Jonathan D. Lopez, MD
NPI 1881682714ActiveIndividual· Internal Medicine, Hematology & Oncology· Fairfield, CA
Internal Medicine, Hematology & Oncology (MD) in Fairfield, California, trained at Uniformed Services Uhs Fe Hebert School of Med (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $1,305,811 for 1,145 claims, against $148,625 paid for services in 2024. Celgene Corporation was the largest of 9 companies reporting payments in 2025, $295.59 in all, mostly food and beverage.
Overview
| NPI | 1881682714 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 13, 2005 |
| Last updated in NPPES | Mar 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A102015 | 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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 373 |
|---|---|
| Services billed | 2,036 across 11 procedure codes |
| Paid by Medicare | $148,625 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,145 · 1,837 30-day fills |
|---|---|
| Patients | 166 |
| Total drug cost | $1,305,811 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Uniformed Services Uhs Fe Hebert School of Med |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Northbay Physicians Surgery Center, LLCFairfield, CA · 324 clinicians
Hospital affiliation
- Northbay Medical CenterFairfield, CA
Industry payments (Open Payments)
- 2025$295.59 · 12 payments from 9 companies
- 2024$211.07 · 9 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Celgene Corporation | $65.45 | 2 |
| Novartis Pharmaceuticals Corporation | $61.26 | 3 |
| Genentech USA, Inc. | $33.52 | 1 |
| Array Biopharma Inc | $27.45 | 1 |
| Daiichi Sankyo Inc. | $26.45 | 1 |
What the 2025 payments were for
- Food and Beverage$295.59 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Fairfield
- 1497877500
- 1649492166
All Internal Medicine, Hematology & Oncology providers in California →