James Tomas, MD
NPI 1902040819 · Nephrology Physician · San Bernardino, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Tomas, MD is a Nephrology Physician provider in San Bernardino, CA (NPI 1902040819).
Provider details
- NPI number
- 1902040819
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A120476 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,375 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 704 | $78 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 176 | $345 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 116 | $118 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 78 | $116 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 69 | $130 |
| Hemodialysis Procedure With Physician Evaluation90935 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Allopurinol | 322 | 80 |
| Calcifediolbrand: Rayaldee | 252 | 29 |
| Sodium Zirconium Cyclosilicatebrand: Lokelma | 138 | 29 |
| Ferric Citratebrand: Auryxia | 135 | 22 |
| Losartan Potassium | 134 | 42 |
| Patiromer Calcium Sorbitexbrand: Veltassa | 131 | 31 |
| Hydralazine Hcl | 123 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$147 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-22
- Last updated
- 2014-06-24
Frequently asked questions
- What is James Tomas's NPI number?
- James Tomas's National Provider Identifier (NPI) is 1902040819, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Tomas's specialty?
- James Tomas is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is James Tomas located?
- James Tomas's practice location on file with NPPES is 401 E Highland Ave, San Bernardino, CA 92404-3803.
- What is James Tomas's phone number?
- The practice phone number listed in the NPPES registry for James Tomas is (909) 882-9150.
- Does James Tomas accept Medicare?
- James Tomas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Tomas's NPI active?
- Yes — James Tomas's NPI (1902040819) is active in the NPPES registry as of the last update on 2014-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.