Wengang Zhang, M.D.
NPI 1063451243ActiveIndividual· Internal Medicine· Pittsburg, CA
Internal Medicine (M.D.) with Pittsburg-Antioch Medical Group A Professional Corporation, practicing in Pittsburg, California. Their prescriptions cost Medicare Part D more than their services did: $709,433 for 8,086 claims, against $215,718 paid for services in 2024. Janssen Biotech, Inc. reported $44.86 in payments in 2025, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1063451243 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 5, 2006 |
| Last updated in NPPES | Aug 1, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A65147 | 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 | 373 |
|---|---|
| Services billed | 2,399 across 39 procedure codes |
| Paid by Medicare | $215,718 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,086 · 13,874 30-day fills |
|---|---|
| Patients | 675 |
| Total drug cost | $709,433 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Pittsburg-Antioch Medical Group A Professional CorporationPittsburg, CA · 14 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- Sutter Delta Medical CenterAntioch, CA
Other facilities
- Amavi Home Health and Hospice Care Services, Inc.Home health agency · Brentwood, CA
- Bay Nation Home Health Services IncHome health agency · Newark, CA
- Home Health of St Camillus LLCHome health agency · Antioch, CA
- Prohealth Home Care, IncHome health agency · Stockton, CA
- Diamond Ridge Healthcare CenterNursing home · Pittsburg, CA
- Lone Tree Post AcuteNursing home · Antioch, CA
Industry payments (Open Payments)
- 2025$44.86 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $44.86 | 2 |
What the 2025 payments were for
- Food and Beverage$44.86 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 internal medicine physicians in Pittsburg · All internal medicine physicians in California