Guadalupe Santiago
NPI 1558322826 · Internal Medicine Physician · Arecibo, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guadalupe Santiago is a Internal Medicine Physician provider in Arecibo, PR (NPI 1558322826).
Provider details
- NPI number
- 1558322826
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 207R00000X (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
20 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 · 92 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 359 | 70 |
| Losartan Potassium | 212 | 78 |
| Famotidine | 202 | 61 |
| Amlodipine Besylate | 186 | 67 |
| Levothyroxine Sodiumbrand: Synthroid | 159 | 33 |
| Simvastatin | 159 | 46 |
| Atorvastatin Calcium | 156 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$362 across 3 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
- 2006-03-28
- Last updated
- 2013-01-28
Frequently asked questions
- What is Guadalupe Santiago's NPI number?
- Guadalupe Santiago's National Provider Identifier (NPI) is 1558322826, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guadalupe Santiago's specialty?
- Guadalupe Santiago is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Guadalupe Santiago located?
- Guadalupe Santiago's practice location on file with NPPES is Num 50 Ave Trina Padilla De Sanz, Arecibo, PR 00612-4503.
- What is Guadalupe Santiago's phone number?
- The practice phone number listed in the NPPES registry for Guadalupe Santiago is (787) 879-3978.
- Does Guadalupe Santiago accept Medicare?
- Guadalupe Santiago is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guadalupe Santiago's NPI active?
- Yes — Guadalupe Santiago's NPI (1558322826) is active in the NPPES registry as of the last update on 2013-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.