James Patrick Tomas, MD
NPI 1902040819ActiveIndividual· Internal Medicine, Nephrology· San Bernardino, CA
Internal Medicine, Nephrology (MD) with Nephrology Associates Medical Group Inc and 1 other group, practicing in San Bernardino, California. Their prescriptions cost Medicare Part D more than their services did: $951,438 for 2,555 claims, against $140,753 paid for services in 2024. Apellis Pharmaceuticals, Inc. was the largest of 5 companies reporting payments in 2025, $104.42 in all, mostly food and beverage. Lists Community Hospital of San Bernardino and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1902040819 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 22, 2009 |
| Last updated in NPPES | Jun 24, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A120476 | 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 - Nephrology (CA); Practitioner - Nephrology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 335 |
|---|---|
| Services billed | 1,634 across 30 procedure codes |
| Paid by Medicare | $140,753 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,555 · 4,271 30-day fills |
|---|---|
| Patients | 269 |
| Total drug cost | $951,438 |
| Generic share | 60% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical groups
- Nephrology Associates Medical Group IncTemecula, CA · 64 clinicians
- Riverside-San Bernardino County Indian Health IncGrand Terrace, CA · 46 clinicians
Hospital affiliations
- Community Hospital of San BernardinoSan Bernardino, CA
- Redlands Community HospitalRedlands, CA
- San Gorgonio Memorial HospitalBanning, CA
- St Bernardine Medical CenterSan Bernardino, CA
Other facilities
- Davita Banning DialysisDialysis facility · Banning, CA
- Davita Serrano DialysisDialysis facility · San Bernardino, CA
- Ballard Rehabilitation HospitalInpatient rehabilitation facility · San Bernardino, CA
Industry payments (Open Payments)
- 2025$104.42 · 6 payments from 5 companies
- 2024$147.37 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Apellis Pharmaceuticals, Inc. | $35.82 | 2 |
| Novo Nordisk Inc | $20.00 | 1 |
| Ardelyx, Inc. | $18.41 | 1 |
| Astrazeneca Pharmaceuticals LP | $16.60 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $13.59 | 1 |
What the 2025 payments were for
- Food and Beverage$104.42 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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