Maribeth Ruiz, M.D./PH.D.
NPI 1538425764 · Student in an Organized Health Care Education/Training Program · Santa Clara, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maribeth Ruiz, M.D./PH.D. is a Student in an Organized Health Care Education/Training Program provider in Santa Clara, CA (NPI 1538425764).
Provider details
- NPI number
- 1538425764
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D./PH.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 104 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 480 | 166 |
| Amlodipine Besylate | 424 | 146 |
| Levothyroxine Sodium | 263 | 83 |
| Lisinopril | 215 | 77 |
| Losartan Potassium | 198 | 70 |
| Atenolol | 165 | 57 |
| Fluticasone Propionate | 137 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 2 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
- 2012-04-02
- Last updated
- 2021-12-15
Frequently asked questions
- What is Maribeth Ruiz's NPI number?
- Maribeth Ruiz's National Provider Identifier (NPI) is 1538425764, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maribeth Ruiz's specialty?
- Maribeth Ruiz is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Maribeth Ruiz located?
- Maribeth Ruiz's practice location on file with NPPES is 700 Lawrence Expy, Santa Clara, CA 95051-5173.
- What is Maribeth Ruiz's phone number?
- The practice phone number listed in the NPPES registry for Maribeth Ruiz is (408) 581-3834.
- Does Maribeth Ruiz accept Medicare?
- Maribeth Ruiz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maribeth Ruiz's NPI active?
- Yes — Maribeth Ruiz's NPI (1538425764) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.