Arnaldo Santiago Diaz, MD
NPI 1134895568 · General Practice Physician · Guayama, PR
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arnaldo Santiago Diaz, MD is a General Practice Physician provider in Guayama, PR (NPI 1134895568).
Provider details
- NPI number
- 1134895568
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 22475 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
4 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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levofloxacin | 99 | 97 |
| Prednisone | 74 | 72 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 62 | 61 |
| Furosemide | 57 | 52 |
| Pantoprazole Sodium | 33 | 33 |
| Ciprofloxacin Hcl | 30 | 30 |
| Atorvastatin Calcium | 26 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$250 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
- 2021-08-17
- Last updated
- 2021-08-17
- Certified
- 2021-07-23
Frequently asked questions
- What is Arnaldo Santiago Diaz's NPI number?
- Arnaldo Santiago Diaz's National Provider Identifier (NPI) is 1134895568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arnaldo Santiago Diaz's specialty?
- Arnaldo Santiago Diaz is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Arnaldo Santiago Diaz located?
- Arnaldo Santiago Diaz's practice location on file with NPPES is Urb. La Plata Calle Jade D-35, Guayama, PR 00736.
- What is Arnaldo Santiago Diaz's phone number?
- The practice phone number listed in the NPPES registry for Arnaldo Santiago Diaz is (787) 242-9876.
- Does Arnaldo Santiago Diaz accept Medicare?
- Arnaldo Santiago Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arnaldo Santiago Diaz's NPI active?
- Yes — Arnaldo Santiago Diaz's NPI (1134895568) is active in the NPPES registry as of the last update on 2021-08-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.