Jerry Z. Yang, MD
NPI 1538247606ActiveIndividual· Internal Medicine· Martinez, CA
Internal Medicine (MD) with John Muir Physician Network, practicing in Martinez, California. In 2024 Medicare paid $57,577 for 418 patients, and Part D covered 590 of their prescriptions, 83% of them generic. Next Science LLC was the largest of 6 companies reporting payments in 2025, $411.94 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1538247606 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 2, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A65932 | 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 | 418 |
|---|---|
| Services billed | 861 across 27 procedure codes |
| Paid by Medicare | $57,577 |
Part D prescriptions in 2024
| Prescriptions (claims) | 590 · 954 30-day fills |
|---|---|
| Patients | 339 |
| Total drug cost | $24,334 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$411.94 · 9 payments from 6 companies
- 2024$308.63 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Next Science LLC | $137.13 | 1 |
| Motiva USA, LLC | $90.47 | 1 |
| Glaxosmithkline, LLC. | $74.16 | 3 |
| Vifor Pharma, Inc. | $62.60 | 2 |
| Merck Sharp & Dohme LLC | $28.26 | 1 |
What the 2025 payments were for
- Food and Beverage$411.94 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 48 internal medicine physicians in Martinez · All internal medicine physicians in California