Ruben Ruiz, M.D.
NPI 1912901471 · Specialist · Rialto, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1912901471
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G052245 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
4,853 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,248 | $126 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 944 | $92 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 730 | $14 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 643 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 231 | $127 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 126 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 106 | 46 |
| Losartan Potassium | 91 | 32 |
| Metformin Hcl | 86 | 38 |
| Amlodipine Besylate | 65 | 23 |
| Lisinopril | 55 | 26 |
| Tamsulosin Hcl | 52 | 23 |
| Ibuprofen | 51 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$451 across 19 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
Additional practice locations (3)
- 901 W Whittier BlvdMontebello, CA 90640-4737Phone: (323) 728-8588Fax: (323) 728-4444
- 833 W Whittier BlvdMontebello, CA 90640-4735Phone: (323) 712-4811Fax: (323) 544-6488
- 403 W F StOntario, CA 91762-3207Phone: (909) 988-3288Fax: (909) 988-6767
Registry dates
- Enumerated
- 2005-06-10
- Last updated
- 2019-01-16
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.