James Melvin Long, M.D.
Internal Medicine, Hematology & Oncology (M.D.) in Vacaville, California, trained at University of Texas Medical Branch at Galveston (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $1,258,956 for 1,152 claims, against $88,866 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 8 companies reporting payments in 2025, $400.72 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1194821868 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 16, 2006 |
| Last updated in NPPES | Dec 21, 2023 |
| Certified by provider | Dec 21, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | C50016 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | James B. Long | 1128a1 | Mar 14, 1984 | Santa Ana, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 | 283 |
|---|---|
| Services billed | 1,323 across 16 procedure codes |
| Paid by Medicare | $88,866 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,152 · 1,700 30-day fills |
|---|---|
| Patients | 173 |
| Total drug cost | $1,258,956 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Northbay Physicians Surgery Center, LLCFairfield, CA · 324 clinicians
- Northbay Health Medical FoundationFairfield, CA · 213 clinicians
Hospital affiliations
- Northbay Medical CenterFairfield, CA
- Sutter Medical Center, SacramentoSacramento, CA
Other facilities
- Healthflex Home Health ServicesHome health agency · Oakland, CA
- Solano CareHospice · Vacaville, CA
Industry payments (Open Payments)
- 2025$400.72 · 16 payments from 8 companies
- 2024$134.04 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $96.05 | 5 |
| Celgene Corporation | $92.10 | 3 |
| Array Biopharma Inc | $52.15 | 2 |
| Abbvie Inc. | $48.26 | 2 |
| Deciphera Pharmaceuticals Inc. | $35.48 | 1 |
What the 2025 payments were for
- Food and Beverage$400.72 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Vacaville
- 1285730820
- 1790004943