.) in Walnut Creek, California, trained at University of California, Geffen School of Medicine (class of 1999). In 2024 Medicare paid $64,419 for 302 patients, and Part D covered 178 of their prescriptions, 88% of them generic. Abbott Laboratories reported $20.22 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1104845858 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 19, 2006 |
| Last updated in NPPES | Aug 5, 2026 |
| Certified by provider | Aug 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A74982 | CA |
| Internal Medicine | 207R00000X | A74982 | 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 | 302 |
|---|---|
| Services billed | 668 across 8 procedure codes |
| Paid by Medicare | $64,419 |
Part D prescriptions in 2024
| Prescriptions (claims) | 178 · 205 30-day fills |
|---|---|
| Patients | 68 |
| Total drug cost | $12,770 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- Contra Costa Regional Medical CenterMartinez, CA
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2024$20.22 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $20.22 | 1 |
What the 2024 payments were for
- Food and Beverage$20.22 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 72 hospitalists in Walnut Creek · All hospitalists in California