Dannel Diaz Ruiz, MD
NPI 1679066435 · Endocrinology, Diabetes & Metabolism Physician · Mayaguez,, PR
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dannel Diaz Ruiz, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Mayaguez,, PR (NPI 1679066435).
Provider details
- NPI number
- 1679066435
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 35253-R (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% 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 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 145 | 58 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 115 | 64 |
| Empagliflozinbrand: Jardiance | 111 | 38 |
| Metformin Hclbrand: Metformin Hcl Er | 85 | 38 |
| Levothyroxine Sodiumbrand: Synthroid | 82 | 30 |
| Dulaglutidebrand: Trulicity |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$336 across 15 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
- 2018-06-07
- Last updated
- 2025-02-25
- Certified
- 2025-02-25
Frequently asked questions
- What is Dannel Diaz Ruiz's NPI number?
- Dannel Diaz Ruiz's National Provider Identifier (NPI) is 1679066435, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dannel Diaz Ruiz's specialty?
- Dannel Diaz Ruiz is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Dannel Diaz Ruiz located?
- Dannel Diaz Ruiz's practice location on file with NPPES is 313 Calle Pirineo, Mayaguez,, PR 00680.
- What is Dannel Diaz Ruiz's phone number?
- The practice phone number listed in the NPPES registry for Dannel Diaz Ruiz is (787) 477-8410.
- Does Dannel Diaz Ruiz accept Medicare?
- Dannel Diaz Ruiz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dannel Diaz Ruiz's NPI active?
- Yes — Dannel Diaz Ruiz's NPI (1679066435) is active in the NPPES registry as of the last update on 2025-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.